Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

11. Biological Membranes and Transport

Passive vs. Active Transport

Biochemistry

11. Biological Membranes and Transport

Passive vs. Active Transport

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Multiple Choice

Passive membrane transport processes include___________.

Consumption of ATP for energy.

The use of transport proteins to move a substance from low to high concentration.

Movement of a substance down its concentration gradient.

Movement of a substance up its concentration gradient.

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Verified step by step guidance

Understand the concept of passive transport: Passive transport is a type of membrane transport that does not require energy input from the cell. It relies on the natural movement of substances down their concentration gradient.

Identify the key characteristic of passive transport: The movement of substances from an area of higher concentration to an area of lower concentration, which is known as moving down the concentration gradient.

Differentiate between passive and active transport: Active transport requires energy, often in the form of ATP, to move substances against their concentration gradient (from low to high concentration), whereas passive transport does not require energy.

Recognize the role of transport proteins in passive transport: Some passive transport processes, like facilitated diffusion, involve transport proteins that help substances move across the membrane without energy input, but still down their concentration gradient.

Conclude with the correct answer: The correct characteristic of passive membrane transport is the movement of a substance down its concentration gradient, which aligns with the definition of passive transport.