What is Active Transport?
Active transport is a biological process that transport molecules or ions from regions of lower concentration to regions of higher concentration across the cell membrane. Active transport requires cellular energy, usually in the form of adenosine triphosphate (ATP), to move molecules against the concentration gradient. In passive transport, molecules move with their concentration gradient.
Active transport is highly regulated and selective, with different transporters specific to different molecules or ions. This regulation occurs through various mechanisms like the number of transport proteins on the cell membrane, feedback mechanisms, and the availability of energy sources like ATP. Active transport is important for various physiological processes, such as hormone secretion, nutrient uptake, and nerve impulse transmission. Problem in active transport can lead to various disorders, including diabetes, cystic fibrosis, etc.
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Active Transport
Active transport is a cellular process that uses energy mainly in the form of ATP, to move molecules or ions against their concentration gradients. It includes primary active transport, which directly uses energy for transport, and secondary active transport, which utilizes an electrochemical gradient to move other substances. It is essential for many physiological processes, including nutrient absorption in the digestive system, the transmission of nerve impulses, and the regulation of ion concentrations in cells.
Table of Content
- Active Transport Definition
- Types of Active Transport
- Examples of Active Transport
- Differences between Active Transport and Passive Transport