Which of the following is True?a. Enzymes increase activation energy requirements.b. Activation energy is required to initiate exergonic reactions.c. Heat cannot supply activation energy.d. Stomach acid inactivates pepsin.
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Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. c. Heat cannot supply activation energy. d. Stomach acid inactivates pepsin. |
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- As you change the temperature from a low temperature to a high temperature what happens to the rate of an enzymatic reaction, in general terms? A The reaction rate will steadily increase as the temperature increases. B The reaction rate will steadily decrease as the temperature increases. C The reaction rate will start low, then increase, and then decrease again as the temperature increases. D The reaction rate will not change as the temperature increases.Enzymes have similar responses to both changes in temperature and pH. The effect of both is on the a. rate of movement of the substrate molecules. b. strength of the chemical bonds within the substrate. c. three-dimensional shape of the enzyme. d. rate of movement of the enzyme.Which of the following is NOT a means of regulating enzyme activity? a. zymogen storage b. isoenzyme feedback c. enzyme induction d. allosteric control
- All of the following increase enzymatic activity except a. an increase in temperature. b. an increase in pH. c. an increase in concentration of the substrate. d. an increase in concentration of the enzyme that catalyzes the reaction.Which of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.Does physical exercise to increase muscle mass involve anabolic and/or catabolic processes? Give evidence for your answer.
- Beta oxidation is ______. a. the breakdown of sugars b. the assembly of sugars c. the breakdown of fatty acids d. the removal of amino groups from amino acidsWhat do the electrons added to NAD do? a. They become part of a fermentation pathway. b. They go to another pathway for ATP production. c. They energize the entry of the acetyl group into the citric acid cycle. d. They are converted into NADP.If you only had butter containing only lipids to eat, how would your body respond? A. It would use a different preparatory system than glycolysis before the citric acid cycle. B. It would rely on the large amount of glucose in the blood for your day's needs. C. It would use alcoholic fermentation. D. It would use lactic acid fermentation.
- Which of the following statements is/are FALSE about glycolysis? A. It is an anaerobic process. B. Some steps occur in cytosol, others in mitochondria. C. It is the conversion of glucose to lactate or ethanol. D. It is the 1st stage of glucose metabolism.a) How do enzymes catalyze (increase the rate of) reactions? b) What does it mean that enzymes are “substrate specific”? c) How are they usually nameWhich process produces the greatest supply of potential energy in the form of ATP? Select one: a. Hydrolysis b. Oxidative metabolism c. Rephosphorylation d. Non-oxidative rapid glycolysis