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 a function of the rough endoplasmic reticulum (ER) in the process of protein secretion?

Synthesis of proteins destined for secretion

Detoxification of drugs and poisons

Synthesis of lipids for membrane formation

Storage of calcium ions

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Verified step by step guidance

Understand the structure of the rough endoplasmic reticulum (ER): It is studded with ribosomes on its cytoplasmic surface, which gives it a 'rough' appearance under a microscope.

Recognize the primary function of the rough ER: The ribosomes attached to the rough ER are sites for protein synthesis, specifically for proteins 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 ER and the smooth ER: The smooth ER is involved in lipid synthesis, detoxification of drugs and poisons, and storage of calcium ions, which are not functions of the rough ER.

Identify the role of ribosomes in protein synthesis: Ribosomes on the rough ER translate mRNA into polypeptide chains, which are then folded and modified into functional proteins within the ER lumen.

Conclude that the synthesis of proteins destined for secretion is the specific function of the rough ER, distinguishing it from other cellular processes like detoxification or lipid synthesis, which are associated with the smooth ER.