Homework Answers
13. The glycolysis uses NADH but not NADPH. Hence the correct answer is: some steps of glycolysis use NADPH as a source of energy.
3. Allosteric inhibition happens by the inhibitor binding to a site other than the active site on the enzyme. By doing this the Km and the Vmax of the enzyme decreases. Hence the correct answer is: decreases both Km and Vmax.
1. If there is no electron density delocalisation then the hydrolysis doesn't take place. Hence the correct answer is: no de localisation of the electron density.
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QUESTION 13 Which of the following statements is not true about glycolysis? Some reactions in Glycolysis...
QUESTION 17 Which of the following factors does not increase the Tm of DNA? Increase in...
QUESTION 17 Which of the following factors does not increase the Tm of DNA? Increase in stacking energy Increase in Absorbance Increase in % GC content Increase in salt concentration QUESTION 18 Which of the following statements is not true about glycolysis? Some reactions in Glycolysis use NADPH as a source of energy. The first step of glycolysis ensures that glucose is trapped inside the cell The Isomerization of DHAP to G3P makes the process of glycolysis efficient The end...
QUESTION 27 Which of the following statements is a true conclusion from the kinetics and equilibrium...
QUESTION 27 Which of the following statements is a true conclusion from the kinetics and equilibrium plots shown for two reaction (A and B) shown below? 100% Y х Х 0% Sec Sec A B In the given plots, Y is the reactant and X is the product Reaction B Involves a catalyst only in the forward direction Reaction A Involves a catalyst for the forward direction. Both reactions A and B are unimolecular reversible reactions QUESTION 28 Which of...
QUESTION 1 Which of the following processes/pathways CANNOT occur in the absence of O2? Oxidative phosphorylation...
QUESTION 1 Which of the following processes/pathways CANNOT occur in the absence of O2? Oxidative phosphorylation Substrate level phosphorylation Oxidation of NADH Photosynthesis Fermentation 1 points QUESTION 2 Phosphofructokinase (PFK-1) is one of the most regulated enzymes in metabolism. Which of the following would be expected to be an allosteric inhibitor of PFK-1? Glucose Fructose-6-phosphate Acetyl CoA AMP 1 points QUESTION 3 Which of the following is a reactant of the first reaction of glycolysis? Glucose ADP ATP...
8. The following molecules form during the stages of glycolysis: 1. pyruvate 2. NADH 3. Fructose-1,6...
8. The following molecules form during the stages of glycolysis: 1. pyruvate 2. NADH 3. Fructose-1,6 biphosphate glyceraldehyde-3-phosphate (G3P) 5. phosphoenol-pyruvate (PEP) In which order do they form? a. 3,2,5,4,1 b. 1, 2, 3, 4, 5 c. 5,4,3,2,1 d. 3, 4,2,5,1 9. What is true of the organic molecules that can be used in aerobic cellular respiration? Lipids and proteins can be used, but carbohydrates must be in the form of monosaccharides. b. Carbohydrates and lipids can be used, but...
6) Which photosystem works first during lincar electron flow and what product is made using the...
6) Which photosystem works first during lincar electron flow and what product is made using the energy absorbed by that photosystem? a) photosystem I (PSI), ATP b) PSI, NADPH c) PSII, ATP d) PSII, NADPH 7) Regulatory molecules can bind to an enzyme to modify its activity. Name the site of an enzyme to which an activator or noncompetitive inhibitor can bind. a) active site b) allosteric site 8) Where do the reactions of the Calvin cycle take place in...
QUESTION 4 Which of the following is NOT true regarding glycolysis O A. Glycolysis does not...
QUESTION 4 Which of the following is NOT true regarding glycolysis O A. Glycolysis does not require a membrane enclosed compartment. B. Glycolysis is regulated by negative feedback mechanisms. C. None of these statements are true D. All of these statements are true O E. Two molecules of ATP are consumed by glycolysis.
QUESTION 6 True or false: Anaerobic organisms cannot make ATP. True O False QUESTION 7 Which...
QUESTION 6 True or false: Anaerobic organisms cannot make ATP. True O False QUESTION 7 Which of the following is a reactant of the first reaction of glycolysis? O Glucose O ADP ОАТР O 02 O Both glucose and ATP QUESTION 8 Each of the following is a high-energy product of glycolysis. From which of these can anaerobic organisms harvest the stored energy? I.e. Which of these is/are useful to an anaerobe? ОАТР O NADH O Pyruvate O All of...
D Question 19 2 pts Which of the following statements best describes the primary role played...
D Question 19 2 pts Which of the following statements best describes the primary role played by oxygen in cellular respiration? It yields energy in the form of ATP as it is passed down the electron transport chain. It serves as an acceptor for carbon, forming CO2 in the citric acid cycle. It oxidizes glucose to form two molecules of pyruvate. It serves as the final acceptor for electrons from the electron transport chain. Question 20 2 pts Which of...
