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

What is the primary difference between the rough endoplasmic reticulum (ER) and the smooth endoplasmic reticulum (ER) in eukaryotic cells?

The rough ER has ribosomes attached to its surface, while the smooth ER does not.

The rough ER is found only in animal cells, while the smooth ER is found only in plant cells.

The rough ER is involved in lipid synthesis, while the smooth ER is involved in protein synthesis.

The rough ER is responsible for detoxification processes, while the smooth ER is not.

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Verified step by step guidance

Begin by understanding the structure and function of the endoplasmic reticulum (ER) in eukaryotic cells. The ER is a network of membranous tubules and sacs that plays a crucial role in the synthesis and transport of proteins and lipids.

Identify the two types of ER: rough ER and smooth ER. The rough ER is characterized by the presence of ribosomes on its surface, giving it a 'rough' appearance under a microscope. The smooth ER lacks these ribosomes, hence its 'smooth' appearance.

Explore the functions of the rough ER. The ribosomes attached to the rough ER are sites of protein synthesis. As proteins are synthesized, they are threaded into the lumen of the rough ER where they undergo folding and modification.

Examine the functions of the smooth ER. Unlike the rough ER, the smooth ER is involved in lipid synthesis, metabolism of carbohydrates, detoxification of drugs and poisons, and storage of calcium ions.

Clarify the misconception that the rough ER is found only in animal cells and the smooth ER only in plant cells. Both types of ER are present in eukaryotic cells, including both plant and animal cells, serving distinct but complementary roles.