1. Under what circumstances in the cell would the entire pentose phosphate pathway becarried out with intermediates then being recycled into only glycolysis?A. When the cell needs more NADPH than ribose.B. When the cell needs both NADPH and ribose.C. When the cell needs NADPH and ATP.D. When the cell has enough NADPH and ribose.

The pentose phosphate pathway is also called HMP shunt pathway. It branches from glucose 6-phosphate…

Answered: 1. Under what circumstances in the cell…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter7: Cellular Respiration: Harvesting Chemical Energy

Section: Chapter Questions

Problem 2TYK

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1. a) Describe what is happening in ATP Synthase in plain English! (how would you describe this step for someone who hasn’t taken Biol) b) If someone wanted to perform an experiment to evaluate the output of a particular step, which variable would be the best option to measure? (Think about which variable is UNIQUE to each step!)
2. How will the cell shift its metabolic processes in response to the level of pyruvate and in order to produce ATP? A. It will shift from aerobic respiration to fermentation B. It will shift from aerobic respiration to anaerobic respiration C. It will continue with aerobic metabolism using oxygen in the cytosol to make ATP D. It will shift from anaerobic respiration to fermentation
The reactions of _____ take place within the cytosol of eukaryotic cells. (a) glycolysis (b) oxidation of pyruvate (c) the citric acid cycle (d) chemiosmosis (e) the electron transport chain
Which of the following pathways requires molecular oxygen (O2)? a. aerobic respiration b. lactate formation c. alcoholic fermentation d. photosynthesis
Which of the following reaction pathways is not part of the second stage of aerobic respiration? a. electron transfer phosphorylation b. acetyl-CoA formation c. Krebs cycle d. glycolysis e. a and d
Glycolysis results in the production of two ________ molecules from a single molecule of glucose. In the absence of ________, the end product of glycolysis is ________. acetyl CoA, pyruvate, lactate ATP, carbon, pyruvate pyruvate, oxygen, lactate pyruvate, carbon, acetyl CoA
What is the final acceptor for electrons in cellular respiration? a. oxygen b. ATP c. carbon dioxide d. hydrogen e. water
1. List the 3 final products of glycolysis.
7. Why are electron carriers (NAD+/NADH and FAD/FADH2) so important in the process of cellular respiration? a) They deliver electrons to the ETC, which in turn sets up chemiosmosis, where most of the ATP is generated. b) They separate the electrons from the protons so that the protons can be moved out of the mitochondrion. c) NADH and FADH2 are major components of the ETC, so without them, there would be no ETC in the cell. d) The electrons that they carry are able to directly phosphorylate ADP in order to generate the bulk of ATP in the cell. e) They transport protons across the mitochondrial membrane.
The effect of high levels of ADP is to_inv_cellular respiration. a. increase the activity of specific enzymes b. decrease the activity of specific enzymes c. have no effect on the activity of specific enzymes d. slow down the pathway
1. What is the common metabolic pathway of these three nutrients? Explain the process involved. 2. Make a flow chart diagram of each step in Glycolysis. Identify the biochemical reactions in each step and its corresponding enzymes and coenzymes. 3. What metabolic products are formed from pyruvate in each case: a) anaerobic conditions in the body b) anaerobic conditions in yeast c) aerobic conditions
1. Compare cellular respiration and photosynthesis. Which processes or structures are used in both in order to generate ATP? Select all that applay A. Chemiosmosis B. Substrate level phosphorylation C. Splitting of water to generate electrons D. An electron transport chain E. ATP synthase

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