Free Essays on Religion In Public Schools

Religion In Public Schools In the past Religion was confined to the state now with religious freedom everything has changed or at least started to change. In order for religion to be in a private school now it is again trying to be in Public schools. People ask "why can't freedom to acknowledge god be enjoyed again by children in every schoolroom across this land?" In the past, a long time ago children always prayed before class started and before lunch. But things h ave changed, "in 1791 the separation of church and state" started. Although it was made clear about the separation of the two "as late as 1951 some twenty states permitted schools to begin the day by reading aloud a passage of the bible." Bu t that had to stop. People didn't have the same beliefs when it comes to religion, if a family absent even believe in god why should their child be forced to pray? On many different occasions questions similar to this one were brought up and complained about. That is what started it all real big. When complaining, arguing and fighting all started over the silent moment. In 1978 a few lawyers got together and considered a constitutional law. The original law said that public school teachers in gr ades 1-6 "shall announce that a period of silence, not to exceed one minute, shall be observed for meditation." This law did not work for long, because it still allowed oral prayer in public high schools. Later in 1981, the Alabama State Senator Donald G. Holmes successfully passed a bill that included all grades calling it "the moment of silence" this law said that "the teacher (was) to announce that the silent moment may be used for voluntary prayer." Although it would have to be si lent prayer. Even after this new law started the lawyers that were opposed to this were trying to say that students "do not have a right to pray in school" silently or otherwise because of growing impressions that affect their life. The si... Free Essays on Religion In Public Schools Free Essays on Religion In Public Schools Religion In Public Schools In the past Religion was confined to the state now with religious freedom everything has changed or at least started to change. In order for religion to be in a private school now it is again trying to be in Public schools. People ask "why can't freedom to acknowledge god be enjoyed again by children in every schoolroom across this land?" In the past, a long time ago children always prayed before class started and before lunch. But things h ave changed, "in 1791 the separation of church and state" started. Although it was made clear about the separation of the two "as late as 1951 some twenty states permitted schools to begin the day by reading aloud a passage of the bible." Bu t that had to stop. People didn't have the same beliefs when it comes to religion, if a family absent even believe in god why should their child be forced to pray? On many different occasions questions similar to this one were brought up and complained about. That is what started it all real big. When complaining, arguing and fighting all started over the silent moment. In 1978 a few lawyers got together and considered a constitutional law. The original law said that public school teachers in gr ades 1-6 "shall announce that a period of silence, not to exceed one minute, shall be observed for meditation." This law did not work for long, because it still allowed oral prayer in public high schools. Later in 1981, the Alabama State Senator Donald G. Holmes successfully passed a bill that included all grades calling it "the moment of silence" this law said that "the teacher (was) to announce that the silent moment may be used for voluntary prayer." Although it would have to be si lent prayer. Even after this new law started the lawyers that were opposed to this were trying to say that students "do not have a right to pray in school" silently or otherwise because of growing impressions that affect their life. The si...

