Table of contents

1. Introduction to Microbiology(0)
2. Disproving Spontaneous Generation(0)
3. Chemical Principles of Microbiology(0)
4. Water(0)
5. Molecules of Microbiology(0)
6. Cell Membrane & Transport(0)
7. Prokaryotic Cell Structures & Functions(0)
8. Eukaryotic Cell Structures & Functions(0)
9. Microscopes(0)
10. Dynamics of Microbial Growth(0)
11. Controlling Microbial Growth(0)
12. Microbial Metabolism(0)
13. Photosynthesis(0)
14. DNA Replication(0)
15. Central Dogma & Gene Regulation(0)
16. Microbial Genetics(0)
17. Biotechnology(0)
18. Viruses, Viroids, & Prions(0)
19. Innate Immunity(0)
20. Adaptive Immunity(0)
21. Principles of Disease(0)

12. Microbial Metabolism

Enzymes

12. Microbial Metabolism

Enzymes: Study with Video Lessons, Practice Problems & Examples

Enzymes Practice Problems

11 problems

1PRACTICE PROBLEM

Which enzyme is used by bacteria to acquire atmospheric nitrogen:

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2PRACTICE PROBLEM

Which enzyme catalyzes the dismutation of superoxide radicals into oxygen and hydrogen peroxide?

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3PRACTICE PROBLEM

To survive the presence of toxic superoxide radicals, the aerobic bacteria, facultative anaerobes, and aerotolerant anaerobes must synthesize which of the following enzymes?

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4PRACTICE PROBLEM

Suppose you want to evaluate the lactose metabolism capability of E. coli. To assess this, you experiment by inoculating E. coli into a flask containing lactose and allowing it to incubate for several hours. If the bacteria were able to metabolize the lactose successfully, what enzyme(s) might you expect to detect in the flask after the incubation period?

5PRACTICE PROBLEM

Suppose a particular bacterium has induced a widespread infection within the saltwater fish population. Based on the provided traits, identify the appropriate bacterial species.

I. Gram-positive

II. Rod-shaped

III. Non-acid fast

IV. Produces H₂S gas

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6PRACTICE PROBLEM

Catalase is an enzyme found in living cells, particularly in aerobic organisms such as bacteria, fungi, plants, and animals. It protects cells from damage caused by:

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7PRACTICE PROBLEM

Which of the following does not directly influence enzyme activity?

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8PRACTICE PROBLEM

Which statement accurately describes the function of ribozymes?

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9PRACTICE PROBLEM

During metabolic processes in the liver, alanine (an amino acid) transfers its amino group to alpha-ketoglutarate, forming pyruvate and glutamate as products. Which biochemical reaction describes this process?

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10PRACTICE PROBLEM

Which of the following enzymes is not directly involved in anabolic reactions that synthesize complex carbohydrates?

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11PRACTICE PROBLEM

Why are vitamins considered crucial for the metabolic processes of bacteria?