Amplification is an important characteristic of signal transduction pathways involving surface receptors. What is
amplification and how is it accomplished in the cell?
What will be an ideal response?
ANSWER: Amplification is an increase in the magnitude of each step in a signal transduction pathway.
Amplification occurs because many of the proteins that carry out individual steps in the
pathway are enzymes. Once activated, each enzyme can activate hundreds or thousands of
proteins in the signal transduction cascade.
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What will be an ideal response?
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A. a worldwide decrease in population growth due to limited resources.
B. a continuation of human population growth at the same pace as in the previous century.
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D. an increase in population growth in all countries in the world.