Cellular Signals and Communication

Practice Questions

GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Cellular Signals and Communication

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1

The sodium-potassium pump works by bringing sodium __________ cells and potassium __________ cells through the use of ATP.

2

The sodium-potassium pump works by bringing sodium __________ cells and potassium __________ cells through the use of ATP.

3

Which of the following events occur when the MAP Kinase pathway is activated?

4

Which of the following events occur when the MAP Kinase pathway is activated?

5

What protein is responsible for maintaining the resting potential across a neuronal plasma membrane?

6

What protein is responsible for maintaining the resting potential across a neuronal plasma membrane?

7

An action potential occurs in an axon that synapses at a muscle; this specific type of synapse is called a neuromuscular junction. During the action potential, the membrane potential of the axon sharply depolarizes as the signal moves towards the terminal. Upon reaching the synaptic terminal, neurotransmitters are released and interact with receptors on the muscle. Which of the following best summarizes the changes that occur in the post-synaptic muscle after a neurotransmission event?

8

An action potential occurs in an axon that synapses at a muscle; this specific type of synapse is called a neuromuscular junction. During the action potential, the membrane potential of the axon sharply depolarizes as the signal moves towards the terminal. Upon reaching the synaptic terminal, neurotransmitters are released and interact with receptors on the muscle. Which of the following best summarizes the changes that occur in the post-synaptic muscle after a neurotransmission event?

9

Which of the following hormones will elicit a response in cells by attaching to a membrane bound receptor?

10

Which of the following hormones will elicit a response in cells by attaching to a membrane bound receptor?

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