Textbook Question
Reactions involved in the light-independent reactions of photosynthesis constitute the _______.
a. Citric acid cycle
b. Entner-Doudoroff pathway
c. Calvin-Benson cycle
d. pentose phosphate pathway
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Ch. 5 - Microbial Metabolism
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 5, Problem 19
The glycolysis pathway is basically _______.
a. catabolic
b. amphibolic
c. anabolic
d. cyclical
Verified step by step guidance1
Understand the definitions of the terms: 'catabolic' refers to pathways that break down molecules to release energy; 'anabolic' refers to pathways that build complex molecules from simpler ones, usually requiring energy; 'amphibolic' pathways can function both in breaking down and synthesizing molecules; 'cyclical' pathways involve a series of reactions that regenerate the starting molecule.
Recall that glycolysis is the process where glucose, a six-carbon sugar, is broken down into two molecules of pyruvate, releasing energy in the form of ATP and NADH.
Since glycolysis involves breaking down glucose into smaller molecules and releasing energy, it fits the definition of a catabolic pathway.
Consider whether glycolysis also functions in biosynthesis (anabolic) or regenerates starting molecules (cyclical). Glycolysis primarily breaks down glucose and does not regenerate its starting molecule, so it is not cyclical or anabolic.
Conclude that the best description of glycolysis among the options is 'catabolic'.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Glycolysis Pathway
Glycolysis is a metabolic pathway that breaks down glucose into pyruvate, producing ATP and NADH. It occurs in the cytoplasm of cells and is the first step in cellular respiration, providing energy and intermediates for other pathways.
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Glycolysis
Catabolic Pathways
Catabolic pathways involve the breakdown of complex molecules into simpler ones, releasing energy stored in chemical bonds. Glycolysis is catabolic because it degrades glucose to extract energy for cellular use.
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Anabolic and Amphibolic Pathways
Anabolic pathways build complex molecules from simpler ones, consuming energy, while amphibolic pathways serve both catabolic and anabolic roles. Glycolysis is not anabolic or amphibolic because it primarily breaks down glucose rather than synthesizing molecules.
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Related Practice
Textbook Question
Which of the following statements about the Entner-Doudoroff pathway is false?
a. It is a series of reactions that synthesizes glucose.
b. Its products are sometimes used to determine the presence of Pseudomonas.
c. It is a pathway of chemical reactions that catabolizes glucose.
d. It is an alternative pathway to glycolysis.
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Textbook Question
Under ideal conditions, the complete aerobic oxidation of one molecule of glucose by a bacterium allows a net gain of how many ATP molecules?
a. 2
b. 4
c. 38
d. 0
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Textbook Question
A major difference between anaerobic respiration and anaerobic fermentation is _______.
a. in the use of oxygen
b. that the former requires breathing
c. that the latter uses organic molecules within the cell as final electron acceptors
d. that fermentation only produces alcohol
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