BCH 3023 – Fall 2008 Final Exam‚ 12/8/2008 Name: _________________________________ 1. The GTP analog‚ ‚-imidoguanosine 5’-triphosphate (Gpp(NH)p)‚ shown below‚ cannot be hydrolyzed between the and phosphates. Predict the effect of microinjection of Gpp(NH)p of G-protein coupled signaling. O N NH O O H N P OO O P OH OH OH O H N N NH2 - O P O- O H H a. Gpp(NH)p is a substrate for adenylate cyclase and‚ thus‚ will decrease the intracellular concentration of
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Chapter 1 - Which one of the following is not a role for bioremediation? Curing infectious diseases - All of the following are examples of new emerging infectious diseases except Chickenpox - Normal microbiota: Beneficial microbial inhabitants of the body - Golden Age of Microbiology: Rapid discovery of basic microbiology principles - Re-emerging diseases: Once controlled by preventative public health measures they are now on the rise - Prions: Resistant to the usual sterilization procedures
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how starch and cellulose are treated to allow them to be used by the yeast? One potential ethanol feedstock is starch. Starch molecules are made up of long chains of glucose molecules. Thus‚ starchy materials can also be fermented after breaking starch molecules into simple glucose molecules. Examples of starchy materials commonly used around the world for ethanol production include cereal grains‚ potato‚ sweet potato‚ and cassava. A great amount of ethanol fuel is currently produced by starch
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specific substrate acted on by Aldolase B is fructose-1-phosphate (F1P). This then is converted into DHAP and glyceraldehyde. Once the conversion is finished the product can enter the glycolysis cycle to from ATP or energy used for the body. “In normal cellular conditions‚ the primary enzymatic activity of aldolase B is to cleave fructose diphosphate (FDP).” (Roth‚ 2012) A5. Role of Aldolase B Aldolase B is the substance needed to breakdown fructose. Its specific role is to speed up the
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enzyme but are temporarily bound for the duration of the reaction and then move away once it is completed. One example of this is NAD‚ which transfers hydrogen away from one molecule to become reduced NADH+. This occurs in both aerobic and anaerobic respiration in animals‚ whilst also in the light dependant and light independent reactions in plants. Temperature effects enzyme activity. Increasing the heat gives molecules more kinetic energy so they move around faster. This means
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Definition/comparison questions Evolution / Selection Evolution is a slow continuous process of change that happens in plants and animals over a long period of time resulting in a change from simpler to more complex forms. This is the reason modern day plants and animals are different from those of past. The competition for resources will favour organisms with better adaptability and certain variations over others hence leading to change in the rate of occurrence of certain traits within that population
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The effect of nutrition on the activity of Artemia franciscana Intro: In most ecosystems‚ the availability of nutrition is the most limiting factor of population growth and activity (Fábregas‚ 1997). If there is a lack of food resources in a community or a lack of certain specific dietary requirements‚ then the physiology of that community and it’s fecundity should be noticeably affected. Nutrients like carbohydrates‚ proteins and fats are carried around the body‚ along with oxygen from the
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MDP10508 ENDOCRINE AND NUTRITION BIOCHEMISTRY ASSIGNMENT ANSWER ALL OF THE QUESTIONS BELOW. (70 marks) 1. Comment on the statement below: ‘Glycolysis and Gluconeogenesis are reciprocally regulated’ Reciprocally regulated means when one process takes place in a cell‚ the other process will essentially inactivated. This regulation ensures that either glycolysis or gluconeogenesis predominate as to prevent concurrent activity in two closely parallel pathways‚ where if both Glycolysis and Gluconeogenesis
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*Anion and Cation Part C: Which of the following statements is true of the bonds in a water molecule? *Oxygen holds electrons more tightly than hydrogen does‚ and the net charge is zero Part D: Which of the following statements is not true of most cellular redox reactions? *A hydrogen atom is transferred to the atom that loses an electron. Part E: What kind of bond is formed when lithium and fluorine combine to form lithium fluoride? *Ionic Part F: Gaseous hydrogen burns in the presence of oxygen to
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Enzymology‚ Catalytic Mechanism‚ Carbohydrate Metabolism‚ Adenosine Triphosphate Enzymes are proteins and their function is to act as catalysts to speed up certain chemical reactions in the cell that would be slower without them. This process occurs as steps in a cycle with separate reactions in each step. If there is a missing product the step in the cycle will be incomplete and the normal function of the organism cannot be accomplished causing negative effects on the organism. The biological
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