Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart2h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Functional Groups

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Functional Groups

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Multiple Choice

Which of the following functional groups is present in all amino acids?

—SH

—COH

—OH

—NH₂

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Verified step by step guidance

Understand that amino acids are the building blocks of proteins and have a general structure that includes a central carbon atom (alpha carbon) bonded to four different groups.

Identify the four groups attached to the central carbon in an amino acid: an amino group (—NH2), a carboxyl group (—COOH), a hydrogen atom, and a variable side chain (R group) that determines the specific properties of each amino acid.

Recognize that the amino group (—NH2) is a functional group present in all amino acids, which is essential for forming peptide bonds during protein synthesis.

Consider the other functional groups listed in the problem: —SH (sulfhydryl group), —COH (aldehyde group), and —OH (hydroxyl group). These are not present in all amino acids but may be found in specific side chains of certain amino acids.

Conclude that the amino group (—NH2) is the functional group common to all amino acids, as it is a fundamental part of their structure, allowing them to link together to form proteins.