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

Membrane Transport of Ions

Biochemistry

11. Biological Membranes and Transport

Membrane Transport of Ions

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

The voltage-gated potassium channels associated with an action potential provide an example of what type of membrane transport?

Simple diffusion.

Facilitated diffusion.

Coupled transport.

Primary active transport.

Secondary active transport.

Previous problemNext problem

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 passive (not requiring energy) or active (requiring energy).

Identify the types of membrane transport: Simple diffusion involves movement down a concentration gradient without energy or assistance. Facilitated diffusion also moves substances down a concentration gradient but requires a transport protein. Active transport moves substances against a concentration gradient and requires energy.

Recognize the role of voltage-gated potassium channels: These channels open in response to changes in membrane potential, allowing potassium ions to move across the membrane.

Determine the type of transport for potassium channels: Since potassium ions move through these channels down their concentration gradient without the direct use of cellular energy, this is a form of facilitated diffusion.

Differentiate facilitated diffusion from other types: Facilitated diffusion uses transport proteins but does not require energy, unlike active transport which requires energy to move substances against their gradient.