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 Heart3h 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

Proteins

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Proteins

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Multiple Choice

Each amino acid has a central carbon atom that is attached to which four of the following groups?

Amino group, carboxyl group, hydrogen atom, and R group

Carboxyl group, hydroxyl group, hydrogen atom, and R group

Amino group, carboxyl group, hydroxyl group, and R group

Amino group, phosphate group, hydrogen atom, and R group

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Verified step by step guidance

Begin by understanding the basic structure of an amino acid. Each amino acid has a central carbon atom, known as the alpha carbon.

Identify the four groups that are attached to the alpha carbon. These are crucial for the structure and function of amino acids.

The first group is the amino group, which consists of a nitrogen atom bonded to hydrogen atoms. This group is essential for forming peptide bonds.

The second group is the carboxyl group, which contains a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group. This group is acidic and can donate a proton.

The third group is a hydrogen atom, which is a simple single hydrogen bonded to the alpha carbon. The fourth group is the R group, which varies among different amino acids and determines their unique properties.