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

Introduction to Membrane Transport

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Membrane Transport

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Multiple Choice

Which type of membrane transport allows a client to absorb nutrients from the small intestine into the bloodstream without the use of cellular energy?

Active transport

Endocytosis

Osmosis

Simple diffusion

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Verified step by step guidance

Understand the concept of membrane transport: Membrane transport refers to the movement of substances across the cell membrane. It can be classified into active transport (requires energy) and passive transport (does not require energy).

Review the characteristics of passive transport: Passive transport includes processes like simple diffusion, osmosis, and facilitated diffusion. These processes rely on the concentration gradient and do not require cellular energy (ATP).

Define simple diffusion: Simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration directly through the lipid bilayer of the cell membrane. This process does not require energy and is driven by the concentration gradient.

Apply the concept to nutrient absorption: In the small intestine, nutrients like oxygen, carbon dioxide, and small lipid-soluble molecules can move into the bloodstream via simple diffusion because they follow the concentration gradient and do not require cellular energy.

Eliminate other options: Active transport requires energy (ATP), endocytosis involves the engulfing of substances by the cell membrane (also energy-dependent), and osmosis specifically refers to the movement of water molecules. None of these match the description of simple diffusion for nutrient absorption.