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Gene Expression and Functional Responses
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AP Biology
APB.220 Gene Expression and Functional Responses
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A death signal is tested in defined medium where nutrient concentration is held constant. Which result best isolates signal transduction as the cause of altered apoptosis rather than nutrient limitation?
A
Cells given the death signal are observed under a microscope.
B
The death signal is a protein with a specific amino acid sequence.
C
The defined medium contains glucose and salts in every dish.
D
Death signal increases caspase activity, and a receptor antagonist prevents the increase under the same nutrient conditions.
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