Learn About Photosynthesis Formula

Learn About Photosynthesis Formula Some organisms need to create the energy they need to survive. These organisms are capable of absorbing energy from sunlight and using it to produce sugar and other organic compounds such as lipids and proteins. The sugars are then used to provide energy for the organism. This process, called photosynthesis, is used by photosynthetic organisms including plants, algae, and cyanobacteria. Photosynthesis Equation In photosynthesis, solar energy is converted to chemical energy. The chemical energy is stored in the form of glucose (sugar). Carbon dioxide, water, and sunlight are used to produce glucose, oxygen, and water. The chemical equation for this process is: 6CO2 12H2O light → C6H12O6 6O2 6H2O Six molecules of carbon dioxide (6CO2) and twelve molecules of water (12H2O) are consumed in the process, while glucose (C6H12O6), six molecules of oxygen (6O2), and six molecules of water (6H2O) are produced. This equation may be simplified as: 6CO2 6H2O light → C6H12O6 6O2. Photosynthesis in Plants In plants, photosynthesis occurs mainly within the leaves. Since photosynthesis requires carbon dioxide, water, and sunlight, all of these substances must be obtained by or transported to the leaves. Carbon dioxide is obtained through tiny pores in plant leaves called stomata. Oxygen is also released through the stomata. Water is obtained by the plant through the roots and delivered to the leaves through vascular plant tissue systems. Sunlight is absorbed by chlorophyll, a green pigment located in plant cell structures called chloroplasts. Chloroplasts are the sites of photosynthesis. Chloroplasts contain several structures, each having specific functions: Outer and inner membranes- protective coverings that keep chloroplast structures enclosed.Stroma- dense fluid within the chloroplast. The site of conversion of carbon dioxide to sugar.Thylakoid- flattened sac-like membrane structures. The site of conversion of light energy to chemical energy.Grana- densely layered stacks of thylakoid sacs. Sites of conversion of light energy to chemical energy.Chlorophyll- a green pigment within the chloroplast. Absorbs light energy. Stages of Photosynthesis Photosynthesis occurs in two stages. These stages are called the light reactions and the dark reactions. The light reactions take place in the presence of light. The dark reactions do not require direct light, however dark reactions in most plants occur during the day. Light reactions occur mostly in the thylakoid stacks of the grana. Here, sunlight is converted to chemical energy in the form of ATP (free energy containing molecule) and NADPH (high energy electron carrying molecule). Chlorophyll absorbs light energy and starts a chain of steps that result in the production of ATP, NADPH, and oxygen (through the splitting of water). Oxygen is released through the stomata. Both ATP and NADPH are used in the dark reactions to produce sugar. Dark reactions occur in the stroma. Carbon dioxide is converted to sugar using ATP and NADPH. This process is known as carbon fixation or the Calvin cycle. The Calvin cycle has three main stages: carbon fixation, reduction, and regeneration. In carbon fixation, carbon dioxide is combined with a 5-carbon sugar [ribulose1,5-biphosphate (RuBP)] creating a 6-carbon sugar. In the reduction stage, ATP and NADPH produced in the light reaction stage are used to convert the 6-carbon sugar into two molecules of a 3-carbon carbohydrate, glyceraldehyde 3-phosphate. Glyceraldehyde 3-phosphate is used to make glucose and fructose. These two molecules (glucose and fructose) combine to make sucrose or sugar. In the regeneration stage, some molecules of glyceraldehyde 3-phosphate are combined with ATP and are converted back into the 5-carbon sugar RuBP. With the cycle complete, RuBP is available to be combined with carbon dioxide to begin the cycle over again. Photosynthesis Summary In summary, photosynthesis is a process in which light energy is converted to chemical energy and used to produce organic compounds. In plants, photosynthesis typically occurs within the chloroplasts located in plant leaves. Photosynthesis consists of two stages, the light reactions, and the dark reactions. The light reactions convert light into energy (ATP and NADHP) and the dark reactions use the energy and carbon dioxide to produce sugar. For a review of photosynthesis, take the Photosynthesis Quiz.

Changing the Surname of Children Essay Example | Topics and Well Written Essays - 1000 words

Changing the Surname of Children - Essay Example Families believed that changing a child's surname is important to obtain proper financial support for the child from the father and as a confirmation to the child that he or she is genuinely and securely part of a family therefore can demand vested rights from his or her parents. Relevantly important is that in knowing the father of the child, it can help provide medical information which can help answer questions about the health of the child and his or her characteristics as he or she grows up. Proper medical information about a child is important so that she will be given the proper medical treatment in a hospital in cases she got sick or suffered a disease, or a clear explanation about the traits he or she possesses. An example of a disease or trait where medical information about the child is important is the sickle cell disease and the sickle cell trait. Under the British laws, changing the surname of a child should be in consonance with the provisions of the Children Act 1989 and the Family Law Reform Act 1987. These laws, particularly the Children Act, provide that in order to win this case, the Court should be persuaded that the change of surname is in the "best interest of the child", that is, for the welfare of the subject. Any person who may seek the change of a child's surname should seek a leave of Court is so doing. The persons who can seek the change of a child's surname are those having parental responsibility including the biological father. "Parental responsibility" shall mean all the rights, duties, powers, responsibilities and authority which by law a parent of a child have in relation to the child and his property (Children Act 1989, sec. 3, par. 1). In this case, since Mr. Smith was granted parental responsibility over his children, he has the right to ask the Court to change the surname of his children to his surna me. When confronted with a petition to change a child's surname, the Court is reminded that any delay in determining the questions is likely to prejudice the welfare of the child (Children Act 1989, sec. 1, par.2). In determining whether to grant the said petition, the Court should consider the following: a) the ascertainable wishes and feelings of the child concerned (considered in the light of his age and understanding); b) his physical, emotional, and educational needs; c) the likely effect on him of any change in his circumstances; d) his age, sex, background, and any characteristics of which the court considers relevant; e) any harm which he has suffered or is at risk of suffering; f) how capable each of his parents and any other person in relation to whom the court considers the question to be relevant is of meeting his needs; g) the range of powers available to the court under this Act in the proceedings in question. The Court should also consider the welfare report or contact reports of the parent involved. In the case of Mr. Smith's, considering the requirements set by law and of the evidences at hand of the petitioner, the petition of Mr. Smith to change the surname of his children should be granted by the court for the following reasons: 1) The result of the paternity test revealed that Mr. Smith is the father of the children. 2) Mr. Smith is in the better position to take care of the children. He can best provide for the needs of the children. Contact

