Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

5. Molecules of Microbiology

Functional Groups

Microbiology

5. Molecules of Microbiology

Functional Groups

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Multiple Choice

All of the following are examples of functional groups in biology except:
a) -CH₃.
b) -COOH.
c) -H₂O.
d) -NH₂.
e) -OH.

-CH₃

-COOH

-H₂O

-NH₂

-OH

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Verified step by step guidance

Understand what a functional group is: In biology, a functional group is a specific group of atoms within a molecule that is responsible for a characteristic of that compound. They are the reactive part of the molecule and determine the properties and reactions of the molecule.

Identify the common functional groups: Some common functional groups in biology include methyl (-CH3), carboxyl (-COOH), amino (-NH2), and hydroxyl (-OH). These groups are often involved in chemical reactions and are key to the structure and function of biological molecules.

Analyze each option: Go through each option provided in the problem and determine if it is a functional group. For example, -CH3 is a methyl group, -COOH is a carboxyl group, -NH2 is an amino group, and -OH is a hydroxyl group. These are all functional groups.

Consider the exception: The problem asks for the option that is not a functional group. -H2O is water, which is a molecule, not a functional group. It does not attach to other molecules to impart specific chemical properties.

Conclude with the correct answer: Based on the analysis, -H2O is the only option that is not a functional group, as it is a complete molecule rather than a reactive group of atoms within a larger molecule.