Question

question 1
which of the following situations represents released energy:
(1) a dart shot out of a dart gun,
(2) a compressed spring in a dart gun, or
(3) active transport of a substance across a cellular membrane?

Explanation:

1. When a dart is shot out of a dart - gun, the elastic potential energy stored in the compressed spring is converted into the kinetic energy of the dart, releasing energy.
2. A compressed spring in a dart - gun has stored elastic potential energy, but it hasn't released energy yet; it is in a state of storing energy.
3. Active transport of a substance across a cellular membrane requires energy input (usually in the form of ATP hydrolysis) rather than releasing energy.

Answer:

A. 1 only