EliteClean International Logistics Strategies Essay

EliteClean International Logistics Strategies - Essay Example These techniques are used to detect areas of non-value adding processes otherwise defined as waste so that the necessary steps can be taken to eliminate them. One of these techniques is value stream mapping. Value stream mapping According to Mangier (2003) value stream mapping is a technique of creating a â€Å"one-page picture† of all the processes that take place in a company. This is the process from the time a customer places an order for a product until the customer has received the product at their location. The aim of value stream mapping is to illustrate the flow of material and information across and throughout all the processes that add value from the stage of production to shipment to the customer. Value stream maps documents both value-adding and non-value-adding processes from production to shipment. In creating the value stream map business and manufacturing waste can be easily identified and thus becomes the basis on which improvements can be made to the company ’s operations. Mangier (2003) indicates that there are four steps involved in value stream mapping. They are i. Defining the product or product family; ii. Creating the â€Å"current state† value stream mapping (CSV); iii. ...   The dishwasher line is manufactured in South Korea; the laundry product line in China; and the range cookers in Thailand. The value stream map for EliteClean is shown below. Figure 1 – Current State Value Stream Map In Figure 1 above a number of activities leading to the production of items are duplicated. There are several persons carrying out procurement activities. Instead of the head office obtaining information on materials required for production, the factories are allowed to do their own procurement. This procurement is carried out by the factory manager in the case of laundry and the chief production engineer who may delegate it to a production manager at the other factories. There are several trucks of raw material going to the three different factories. Some of these trucks carry similar items which are purchased separately by the three different factories. Elite Clean has employed a push-based supply chain strategy. The factories which are located in South Korea , China and Thailand produce items without any knowledge of demand and ship them to the regional distribution centers (RDCs). These distribution centers are located in Birmingham in the UK, Jordan in the Middle East and Chicago in the USA. There is a capacity problem at the RDCs due to the fact that there are too many inventory items in stores. There is some concern that some of these items may become obsolete. There is a cost involved in holding inventory. Additionally, when the storage facilities are too packed there will be a problem moving out inventory on a first-in-first-out basis. Items are not transported to the distribution centers based on demand.

