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

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Multiple Choice

Which of the following statements is false about a signal-gated ion channel receptor?

They are present in the cell membrane.

They respond to the presence of intracellular signaling molecules.

Differences in membrane potential can affect whether the channel receptors are open or close.

They are a type of gated-ion-channel that can open and close under different conditions.

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Verified step by step guidance

Understand the function of signal-gated ion channel receptors: These receptors are a type of ion channel that opens or closes in response to specific intracellular signaling molecules, allowing ions to pass through the cell membrane.

Identify the location of signal-gated ion channel receptors: They are typically embedded in the cell membrane, allowing them to regulate ion flow in response to intracellular signals.

Differentiate signal-gated ion channels from other types of ion channels: Unlike voltage-gated ion channels, which respond to changes in membrane potential, signal-gated ion channels respond to specific signaling molecules.

Evaluate the statement about membrane potential: Signal-gated ion channels are not directly affected by changes in membrane potential; instead, they are controlled by intracellular signaling molecules.

Conclude which statement is false: The statement that differences in membrane potential can affect whether the channel receptors are open or closed is false for signal-gated ion channels, as they are not influenced by membrane potential changes.