Question

Active transport is characterised by

• A. Requires special membrane proteins
• B. Highly selective
• C. Requires ATP energy
• D. All of the above

Answer 1

The correct option is D All of the above

• Active transport can be defined as the movement of molecules or ions across a plasma membrane from a region of lower concentration (of molecules or ions) to a region of higher concentration, against the concentration gradient.
• For this cellular energy is required which is available in the form of ATP molecule and enzymes.
• So, the correct answer is 'All of the above'.