Owens Dulce et Decorum Est Essay Example for Free

Owens Dulce et Decorum Est Essay Writing in a similar style to Owens Dulce et Decorum Est, Siegfried Sassoon also decided to attack figures of authority and those with no direct experience of trench warfare via Base Details. Base Details is entirely speculative. The word base in the title has two distinct meanings. It could be used as a noun, to mean place, as in a centre of operation; or you could interpret the word as an adjective meaning morally low or unacceptable. Sassoon has used play on words in the title so that the reader may more adequately perceive the irony and sarcasm expressed in this poem. The adjectives used in the first two lines of Base Details reflect the authors perception of his superiors: If I were fierce, and bald, and short of breath, Id live with Scarlet Majors at the Base, The first line indicates that Sassoon is contemptuous of these officers. He has classed the Majors as unpleasant stereotypes, to be criticised and jeered at. In the following line, the word scarlet has a double meaning. On face value, it could be taken to mean that the officers have bright red cheeks. However, Sassoon has used the word as a metaphor, meaning that the Majors have been metaphorically splattered with the blood of the young men they had sent to the front line to die. The stanza continues: And speed glum heroes up the line to death. Here, speed indicates haste. The Majors are unnecessarily rushing soldiers to their deaths. The soldiers are referred to as glum heroes because that is exactly what they are. Their country is expecting them to be noble, intrepid and courageous. Instead they are despondent because they know that as soon as they are out of the trenches their grisly demise could come about at any second. All the hope, joy and energy that is a part of youth has vanished from these men. Sassoon then regales us with further speculation thus: Youd see me with my puffy petulant face Guzzling and gulping in the best hotel, The first thing we notice about these two lines is that Sassoon has used alliteration in order to make more of an impact on the reader, and to vary his writing style. Also worth noting is the fact that Sassoon uses rhyme throughout Base Details to good and memorable effect. Saying that the Majors are puffy and petulant indicates incredulity on Sassoons part, similar to that conveyed in the first lines of the poem. The phrase guzzling and gulping indicates greed, and animal-like actions. The Majors are inhuman. Then, we are told that the Majors stay in the best hotel. This brings home the stark contrast between the lives of the soldiers in the vermin-infested trenches, and the sedentary lives of their superiors. Sassoon continues: Reading the Roll of Honour. Poor young chap, Id say. I used to know his father well: Yes, weve lost heavily in this last scrap. The Roll of Honour referred to here was an official list of those who died in the war. The Majors words regarding one of the deceased are not at all heartfelt. They are meaningless, detached and emotionally void. He is unconcerned and he has placed himself above feelings of pity for those lost and their families. Each new death is just another name on the register and another letter to be dispatched. In the last line of the stanza, the Major refers to trench warfare as a scrap or game, which is identical to Jessie Popes view of war. This is a direct reflection of how little the Major knows about the fighting going on outside his quarters; and similarly, how unequipped he is for his job of directing troops. Base Details closes with the following: And when the war is done and youth stone dead, Id toddle safely home and die in bed. By using the words stone dead to describe the deceased soldiers, Sassoon makes a brutal and graphic impression on the reader. It is a cold and unfeeling phrase, and seems to render those who died as useless and unimportant. The Major wishes to die peacefully, and in bed unlike those he sends out to the front. The Major considers himself superior in all aspects, even in death. Base Details attempted to show the ignorant public back in Britain the hypocritical attitudes of many of these Majors; and how soldiers in the trenches were being treated in comparison to those who had obtained top jobs merely on the basis of their public schooling. Whilst Base Details depicts the life of a typical Major serving during World War One, another of Sassoons poems, The Hero, depicts the sequence of events on the home front following the death of a soldier. The poem Base Details by Siegfried Sassoon is a sarcastic attack against the army generals who view the war as a game similar to checkers. It is therefore evidence of why Siegfried Sassoon is known as the voice of protest. The first noticeable thing about the text is the title. The word base is a pun for the fact that base means headquarters as well as dishonourable or cowardly, which implies that he will talk about the dishonourable activities at the Army headquarters. Secondly, Sassoon appeared to have blamed the officers for the purposeless deaths of his fellow men, while they were behind the front line and had no idea what it was like. Sassoon uses many adjectives to describe his generalisation of those at the top fat and bald and short of breath which shows the hatred that he has. In this poem, Sassoon writes poor young chapI used to know his father well. This statement alone is typical of an army general. To show the fact that army generals can not comprehend what war is like he uses the phrase we lost heavily in this last scrap. The army generals are calling this a scrap like its a fight between boys at school. Sassoon calls the army generals Finally, Sassoon rounds the poem of with a phrase by reinforcing that they are unfit and fat. He also shows that those at the front line could die any moment by saying When the war is done and youth stone dead, Id toddle safely home and die, in bed which is a good ending because it says that the generals will die in a nice warm peaceful place, while the soldiers will die among the rats. Sassoons feelings towards the officers are best described in the poem Base Details. In this poem, Sassoon shows his resentment towards the officers by describing them drinking in the best hotels, and reading the names of those who died, saying poor young chap I used to know his father well and saying yes, weve lost heavily in this last scrap. The poem is finished with the lines and when the war is done and youth stone dead, Id toddle safely home and die in bed This poem truly shows the bitterness and resentment Sassoon felt towards the officers. He felt that they didnt really care about those who died, because they were safe themselves and had no idea of what was going on at the front line calling the battle that was fought a scrap, like it was nothing more than a small fight. In the last two lines of the poem, Sassoons feelings are clearer than ever, the way he says that theyll toddle home and then die in bed shows that he thought that the officers were safe and living comfortably while the soldiers, who were actually fighting the war, were living in shocking conditions, where they would die at any moment. Sassoon uses many different ways to convey his feelings, and particularly his bitterness and resentment towards the war and the officers, but in all his poems, his true meanings are clear and he writes in such a way that shows us clearly what he thinks and feels about the war. BASE DETAILS ESSAY In the poem, Base Details, SiegFried Sassoon expresses his great disgust towards the majors in the military. He is horrified and appalled at the way the majors act while men are dying out in the battle field. Mr. Sassoon is so furious towards the majors that it takes more than just one word to describe how indignified Sassoon is. These great feelings of anger are derived from the fact that the majors are living a life of luxury while sending young men up the line out into the battle field. This is all suggested in the title of the poem with the word base suggesting a military base, and/or a base person. And the word details suggesting a command, an assignment, and something or someone lowly. Base Details is a poem which expresses the feelings of the author towards military majors using differentiable types of imagery. The poem begins by Sassoon describing the majors as demanding, mean, and belligerent men. Bald, out-of-shape and full of gluttony. Sassoon categorizes the majors under the word scarlet signifying childless, bright redness from excessive drinking and yelling of anger. Sassoon presents to us the fact of the majors sending up the young men as soon as they are drafted up the line to death. This attitude taken from the majors is what angers Sassoon to the point of hatred. To convince the reader of such horrific truth, Sassoon describes how disrespectful the majors are with their puffy petulant faces from eating and drinking excessively. Sassoon states how the majors are stuffing their faces and Reading the Roll of Honor in safe luxurious hotels while men are dying out on the field

