Biology: Uniporters, symporters and antiporters

Uniporters, symporters, and antiporters are proteins that are used in ​transport​ of substances across a cell membrane. Uniporters are involved in facilitated diffusion and work by binding to one molecule of substrate at a time to move it along its concentration gradient. Symporters and antiporters are involved in active transport. Antiporters transport molecules in opposite directions, while symporters transport molecules in the same direction.

Biology

Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important. Covers topics seen in a high school or first-year college biology course.

Active transport

In active transport, the cell has to pay (often, in the form of ATP) to move molecules against their gradients. Learn more about the amazing protein machines that make this possible.

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