Homework Answers
Ans a is correct.
Direct energy liberation at reaction step is called substrate level phosphorylation.
Here kinase is involved to remove phosphate from substrate and pass to ADP to form ATP and product with less energy.
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QUESTION 25 Which of the following are true about kinases? The products of the reactions they...
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...
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates....
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates. b) enzymes lower the activation energy for chemical reactions. c) enzymes change the K eq for chemical reactions. d) many enzymes change shape slightly when substrate binds. e) reactions occur at the "active site" of enzymes, where a precise 3D orientation of amino acids is an important feature of catalysis.
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form...
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form complexes with their substrates b. Enzymes lower the activation energy for chemical reactions c. Enzymes change the Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
8. In the preparatory phase, which steps of reactions need(s) ATP as a substrate? 9. Lists...
8. In the preparatory phase, which steps of reactions need(s) ATP as a substrate? 9. Lists all reactions including substrates, enzymes, products, and standard free energy change (AG') in the preparatory phase of glycolysis.
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
QUESTION 13 Which of the following statements is not true about glycolysis? Some reactions in Glycolysis...
QUESTION 13 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 products of glycolysis are 2 pyruvate molecules, 2 ATPs and 2 NADH ОООО QUESTION 3 ATP is known to be an allosteric inhibitor of an enzyme A. Therefore ATP most...
Choice - Chapter 6 - Question 3 Part A Which of the following is true for...
Choice - Chapter 6 - Question 3 Part A Which of the following is true for anabolic pathways? They consume energy to build polymers from monomers. They do not depend on enzymes. They are usually spontaneous chemical reactions. They release energy as they degrade polymers to monomers. Submit Request Answer rovide Feedback Part D What name is given to the reactants in an enzymatically catalyzed reaction? reactors substrate active sites products Submit Request Answer Part E As a result of...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The reaction is faster than the same reaction in the absence of the enzyme. The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. The reaction always goes in the direction toward chemical equilibrium. O A and B only. O A, B, and C.
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false?...
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false? A. The cytoskeleton is made up of three types of protein filaments. B. The cytoskeleton controls the location of organelles in eukaryotic cells. C. Covalent bonds between protein monomers hold together cytoskeletal filaments. D. The cytoskeleton of a cell can change in response to the environment. Reset Selection Question 2 of 8 2.0 Points Which of the following statements about the function of the...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not proteins Enzymes slow down the rate of chemical reactions. O An enzyme is very specific in terms of which substrates it can bind. O An enzyme is consumed by the catalytic process. Question 9 1 pts Which one of the following statements about energy is correct? O Entropy is the movement of molecules from areas of higher concentration to areas of lower concentration. O...
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...
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form complexes with their substrates b. Enzymes lower the activation energy for chemical reactions c. Enzymes change the Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
8. In the preparatory phase, which steps of reactions need(s) ATP as a substrate? 9. Lists all reactions including substrates, enzymes, products, and standard free energy change (AG') in the preparatory phase of glycolysis.
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
QUESTION 13 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 products of glycolysis are 2 pyruvate molecules, 2 ATPs and 2 NADH ОООО QUESTION 3 ATP is known to be an allosteric inhibitor of an enzyme A. Therefore ATP most...
Choice - Chapter 6 - Question 3 Part A Which of the following is true for anabolic pathways? They consume energy to build polymers from monomers. They do not depend on enzymes. They are usually spontaneous chemical reactions. They release energy as they degrade polymers to monomers. Submit Request Answer rovide Feedback Part D What name is given to the reactants in an enzymatically catalyzed reaction? reactors substrate active sites products Submit Request Answer Part E As a result of...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The reaction is faster than the same reaction in the absence of the enzyme. The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. The reaction always goes in the direction toward chemical equilibrium. O A and B only. O A, B, and C.
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not proteins Enzymes slow down the rate of chemical reactions. O An enzyme is very specific in terms of which substrates it can bind. O An enzyme is consumed by the catalytic process. Question 9 1 pts Which one of the following statements about energy is correct? O Entropy is the movement of molecules from areas of higher concentration to areas of lower concentration. O...
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