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
Includes metabolism
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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 8
Complete the following chart:
The main coenzymes that carry electrons in catabolic pathways are _______ and ________.
Verified step by step guidance1
Step 1: Understand the enzyme categories and their functions. The chart lists enzyme categories such as Isomerase, Ligase/polymerase, and Lyase, with some descriptions missing. Begin by recalling the general functions of these enzymes: Isomerases rearrange molecules, Ligases/polymerases join molecules, and Lyases add or remove groups without hydrolysis.
Step 2: Fill in the missing descriptions based on enzyme functions. For example, Isomerases catalyze the rearrangement of atoms within a molecule, so the description could be 'Rearranges atoms within a molecule to form isomers.' Ligases/polymerases catalyze the joining of two molecules, often using ATP, so the description could be 'Joins two molecules together, often requiring energy from ATP.'
Step 3: Identify the enzyme that 'catabolizes substrate by adding water.' This description corresponds to Hydrolases, which catalyze hydrolysis reactions. This category should be added to the chart with the description 'Catabolizes substrate by adding water.'
Step 4: Recognize that the main coenzymes carrying electrons in catabolic pathways are NAD+ (nicotinamide adenine dinucleotide) and FAD (flavin adenine dinucleotide). These coenzymes accept electrons during oxidation reactions and are essential in energy metabolism.
Step 5: Complete the sentence by filling in the blanks with the names of these coenzymes: 'The main coenzymes that carry electrons in catabolic pathways are NAD+ and FAD.' This completes the understanding of electron carriers in catabolic reactions.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Coenzymes in Electron Transport
Coenzymes such as NAD+ (nicotinamide adenine dinucleotide) and FAD (flavin adenine dinucleotide) play crucial roles in catabolic pathways by carrying electrons from substrates to the electron transport chain. These molecules accept electrons during oxidation reactions, becoming reduced to NADH and FADH2, which then donate electrons to generate ATP.
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Electron Transport Chain
Categories of Enzymes
Enzymes are classified based on the reactions they catalyze. For example, hydrolases add water to break bonds, isomerases rearrange molecules, ligases join molecules, and lyases add or remove groups without hydrolysis. Understanding these categories helps identify enzyme functions in metabolic pathways.
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Catabolic Pathways and Electron Transfer
Catabolic pathways break down molecules to release energy, often transferring electrons to coenzymes. This electron transfer is essential for cellular respiration, where energy from electrons is used to produce ATP. Recognizing how electrons move through these pathways clarifies the role of coenzymes and enzymes.
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Related Practice
Textbook Question
How does oxidation of a molecule occur without oxygen?
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Textbook Question
List at least four groups of microorganisms that are photosynthetic.
Textbook Question
Anaerobic respiration typically uses (organic/inorganic)________ molecules as final electron acceptors.
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Textbook Question
Redox reactions ______.
a. Transfer energy
b. Transfer electrons
c. Involve oxidation and reduction
d. Are involved in all of the above
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Textbook Question
A reduced molecule ______.
a. Has gained electrons
b. Has become more positive in charge
c. Has lost electrons
d. Is an electron donor
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