35) The source of energy that directly drives the synthesis of ATP during oxidat

Question

35) The source of energy that directly drives the synthesis of ATP during oxidative phosphorylation is a) The oxidation of NADH b) The oxidation of glucose c) The oxidation of pyruvate d) The proton motive force derived from the proton (H+) gradient e) The reduction of O2 36) Certain types of drugs act as ionophores, molecules that cause the mitochondrial membrane to become highly permeable to H', meaning that H's can cross the membrane without any restraints. How would such drugs affect the oxidative phosphorylation process? a) Movement of electrons down the electron transport chain would be inhibited b) ATP synthesis would be inhibited since protons could move in any direction across the membrane c) ATP synthesis would be uninhibited d) ATP synthesis would be stimulated e) None of the above could happen; there would be no effect 37) The net products of glycolysis are a) 6 CO2, 4 ATP and 2 NADH b) 2 pyruvate , 2 ATP, and 2 NADH c) 2 pyruvate, 4 ATP and 2 NADH d) 2 pyruvate, 2 GTP and 2 CO2 e) 2 CO2, 2 ATP and glucose Part 2: True/False Mark answer as (A) True or (B) False on scantron. (2 pts) 38) CO2 is a byproduct of yeast alcoholic fermentation that makes bread dough rise. 39) The loss of electrons from a molecule is called reduction 40) Fats can be broken down in the body to Acetyl CoA and will enter the Krebs cycle 41) NAD and NADP are coenzymes that act as electron carriers 42) The Calvin Cycle requires the input of equal amounts of ATP, NADPH and CO2 43) Photosynthesis only occurs in plants and no other organisms 44) The operation of an electron transport system during chemiosmosis is based on a series of redox reactions that move electrons from one molecule to the next 45) The yeast Saccharomyces cerevisiae is used in making wine because of its ability to switch from aerobic respiration in the presence of oxygen and to lactic acid fermentation in the absence of oxygen 46) A total of approximately 36 molecules of ATP will be produced by aerobic respiration, while no ATP will be produced by glycolysis followed by alcoholic fermentation 47) Rubisco is the enzyme responsible for carbon fixation in plants 48) Photosynthesis is divided into two main phases, the first of which is a series of reactions that 49) 50) Lactic acid is produced in the fermentation process used to make beer requires the absorption of photons. This phase is often referred to as the light reactions. Because plants harness energy in photosynthesis, they do not need to use cellular respiration

Explanation / Answer

35) The correct option is d. The proton motive force derived from the proton(H+) gradient.

The energy source, which drives ATP synthesis by ATP synthase during oxidative phosphorylation is the H+ concentration gradient.

36) The correct option is b. ATP synthesis would be inhibited since protons could move in any direction across the membrane.

Certain drugs act as ionophores, which cause the mitochondrial membrane to be highly permeable to H+. Drugs affect oxidative phosphoryolation by the inhibition of ATP synthesis.

37) The correct option is b. 2 pyruvate, 2 ATP and 2 NADH.

The net end products of glycolysis are 2 Pyruvate, 2 NADH and 2 ATP.

38) The given statement is true.

Alcoholic fermentation process carried by yeast in bread and produces CO2 gas. CO2 forms bubbles in the dough, which cause the dough.

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