Question

Energy dependent transport is also known as _____________.

• A. active transport
• B. passive transport
• C. diffusion
• D. osmosis

Answer 1

The correct option is A active transport

Transport through cell membrane occurs by two means i.e., active transport and passive transport. Passive transport will not allow expenditure of cellular energy but in active transport, it allows the movement of molecules across the cell membrane through the use of cellular energy i.e., ATP.
Three common types of passive transport include simple diffusion, osmosis, and facilitated diffusion.
Examples of active transport includes transport using ATP via sodium-potassium pump to move 3 Na+ ions out while moving 2 K+ ions into the cell. Active transport using Redox energy (of NADH) to generate a proton gradient in the inner mitochondrial membrane.