LIFE SCIENCE

Detailed explanation-1: -This is called cotransport. It is of two types: symport and antiport method. In symport method of cotransport, both molecules cross the membrane in the same direction at the same time. In antiport method of cotransport, both molecules move in opposite direction.

Detailed explanation-2: -An antiporter (also called exchanger or counter-transporter) is a cotransporter and integral membrane protein involved in secondary active transport of two or more different molecules or ions across a phospholipid membrane such as the plasma membrane in opposite directions, one into the cell and one out of the cell.

Detailed explanation-3: -A pore that simultaneously transports 2 different molecules in different directions is called a: Antiporter. A pore that simultaneously transports 2 different molecules in the same direction is called a: Symporter.

Detailed explanation-4: -Symport: move together in the same direction. Antiport: move in opposite directions in the form of an exchange.