Question

The main difference between active and passive transport across cell membrane is :

• A. Passive transport is non-selective wherease active transport is selective
• B. Passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes
• C. Passive transport is confined to anionic carrier proteins whereas active transport is confined to cationic channel proteins
• D. Active transport occurs more rapidly than passive transport

Answer 1

Answer: (B)

Passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes

Answer 2

Answer (b) Passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes