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

Endomembrane System: Protein Secretion

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Endomembrane System: Protein Secretion

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Multiple Choice

Which of the following is synthesized in the rough endoplasmic reticulum?

Lipids for membrane synthesis

Proteins destined for secretion

Cholesterol for steroid hormone production

Glycogen for energy storage

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Verified step by step guidance

Understand the function of the rough endoplasmic reticulum (RER): The RER is studded with ribosomes, which are the sites of protein synthesis. This structure is primarily involved in the synthesis of proteins, especially those that are to be secreted from the cell, incorporated into the cell's plasma membrane, or sent to an organelle.

Differentiate between the functions of the rough and smooth endoplasmic reticulum: The smooth endoplasmic reticulum (SER) is involved in lipid synthesis, metabolism of carbohydrates, and detoxification of drugs and poisons. In contrast, the RER is involved in protein synthesis due to the presence of ribosomes.

Analyze the options given: Lipids for membrane synthesis are typically synthesized in the smooth endoplasmic reticulum, not the rough endoplasmic reticulum.

Consider the synthesis of cholesterol and glycogen: Cholesterol for steroid hormone production is also synthesized in the smooth endoplasmic reticulum, while glycogen is stored in the cytoplasm and not synthesized in the endoplasmic reticulum.

Conclude with the correct function of the RER: Proteins destined for secretion are synthesized in the rough endoplasmic reticulum, as it is equipped with ribosomes necessary for protein synthesis.