Free Essays on Kafkas Metamorphosis: A Response to Kafka :: Metamorphosis essays

   Gregor had alienated himself long before his metamorphosis into a beetle. His obsession with his job had dehumanized him, made him less personal and more mechanical. While on business trips, he began to lock his doors at night in the hotels. He carried this action back to his homelife. His family did not know him anymore partially because they took him for granted for making their money for them and partially because that was simply how he wanted in to be. Gregor's metamorphosis into a beetle only allowed his family and himself to consciously alienate him from society and the world.    As someone said to meI can't remember who it was-it is really remarkable that when you wake up in the morning you nearly always find everything in exactly the same place as the night before. For when asleep and dreaming you are, apparently at least, in as essentially different state from that of wakefulness; and therefore, as that man truly said, it requires enormous, presence of mind or rather quickness of wit, when opening your eyes to seize hold as it were of everything in the room at exactly the same place where you had let it go on the previous evening. That was why, he said, the moment of waking up was the riskiest moment of the say. Once that was well over without deflecting you from your orbit, you could take heart of grace for the rest of your day.    Gregor woke up one morning to find himself turned from a human being to a beetle. People found that to be extremely hard to grasp. Many felt as though Gregor should have been more shocked at this change, or at least less understanding towards it. But really, why should he? The only part about being a beetle that seemed to truly negatively shock Gregor was that he could no longer attend to his job at the office. Gregor's family life did not change drastically. His loss of relation with his family was nothing very new, there was a lacking of personal connection with his parents for quite awhile before hand. His parents treated him as a form of hired help since he had taken the job to pay for his

