Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Question
Chapter 6.3, Problem 3TYK
Summary Introduction
Introduction:
Glucose is a six-carbon monosaccharide that provides energy to the cells of the body. Atmospheric carbon dioxide is used by plants as a source of carbon during the process of photosynthesis to form glucose.
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Which of the following is the correct summary of phase II of glycolysis for each molecule of glucose?
Glucose + ATP ⟶ Glyceraldehy-3-phosphate + ADP
Glucose + 2 ATP ⟶ 2(Glyceraldehy-3-phosphate) + 2 ADP
Glyceraldehyde-3-phosphate + NAD+ + ADP + Pi ⟶ 3-phosphoglycerate + NADH + H+ + ATP
2(3-phosphoglycerate) + 2ADP ⟶ 2 pyruvate + 2ATP
2(Glyceraldehyde-3-phosphate) + 2NAD+ + 2ADP + 2Pi ⟶ 2(3-phosphoglycerate) + 2NADH + 2H+ + 2ATP
Which of the following enzymes is found in gluconeogenesis but not in glycolysis?
a. phosphohexose isomerase
b. hexokinase
c. fructose 1,6-bisphosphatase
d. phosphoglycerate kinase
Which of the following statements about glucose metabolism is correct?
A. Glucagon increases the rate of glycolysis
B. Glycolysis requires NADP+
C. In glycolysis, glucose is cleaved into two three-carbon product
D. The end-product of glycolysis in red blood cells is pyruvate
E. Glycogen is synthesized in the liver in response to insulin and exported to other tissues for use as a metabolic fuel
Chapter 6 Solutions
Principles of Biology
Ch. 6.1 - Which do you think has more entropy, an NaCl...Ch. 6.1 - Prob. 1TYKCh. 6.1 - Prob. 2TYKCh. 6.2 - Prob. 1CCCh. 6.2 - Prob. 2CCCh. 6.2 - Prob. 3CCCh. 6.2 - Prob. 1TYKCh. 6.2 - An inhibitor raises the Km for an enzyme but has...Ch. 6.3 - Prob. 1CCCh. 6.3 - Prob. 1TYK
Ch. 6.3 - Prob. 2TYKCh. 6.3 - Prob. 3TYKCh. 6.4 - Prob. 1CCCh. 6.4 - Prob. 1BCCh. 6.4 - Prob. 1TYKCh. 6.4 - Prob. 2TYKCh. 6.4 - Prob. 2CCCh. 6.5 - Prob. 1TYKCh. 6.6 - During the citric acid cycle, what happens to...Ch. 6.7 - Prob. 1CCCh. 6.7 - Prob. 2CCCh. 6.7 - Prob. 3CCCh. 6.7 - Prob. 1TYKCh. 6.7 - Prob. 2TYKCh. 6.7 - Prob. 3TYKCh. 6.8 - Prob. 1CCCh. 6.8 - Prob. 1TYKCh. 6 - According to the second law of thermodynamics....Ch. 6 - Reactions that release free energy are exergonic....Ch. 6 - Prob. 3TYCh. 6 - Prob. 4TYCh. 6 - Prob. 5TYCh. 6 - Prob. 6TYCh. 6 - Prob. 7TYCh. 6 - Prob. 8TYCh. 6 - Prob. 9TYCh. 6 - Prob. 10TYCh. 6 - Describe the mechanism and purpose of feedback...Ch. 6 - What causes the rotation of the y subunit of ATP...Ch. 6 - PRINCIPLES A principle of biology is that living...Ch. 6 - Discuss how life can maintain its order in spite...Ch. 6 - Prob. 2CBQ
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- Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is inhibited by· NIADH. Pyruvate dehydrogenase is inhibited by AΤΡ. Citrate synthase is inhibited by NADH. Succinyl-CoA activates citrate synthase. Acetyl-CoA activates pyruvate carboxylase.arrow_forwardIn which of the following metabolic conversions is ATP “generated” during glycolysis? Phosphoenolpyruvate -> pyruvate 2-Phosphoglycerate —> Phosphoenolpyruvate Glucose-6-phosphate —> Fructose-6-phosphate Fructose-1,6-bisphosphate —> Dihydroxyacetone phosphate + Glyceraldehyde-3-phosphate Fructose-6-phosphate —> Fructose-1,6-bisphosphatearrow_forwardiodoacetate is an irreversible inhibitor of glyceraldehyde-3-phosphate dehydrogenase. which of the following is the expected outcome of the exposure of a cell to iodoacetate - Cellular resiration will stop if the cell solely depends on glucose as fuel - The rate of cellular respiration will increase - The reoxidation of coenzymes will noy be affected , but the efficiency of oxidative phosphorylation will be diminished - There will be no effect on cellular respiration as long as the cell has a large glucose reserve -The cell sill not be able to reoxidize the reduced coenzymesarrow_forward
- During glycolysis, the major energy generating step involves: pyruvate kinase phosphoglycerate kinase Phosphofructokinase glyceraldehyde-3 -dehydrogenasearrow_forwardAfter glycolysis, the steps of aerobic respiration proceed from to to acetyl-CoA formation the citric acid cycle electron transfer phosphorylationarrow_forwardGlycolysis results in the production of two ________molecules from a single molecule of glucose. In theabsence of ________, the end product of glycolysis is________.a. acetyl CoA, pyruvate, lactateb. ATP, carbon, pyruvatec. pyruvate, oxygen, lactated. pyruvate, carbon, acetyl CoAarrow_forward
- Which of the following is the third step of glycolysis? Select one: a. Glucose is converted to Glucose-6-phosphate b. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate c. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate d. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate e. 3-phosphoglycerate is converted 2-phosphoglycerate f. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate g. Glucose-6-phosphate is converted to Fructose-6-phosphate h. 2-phosphoglycerate is converted to Phosphoenolpyruvate i. Phosphoenolpyruvate is converted to pyruvate j. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphatearrow_forwardWhat type of enzyme is responsible for initiating the process of glycolysis? Hydrolase. Dehydrogenase. Kinase. Phosphatase. Phosphorylase.arrow_forwardIn which of the following metabolic conversions is ATP “generated” during glycolysis? Glucose —> Glucose-6-phosphate 1,3-Bisphosphoglycerate —> 3-Phosphoglycerate Fructose-1,6-bisphosphate —> Dihydroxyacetone phosphate + Glyceraldehyde-3-phosphate Glucose-6-phosphate —> Fructose-6-phosphate 2-Phosphoglycerate —> 3-Phosphoglyceratearrow_forward
- Which statement regarding glycolysis is TRUE? Group of answer choices Both substrate-level phosphorylation reactions in glycolysis are irreversible. The oxidation reaction in glycolysis produces two high-energy molecules. There are four isomerization reactions in glycolysis. One inorganic phosphate is consumed as a substrate for each glucose molecule metabolized via glycolysis.arrow_forwardWhat glycolytic intermediate is fructose converted to in the muscle, such that it can be utilized in glycolysis? Glucose 6-phosphate Fructose 6-phosphate Glyceraldehyde 3-phosphate Dihydroxyacetone phosphatearrow_forwardCitric acid (or citrate) is an allosteric inhibitor of one of the first enzymes in glycolysis. How, in general, will it affect cellular respiration? Glycolysis will slow down when citric acid is abundant It will compete with glucose for the active site of the enzyme. It will stop the citric acid cycle when pyruvate is abundant. All of the abovearrow_forward
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