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 can enter the nucleus to affect gene expression B) It can only be used to regenerate more ATP. C) It can be added to water and excreted as a liquid. D) It can be added to other molecules in order to activate them 30) Which of the following statements regarding enzymes is true? A) Enzymes decrease the free energy change of a reaction B) Enzymes increase the rate of a reaction C) Enzymes change the direction of chemical reactions. D) Enzymes are permanently altered by the reactions they catalyze. 31) The active site of an enzyme is the region that: A) binds allosteric regulators of the enzyme. B) binds the products of the catalytic reaction C) is involved in the catalytic reaction of the enzyme D) is inhibited by the presence of a coenzyme or a cofactor. 32) The ATP made during glycolysis is generated by A) electron transport. B) substrate-level phosphorylation C) chemiosmosis D) oxidation of NADH to NAD". 33) Which of the following produces the most ATP when glucose (CHO) is completely oxidized to carbon dioxide (CO) and water? A) glycolysis B) oxidation of pyruvate to acety CoA C) citric acid cycle D) oxidative phosphorylation (chemiosmosis)
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 can enter the nucleus to affect gene expression B) It can only be used to regenerate more ATP. C) It can be added to water and excreted as a liquid. D) It can be added to other molecules in order to activate them 30) Which of the following statements regarding enzymes is true? A) Enzymes decrease the free energy change of a reaction B) Enzymes increase the rate of a reaction C) Enzymes change the direction of chemical reactions. D) Enzymes are permanently altered by the reactions they catalyze. 31) The active site of an enzyme is the region that: A) binds allosteric regulators of the enzyme. B) binds the products of the catalytic reaction C) is involved in the catalytic reaction of the enzyme D) is inhibited by the presence of a coenzyme or a cofactor. 32) The ATP made during glycolysis is generated by A) electron transport. B) substrate-level phosphorylation C) chemiosmosis D) oxidation of NADH to NAD". 33) Which of the following produces the most ATP when glucose (CHO) is completely oxidized to carbon dioxide (CO) and water? A) glycolysis B) oxidation of pyruvate to acety CoA C) citric acid cycle D) oxidative phosphorylation (chemiosmosis)
Answer
28. Option A is correct.
In exergonic reactions reactants have more free energy than the
products hence reaction is accompanied with net release of energy.
Exergonic reactions don’t require any energy from the surroundings
and are spontaneous.
29. Option D is correct
Inorganic phosphate is sometimes transferred from the ATP to the
substrate molecules during various biochemical reactions in the
cell.
30. Option B is correct
Enzymes increase the rate of reaction by lowering the activation
energy.
31. Option C is correct
Active site is the region in enzyme which is involved in the
catalytic reaction of the enzyme.
32. Option B is correct
ATP generated during glycolysis is at the substrate level
phosphorylation.
33. Option D is correct
Oxidative phosphorylation generates the most ATP during aerobic
respiration through chemi-osmotic mechanism.