QUESTION 12 in which of the following ways does an allosteric Inhibitor affect the rate of...
QUESTION 12 in which of the following ways does an allosteric Inhibitor affect the rate of a reaction? It can increase Ks, and decrease kcat of the reaction. It can decrease Ks and decrease kcat of the reaction It can affect only kcat of the reation It can affect only ks of the reaction QUESTION 13 The number of high energy molecules generated at the end of pay off phase of glycolysis are 4 ATP and 2 NADH 4 ATP...
no explaination is needed 28) Which of the following is true for all exergonic reactions? A)...
no explaination is needed
28) Which of the following is true for all exergonic reactions? A) The reaction proceeds with a net release of free energy B) The products have more total energy than the reactants. C) A net input of energy from the surroundings is required for the reactions to proceed. D) The reactions are nonspontaneous 29) When ATP releases some energy, it also releases Inorganic phosphate. What purpose does this serve (if any) in the cell? A) It...
QUESTION 17 Which of the following factors does not increase the Tm of DNA? Increase in stacking energy Increase in Absorbance Increase in % GC content Increase in salt concentration QUESTION 18 Which of the following statements is not true about glycolysis? Some reactions in Glycolysis use NADPH as a source of energy. The first step of glycolysis ensures that glucose is trapped inside the cell The Isomerization of DHAP to G3P makes the process of glycolysis efficient The end...
QUESTION 27 Which of the following statements is a true conclusion from the kinetics and equilibrium plots shown for two reaction (A and B) shown below? 100% Y х Х 0% Sec Sec A B In the given plots, Y is the reactant and X is the product Reaction B Involves a catalyst only in the forward direction Reaction A Involves a catalyst for the forward direction. Both reactions A and B are unimolecular reversible reactions QUESTION 28 Which of...
8. The following molecules form during the stages of glycolysis: 1. pyruvate 2. NADH 3. Fructose-1,6 biphosphate glyceraldehyde-3-phosphate (G3P) 5. phosphoenol-pyruvate (PEP) In which order do they form? a. 3,2,5,4,1 b. 1, 2, 3, 4, 5 c. 5,4,3,2,1 d. 3, 4,2,5,1 9. What is true of the organic molecules that can be used in aerobic cellular respiration? Lipids and proteins can be used, but carbohydrates must be in the form of monosaccharides. b. Carbohydrates and lipids can be used, but...
6) Which photosystem works first during lincar electron flow and what product is made using the energy absorbed by that photosystem? a) photosystem I (PSI), ATP b) PSI, NADPH c) PSII, ATP d) PSII, NADPH 7) Regulatory molecules can bind to an enzyme to modify its activity. Name the site of an enzyme to which an activator or noncompetitive inhibitor can bind. a) active site b) allosteric site 8) Where do the reactions of the Calvin cycle take place in...
QUESTION 4 Which of the following is NOT true regarding glycolysis O A. Glycolysis does not require a membrane enclosed compartment. B. Glycolysis is regulated by negative feedback mechanisms. C. None of these statements are true D. All of these statements are true O E. Two molecules of ATP are consumed by glycolysis.
QUESTION 6 True or false: Anaerobic organisms cannot make ATP. True O False QUESTION 7 Which of the following is a reactant of the first reaction of glycolysis? O Glucose O ADP ОАТР O 02 O Both glucose and ATP QUESTION 8 Each of the following is a high-energy product of glycolysis. From which of these can anaerobic organisms harvest the stored energy? I.e. Which of these is/are useful to an anaerobe? ОАТР O NADH O Pyruvate O All of...
D Question 19 2 pts Which of the following statements best describes the primary role played by oxygen in cellular respiration? It yields energy in the form of ATP as it is passed down the electron transport chain. It serves as an acceptor for carbon, forming CO2 in the citric acid cycle. It oxidizes glucose to form two molecules of pyruvate. It serves as the final acceptor for electrons from the electron transport chain. Question 20 2 pts Which of...
QUESTION 12 in which of the following ways does an allosteric Inhibitor affect the rate of a reaction? It can increase Ks, and decrease kcat of the reaction. It can decrease Ks and decrease kcat of the reaction It can affect only kcat of the reation It can affect only ks of the reaction QUESTION 13 The number of high energy molecules generated at the end of pay off phase of glycolysis are 4 ATP and 2 NADH 4 ATP...
no explaination is needed
28) Which of the following is true for all exergonic reactions? A) The reaction proceeds with a net release of free energy B) The products have more total energy than the reactants. C) A net input of energy from the surroundings is required for the reactions to proceed. D) The reactions are nonspontaneous 29) When ATP releases some energy, it also releases Inorganic phosphate. What purpose does this serve (if any) in the cell? A) It...
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