Microbiology Study Guide Unit 2

Define metabolism: The sum of all biological chemical reactions inside a cell or organism Differences in catabolism and anabolism: Catabolism is an enzyme-regulated chemical reaction that releases energy. Complex organic compounds such as glucose, amino acids, glycerol and fatty acids are broken down into simpler ones. The energy of catabolic reactions is used to drive the anabolic reactions. Anabolism is also enzyme regulated but requires energy for taking the simpler broken down components from the catabolism phase and building them into complex molecules such as starch, proteins and lipids What is the role of ATP?ATP is the driving force for catabolic and anabolic reactions. ATP stores energy that is produced from the catabolic reactions which is later released to drive the anabolic reaction and other cellular work. ATP is stored energy in cells (phosphate groups held together by high energy reacting bonds) ATP is required for synthesis and some of the energy is given off as heat What are enzymes and their components? Enzymes are biological catalysts (substances that speed up a chemical reaction without themselves being permanently altered) Components:Apoenzyme is the protein portion of an enzyme. Inactive by themselves, must be activated by cofactors Cofactor- non protein portion (IE: ions of iron, zinc, magnesium and calcium) ****If the cofactor is an organic molecule, it is called a coenzyme Holoenzyme- The apoenzyme+cofactor forms the holoenzyme. It is the active enzyme. If you remove the cofactor, the apoenzyme will not function. **Cofactors may assist the enzyme by accepting atoms removed from the substrate or by donating atoms required by the substrate. Substrate=the specific substance that an enzyme will act on) **The crucial function of enzymes is to speed up biochemical reactions at temperatures that are compatible with the normal functioning of the cell. What are metabolic pathways? The sequence of enzyme catalyzed chemical reactions within a cell . What is the Kreb’s cycle? A pathway that converts two-carbon compounds to CO2, transferring electrons to NAD+ and other carriers; also called tricarboxylic acid (TCA) cycle or citric acid cycle A series of biochemical reactions in which a large amount of potential chemical energy stored in acetyl CoA is released step by step.In the cycle, a series of oxidations and reductions transfer that potential energy in the form of electrons to electron carrier coenzymes (mostly NAD+). The pyruvic acid derivatives are oxidized and the coenzymes are produced. Kreb’s cycle is for lipid catabolism. Glycerol is converted into dihydroxyacetone phosphate (DHAP) and catabolized via glycolysis and the Kreb’s cycle. Fatty acids undergo beta-oxidation, in which carbon fragments are spit off two at a time to form acetyl CoA which is catabolized by Kreb’s cycle.What is glycolysis? **Glycolysis creates to ATP molecules The main pathway for oxidation of glucose to pyruvic acid: Glycolysis is usually the first stage in carbohydrate catabolism. This occurs from the oxidation of glucose to pyruvic acid. Most microorganisms use this pathway and it occurs in most living cells. The term â€Å"glycolysis† means the splitting of sugar. The sugars are oxidized, release energy and then their atoms are rearranged to form 2 molecules of pyruvic acid. **Glycolysis does not require oxygen!Explanation of cellular respiration: Cellular respiration takes place after the glucose is broken down in pyruvic acid which is then channeled into the next step of either fermentation or cellular respiration. Cellular respiration is defined as the ATP-generating process in which most molecules are oxidized and the final electron acceptor is (almost always) an inorganic molecule. **operates via an electron transport chain * Aerobic respiration the final electron acceptor is O2 Anaerobic respiration the final electron acceptor is an inorganic molecule other than O2 What is an el ectron transport chain and why is it important? It is a system in which electrons pass through a series of different electron carriers to molecules or oxygen or other oxidized inorganic and organic molecules. The process occurs in the plasma membrane of the prokaryotes and in the mitochondrial membrane of eukaryotes. What is microbial growth? It is the growth in numbers of populations or an increase in the number of cellsWhat are three physical requirements of microbial growth? PH, temperature and moisture Define psychotrophs: Are cold loving microbes, will usually be found growing in the refrigerator such as listeria (20-25oC) How does PH affect growth? Certain bacteria thrive in a specific PH environment. Acidophiles like a PH of 5. 4 or below whereas Neutrophiles (most human pathogens) prefer a more neutral environment (5. 5-7. 