Textbook Question
How do organisms control the rate of metabolic activities in their cells?
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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 3
For the phrase given below, indicate the type of metabolism referred to, using the following choices:
a. Anabolism only
b. Both anabolism and catabolism (amphibolic)
c. Catabolism only
Is exergonic
Verified step by step guidance1
Understand the definitions of the metabolism types: Anabolism refers to biosynthetic processes that build complex molecules from simpler ones and generally require energy input (endergonic). Catabolism refers to the breakdown of complex molecules into simpler ones, releasing energy (exergonic). Amphibolic pathways involve both anabolic and catabolic reactions.
Analyze the phrase 'Is exergonic' which means the process releases energy. Since catabolic reactions release energy, this phrase is describing a catabolic process.
Recall that anabolic processes are endergonic (require energy), so 'exergonic' cannot describe anabolism only.
Since the phrase does not indicate both building up and breaking down molecules, it does not describe an amphibolic pathway.
Conclude that the metabolism type referred to by 'Is exergonic' is catabolism only.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Catabolism
Catabolism refers to the metabolic pathways that break down molecules into smaller units, releasing energy in the process. These reactions are typically exergonic, meaning they release energy that the cell can use for various functions.
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Catabolic & Anabolic Pathways
Anabolism
Anabolism involves metabolic pathways that build complex molecules from simpler ones, requiring an input of energy. These reactions are endergonic, meaning they consume energy to synthesize cellular components like proteins and nucleic acids.
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Exergonic Reactions
Exergonic reactions release energy as they proceed, often driving cellular processes. In metabolism, catabolic pathways are usually exergonic, providing the energy needed for anabolic reactions and other cellular activities.
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Related Practice
Textbook Question
For the phrase given below, indicate the type of metabolism referred to, using the following choices:
a. Anabolism only
b. Both anabolism and catabolism (amphibolic)
c. Catabolism only
Is endergonic
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Textbook Question
_______ is a cyclic series of eight reactions involved in the catabolism of acetyl-CoA that yields eight molecules of NADH and two molecules of FADH2.
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Textbook Question
Examine the biosynthetic pathway for the production of the amino acids tryptophan, tyrosine, and phenylalanine in the figure. Where do the initial reactants (erythrose 4-phosphate and PEP) originate?
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Textbook Question
The initial catabolism of glucose occurs by glycolysis and/or the ________ and ________pathways.
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Textbook Question
How does a noncompetitive inhibitor at a single allosteric site affect a whole pathway of enzymatic reactions?
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