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

Which of the following is true of protein structure?

Peptide bonds are formed by hydrolysis.

Peptide bonds join the amine group on one amino acid with the R group of another amino acid.

Secondary protein structures are caused by hydrogen bonding between atoms of the peptide backbone.

Tertiary protein structure emerges when there is more than one polypeptide in a protein.

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Verified step by step guidance

Understand the basic structure of proteins, which are composed of amino acids linked together by peptide bonds. These bonds form between the carboxyl group of one amino acid and the amine group of another, releasing a molecule of water in a dehydration synthesis reaction.

Recognize that peptide bonds are not formed by hydrolysis. Hydrolysis is the process of breaking down molecules by adding water, which is the opposite of how peptide bonds are formed.

Identify that peptide bonds do not join the amine group of one amino acid with the R group of another. Instead, they connect the carboxyl group of one amino acid to the amine group of the next.

Learn about secondary protein structures, which are formed by hydrogen bonds between the atoms of the peptide backbone. These structures include alpha helices and beta-pleated sheets.

Clarify that tertiary protein structure refers to the overall three-dimensional shape of a single polypeptide chain, stabilized by various interactions, including hydrogen bonds, ionic bonds, and disulfide bridges. It does not require more than one polypeptide chain; that would be quaternary structure.