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 Heart2h 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

Passive vs. Active Transport

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Passive vs. Active Transport

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Multiple Choice

A transport protein that simultaneously transports two different molecules in different directions is called:

A uniporter

A symporter

An equilibrium protein

An antiporter

A simple diffuser

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Verified step by step guidance

Understand the concept of transport proteins: Transport proteins are integral membrane proteins that facilitate the movement of ions, small molecules, or macromolecules across a biological membrane.

Differentiate between types of transport proteins: Uniporters transport a single type of molecule across the membrane, symporters transport two different molecules in the same direction, and antiporters transport two different molecules in opposite directions.

Identify the function of an antiporter: An antiporter is a type of transport protein that moves two different molecules or ions across a membrane in opposite directions. This is often used to maintain concentration gradients and balance within cells.

Consider the context of the problem: The question asks for a transport protein that simultaneously transports two different molecules in different directions, which matches the definition of an antiporter.

Review the options provided: Compare the definitions of uniporter, symporter, equilibrium protein, and simple diffuser to confirm that antiporter is the correct choice for the described function.