Why cannot gluconeogenesis and glycolysis be active at the same time? a. False! Gluconeogenesis starts in mitochondria, glycolysis in cytoplasm, so they can be active at the same time! b. True! Gluconeogenesis and Glycolysis use the same reversible enzyme, so these enzymes cannot support both reactions. c. False! Gluconeogensis uses bypasses, so that's why both pathways can be active at the same time. d. True! Gluconeogensis makes glucose, glycolysis breaks glucose. The purpose of both enzymes is clearly opposed. e. False! Gluconeogenesis is in the liver, glycolysis is not - it's in the muscle, so a different organ.

Why cannot gluconeogenesis and glycolysis be active at the same time? a. False! Gluconeogenesis starts in mitochondria, glycolysis in cytoplasm, so they can be active at the same time! b. True! Gluconeogenesis and Glycolysis use the same reversible enzyme, so these enzymes cannot support both reactions. c. False! Gluconeogensis uses bypasses, so that's why both pathways can be active at the same time. d. True! Gluconeogensis makes glucose, glycolysis breaks glucose. The purpose of both enzymes is clearly opposed. e. False! Gluconeogenesis is in the liver, glycolysis is not - it's in the muscle, so a different organ.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter7: Releasing Chemical Energy

Section: Chapter Questions

Problem 11SA

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a- Krebs cycle is the subsequent pathway of glycolysis. Although, pyruvate is the last product of glycolysis why the Krebs cycle does not initiate with pyruvate? b-Describe the roles of the NADH and FADH2 in glucose break down reactions.
Which of the following is FALSE about glycolysis? a. The pathway axidizes two moles of NADH to NAD* for each mole of glucose. b. The pathway requires two moles of ATP to get started catabolizing each mole of glucose. c. ADP is phosphorylated to ATP via substrate -level phosphorylation. d. The pattivay produces pyruvate as one of its products.
Which of the following statements is not true? (a) Glycolysis is the ﬁrst stage of cellular respiration. (b) Glycolysis can proceed under low oxygen levels with the assistance of fermentation. (c) Glycolysis produces less ATP than does either the Krebs cycle or oxidative phosphorylation. (d) Glycolysis produces most of the ATP required by aerobic organisms like us.
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
Which of the following statements is correct? a. Glycolysis and Krebs cycle produce ATP in substrate level phosphorylation b. Glycolysis and Krebs cycle produce ATP in oxidative level phosphorylation. c. Glycolysis and pyruvate oxidation produce ATP in substrate level phosphorylation. d. Glycolysis and pyruvate oxidation produce ATP in oxidative level phosphorylation.
Which of the following statements concerning the location of the metabolic pathways is correct? a. All reactions of the glycolysis take place in the mitochondria. b. All reactions of the TCA cycle take place in the mitochondria. c. Some reactions of the TCA cycle take place in the cytosol, and some in mitochondria. d. Some reactions of the glycolysis take place in the cytosol, and some in mitochondria.
the reaction catalyzed by glyceradehyde 3-phosphate dehydrigenase is based on NAD+ and a active site cysteine. Also another phosphate group is added. what is the reason for that? a) because one ATP is consumed b) an inorganic phosphate is activated for ATP synthesis C) NADH can be recycld and than converted back to NAD+ for glycolysis d) because one ATP is generated
Which of the following steps occurs during the payoff phase of glycolysis? A. the conversion of phosphoenolpyruvate to pyruvate B. the conversion of fructose 6-phosphate to fructose 1,6-biphosphate C. the conversion of glucose 6-phosphate to fructose 6-phosphate D. the conversion of glucose to glucose 6-phosphate
a) What is the process by which cells generate ATP through a series of redox (chemical) reactions called? How many ATPs generated through this process from one Glucose molecule? b) What does cellular respiration accomplish for the cell? c) What happens to the NADH produced in glycolysis? Why does it need to get into the mitochondria? d) Write the role of O2 in cellular respiration. e) What happens to our body’s enzyme activity during fever? f) What is the difference between apo-enzyme and holo-enzyme? g) What is meant by the term specificity in relation to enzyme activity? h) If humans evolved from apes, why are there still apes? i) What are the risk factors of type 2 diabetes? j) Why was Lamarck wrong about giraffes?
The energy investing phase of glycolysis produces 4 ATP and 2 NADH molecules. true or false?
In aerobic respiration when is carbon dioxide produced? (a) when oxygen is used as the final electron acceptor in oxidative phosphorylation (b) glycolysis (c) during substrate level phosphorylation (d) Krebs cycle (e) when hydrogen is pumped across the inner membrane of the mitochondria
Indicate what step each of the events in the glycolysis pathway the following takes place: a. First phosphorylation of ADP occurs b. First “energy-rich” compound is produced c. Second “ energy-rich” compound is produced d. Frist isomerization reaction occurs