Tumor Suppressor Genes

question 64

Multiple Choice

Tumor suppressor genes

• A)are frequently overexpressed in cancerous cells.
• B)are cancer-causing genes introduced into cells by viruses.
• C)can encode proteins that promote DNA repair or cell-cell adhesion.
• D)often encode proteins that stimulate the cell cycle.
• E)all of the above

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Definitions:

Positive Ions

Entities such as atoms or molecules that possess a net positive charge due to the loss of one or more electrons.

Action Potential

Action Potential is a rapid and momentary electrical charge that travels along a neuron, triggering the release of neurotransmitters and the transmission of signals.

Neurotransmitters

Chemical messengers that transmit signals across the synaptic gap from one neuron to another in the nervous system.

Synaptic Gap

The tiny space between neurons where neurotransmitters are released to transmit information.