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 Membrane Transport

Biochemistry

11. Biological Membranes and Transport

Passive Membrane Transport

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Multiple Choice

The rate of transfer across a membrane is measured for a given molecule. The diffusion rate is seen to be hyperbolic with respect to the concentration of the diffusing molecule. The method of transport is which of the following?

Facilitated diffusion.

Active transport.

Simple Diffusion.

Symporter diffusion.

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Verified step by step guidance

Identify the characteristics of the diffusion rate described in the problem. A hyperbolic relationship between the rate of transfer and concentration suggests a saturation point, which is typical of facilitated processes.

Understand the nature of facilitated diffusion. Facilitated diffusion involves the use of transport proteins to move molecules across the membrane, and it exhibits a hyperbolic rate of transfer as the transport proteins become saturated.

Differentiate between facilitated diffusion and other types of transport. Active transport requires energy and can move substances against their concentration gradient, while simple diffusion does not involve transport proteins and does not show saturation kinetics.

Consider the role of transport proteins in facilitated diffusion. These proteins help specific molecules cross the membrane more efficiently than they would by simple diffusion alone, leading to the observed hyperbolic relationship.

Conclude that the hyperbolic diffusion rate indicates facilitated diffusion, as it aligns with the characteristics of transport protein involvement and saturation kinetics.