Active Transport Across Cell Membrane
Active transport is energy-dependent and requires ATP molecules to transport molecules across the cell membrane from a low concentration to a high concentration. This type of transport is facilitated by proteins present in the cell membrane, known as transport proteins and pumps. These protein pumps allow only selected molecules to pass across the membrane. Active transport is of two types: primary and secondary active transport.
Primary Active Transport
Transmembrane proteins aid in the detection of the molecule that has to be conveyed during the primary active transport. Afterwards, these molecules are pushed, using chemical energy called ATP, to the target place.
Secondary Active Transport
Porin proteins are transmembrane proteins that handle secondary active transport. In this kind of transport, molecules are transported along a channel created by electromagnetic current. Co-transporters, or two additional transport systems, make up secondary active transport.
Transport Across Cell Membrane
Transport across the cell membrane is a special process that occurs via the cell membrane. The cell membrane keeps the internal and external environment separate and allows only specific molecules to transport across it. Transportation of molecules occurs via a specialized process known as active and passive transport. The selection of a molecule transporter depends on the molecule to be transported.
In this article, we will discuss transport system types, mechanisms of transport, active transport, passive transport, bulk transport, examples of transport, and factors influencing these transports.
Table of Content
- What is Transport Across Cell Membrane?
- Types and Mechanisms of Transport Across Cell Membrane
- Active Transport Across Cell Membrane
- Passive Transport Across Cell Membrane
- Bulk Transport
- Factors Influencing Transport Across Cell Membrane
- Examples of Transport Across the Cell Membrane