Which of the following statements describes active transport?(1 point)
Responses
Spontaneous movement of a substance through a semipermeable membrane.
Spontaneous movement of a substance through a semipermeable membrane.
Movement of a specific substance across a membrane.
Movement of a specific substance across a membrane.
[Movement of a substance against a concentration gradient. D]
[Movement of a substance against a concentration gradient. D]
Net movement of a substance from a region of higher concentration to a region of lower concentration