You Are Working on a Team That Is Designing a New

question 40

Multiple Choice

You are working on a team that is designing a new drug. In order for this drug to work, it must enter the cytoplasm of specific target cells. Which of the following would be a factor that determines whether the molecule selectively enters the target cells?

• A) blood or tissue type of the patient
• B) hydrophobicity of the drug molecule
• C) lack of charge on the drug molecule
• D) similarity of the drug molecule to other molecules transported by the target cells
• E) lipid composition of the target cells' plasma membrane

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Definitions:

Neuron

A cell of the nervous system that transmits information through electrical and chemical signals.

Postsynaptic Potential

A change in membrane potential of the postsynaptic terminal of a synapse, typically induced by the binding of neurotransmitters.

Neurotransmitters

Chemical substances that transmit signals across a synapse from one neuron to another in the brain and nervous system.

Synaptic Cleft

The narrow space between the terminal button of a neuron and the dendrite or cell body of another neuron where neurotransmitters are released.