5 PH) Define halophiles: Extreme halophiles (obligate halophiles) are microbes that require a high salt concentration that is required for growth.Facculta tive halophiles (most common) are microbes that do not require high salt concentrations for growth but can tolerate high salt solutions. How does osmotic pressure effect microbial growth? Microorganisms obtain most of all their nutrients in solutions surrounding water; therefore water is required for growth. They are composed of 80-90% water. High osmotic pressures have the effect of removing vital water from a cell. If a microbe is in a solution in which the concentration of solutes is higher than in the cell, the microbe is in a hypertonic environment which will create pressure on the cell.It will crush the cell causing the cells water to push out through the plasma membrane into the high solute concentration. What are some chemical requirements for microbes? Carbon- one of the most important for microbes next to water because it is the structural backbone Nitrogen- it is required for protein synthesis (requires some sulfur), also needed for DNA or RNA synthesis (needs some phosph orous) Vitamins and minerals- needed for essential function of enzymes, usually as co-factors. What are some organic growth factors?Essential organic compounds an organism is unable to synthesize are known as organic growth factors. They must be directly obtained by the environment. One group of organic growth factors is vitamins for human. What is a media? A media is a nutrient prepared for the growth of microorganisms. In the lab we use nutrient broths and nutrient agars. What are canophiles? Canophiles (aerobic bacteria) are microbes that grow better at high CO2 concentrations. Low oxygen high CO2 conditions resemble those found in the intestinal tract, digestive tract and other body tissues where pathogens grow.Why is a selective media desireable? Because a selective media will suppress the growth of unwanted bacteria while encouraging the growth of the desired microbes. How do prokaryotes reproduce? Reproduce by binary fission (most common) while others may go through a â€Å" budding† process 2 Categories used to control microbes (physical and chemical) Physical: Heat (dry heat such as flame or in hot ovens) heat will denature the protein causing the proteins shape to change making it no longer usable by the organism.Or (moist heat) such as with an autoclave which will force steam inside of the organism very quickly and cause it to break down Chemical: surfactants such as soaps which will work as a binding agen to the microorganism causing it to break off and be rinsed off or phenols which will disrupt the cell membrane or denature the protein therefore disrupting protein synthesis What are physical methods to control microbes? * Heat (dry and moist heat) * Cold * Radiation * Membrane filtration * Drying * Osmotic pressure What are the most common and effective ways of controlling microbes?An autoclave machine that utilizes heat, steam and pressure to kill microbes and their endospores in about 15 minutes (prions are not killed) Is it more effectiv e to control or kill microbes? It is more effective to control the microbes because we can study live bacteria, but not if they are dead Why would we want to control microbial growth? Controlling microbes can prevent infections and food spoilage Compare and contrast chromosomes in prokaryotes and eukaryotes: Prokaryotes have 1 chromosome (only one allele)Eukaryotes have 2 chromosomes (2 alleles) DNA is not always the genetic material. What are the exceptions? How could mutations give rise to new alleles of a gene? How does translation differ from transcription? Transcription in the synthesis of a complementary strand of RNA from a DNA template Translation is the protein synthesis that involves decoding of nucleic acid and converting the information into the language of the proteins What are the differences between the leading and lagging strand?Leading strand gets replicated sequentially and gets filled first. The lagging is the strand that gets replicated sporadically based off of what is left. What are three types of RNA and what do they do? Messenger RNA (mRNA): carries genetic information from the nucleus to the cytoplasm. Transfer RNA (tRNA): transfers the necessary sequence by carrying the code. Ribosomal RNA (rRNA): helps in synthesis of proteins. Explain mutations: A mutation is the change in the base sequence of DNA. Some mutations are bad such as when the gene for an enzyme mutates.The enzyme encoded by the gene may become inactive or less active because its amino acid sequence has changed. But a mutation can also be beneficial such as when an altered enzyme encoded by the mutant gene suddenly has new or enhanced activity that will benefit the cell. List and discuss common mutagens: Define genetic engineering: Manufacturing and manipulating genetic material in vitro also called recombinant DNA (rDNA ) What is recombinant DNA? A DNA molecule produced by combining DNA from two different sources. Exchange of genes between two DNA molecules) **Contribute s to a populations genetic diversity (source of variation in evolution) What are three processes involved in making recombinant DNA? Transformation in Bacteria Conjugation in bacteria Transduction in bacteria What is a restriction enzyme? An enzyme that cuts double stranded DNA at specific sites between nucleotides Pg. 249 What is conjugation? The transfer of genetic material from one to another involving cell to cell contact What is a plasmid? A small circular DNA molecule that replicates independently of the chromosome