The statements that are true about active transport are “ It is transport against concentration gradient” and “ It is transport that requires energy”. Hence, Option A and C are the correct answers.
The common type of transport used to explain carrier-mediated transport is active transport and facilitated diffusion. Active transport is explained as follows:
- It is a transport type in which substances including glucose, amino acids, and ions are transported across the region of the biological membrane from the region of lower concentration to the region of higher concentration
- This transport takes place against the concentration gradient
- Thus, it requires energy in the form of ATP to pass molecules against the concentration gradient
Thus, we can conclude that the active transport takes place against a concentration gradient and it requires energy. Hence, Option A and C are considered correct answers.
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