Question

Primary and secondary active transport both-
A. Generate ATP
B. Use ATP
C. Can move solutes against concentration gradient
D. Include passive movement of glucose molecule

Answer 1

Hint: active transport is an energy consuming process. It uses ATP molecules for transportation of molecules and ions across cell membranes against their concentration gradient.

Complete answer:
Transport of molecules across the cell membrane happens in two ways, passive transport and active transport. Passive transport occurs by osmosis or simple diffusion, it does not require energy consumption.
Movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration i.e. against their concentration gradient is called active transport. It consumes cellular energy to achieve such movement. It is of 2 types- primary active transport, uses adenosine triphosphate (ATP), and secondary active transport which uses an electrochemical gradient.
Primary active transport- it is also called direct active transport, it directly uses metabolic energy for the transport of molecules across a membrane. Substances and metal ions, such as Na+, K+, Mg2+, and Ca2+ are transported by this process. Ion pumps or ion channels are required to cross membranes.
Secondary active transport – it is also known as coupled transport, for the transport of molecules across a membrane, energy is required, it depends upon the electrochemical potential difference generated by pumping ions in/out of the cell.

Thus the correct answers are- B and C.

Note: Both primary and secondary active transport use ATP, transport of molecules and ions against concentration gradient happens through it. The passive transport occurs due to semi permeability of the plasma membrane.