If a Cell Membrane Lacking Integral Proteins Is Prepared by the Freeze-Fracture

question 69

Multiple Choice

If a cell membrane lacking integral proteins is prepared by the freeze-fracture technique and examined under the electron microscope, the exposed interior of the membrane bilayer will

• A) reveal a bumpy surface.
• B) show hydrophobic side chains.
• C) show an asymmetric distribution of proteins.
• D) show cytoskeletal anchors.
• E) look smooth.

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Definitions:

Inhibitory

Pertaining to a neurotransmitter, neuron, or process that decreases the likelihood of a neuron firing and transmitting its message to other neurons.

Hormones

Chemical messengers produced by glands in the body that regulate physiological processes and behavior.

Endorphins

Natural, pain-relieving chemicals produced by the body that promote a sense of well-being and can reduce pain.

Neurotransmitters

Chemical substances in the nervous system that transmit signals from one neuron to another across synapses.