[Campbell Biology P.261] Based on the diagram "How does cell signaling fuel the desperate fl... | Practice Question

Based on the diagram "How does cell signaling fuel the desperate flight of an impala?", which of the following events directly follows the impala sensing a cheetah and its brain signaling the adrenal glands to release epinephrine?

  • A: Glycogen is broken down into glucose.
  • B: An enzyme is activated.
  • C: An epinephrine molecule binds to a receptor on a muscle cell.
  • D: Relay molecules transmit the signal.

Explanation

The diagram shows the sequence: 1. Impala senses cheetah → Brain signals adrenal glands to release epinephrine. 2. Signal reception: "An epinephrine molecule binds to a receptor on a muscle cell." This directly follows the release of epinephrine.