Which type of movement across a cell’s plasma membrane requires energy supplied by atp?

Question: Which type of movement across a cell’s plasma membrane requires energy supplied by atp?

The type of movement across a cell's plasma membrane that requires energy supplied by ATP is active transport.

Active transport is the movement of molecules or ions across a cell membrane against their concentration gradient. This means that the molecules or ions are moving from an area where they are less concentrated to an area where they are more concentrated.

Active transport requires energy because it is working against the concentration gradient. This energy is supplied by ATP, which is the cell's energy currency.

There are two types of active transport: primary active transport and secondary active transport.

Primary active transport is the direct use of ATP to move molecules or ions across a cell membrane. An example of primary active transport is the sodium-potassium pump, which moves sodium ions out of the cell and potassium ions into the cell.

Secondary active transport uses the energy gradient created by primary active transport to move other molecules or ions across the cell membrane. An example of secondary active transport is the cotransport of glucose and sodium ions.

Active transport is an essential process for cells. It allows cells to maintain their internal environment, regulate the movement of molecules and ions, and absorb nutrients.

Here are some examples of active transport in cells:

• The absorption of nutrients from the digestive tract into the bloodstream
• The secretion of hormones and other signaling molecules from cells
• The maintenance of the cell's resting potential
• The transport of molecules across the blood-brain barrier

Active transport is a complex process, but it is essential for life. Without active transport, cells would not be able to function properly.