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

What are the four levels of protein structure?

Primary, secondary, tertiary, and pentary

Primary, secondary, tertiary, and quaternary

Primary, secondary, tertiary, and hexary

Primary, secondary, tertiary, and quinary

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Verified step by step guidance

Begin by understanding that proteins are complex molecules essential for various biological functions, and their structure is crucial for their function.

The primary structure of a protein is the sequence of amino acids in a polypeptide chain. This sequence is determined by the genetic code and is linked by peptide bonds.

The secondary structure refers to the local folding of the polypeptide chain into structures such as alpha-helices and beta-pleated sheets, stabilized by hydrogen bonds.

The tertiary structure is the overall three-dimensional shape of a single polypeptide chain, formed by interactions between the side chains of the amino acids, including hydrogen bonds, ionic bonds, and hydrophobic interactions.

The quaternary structure is the arrangement of multiple polypeptide chains into a single functional protein complex. This level of structure is stabilized by the same types of interactions as the tertiary structure.