Which statement correctly describes the function of pumps in the plasma membrane? (1 point)
Responses
Pumps store water in the plasma membrane for later use by the cell.
Pumps store water in the plasma membrane for later use by the cell.
Pumps move substances through the plasma membrane.
Pumps move substances through the plasma membrane.
Pumps hold the plasma membrane together.
Pumps hold the plasma membrane together.
Pumps glue the plasma membranes of adjacent cells together.
Pumps move substances through the plasma membrane.
The correct statement is: Pumps move substances through the plasma membrane.
The correct statement describing the function of pumps in the plasma membrane is: "Pumps move substances through the plasma membrane."
To understand why this statement is correct, we need to know a bit about the structure and function of the plasma membrane. The plasma membrane is a selectively permeable barrier that surrounds the cell and separates its internal environment from its external environment. It controls the movement of substances into and out of the cell.
Pumps, also known as transport proteins, are integral membrane proteins that play a crucial role in facilitating the movement of substances across the membrane. These substances can include ions, nutrients, waste products, and signaling molecules. Pumps use energy, often in the form of ATP (adenosine triphosphate), to actively transport these substances against their concentration gradient.
The movement of substances through the plasma membrane via pumps is a form of active transport, as it requires energy expenditure by the cell. This mechanism allows cells to maintain specific internal conditions, such as ion concentrations and pH levels, that are necessary for their proper functioning.
In summary, pumps in the plasma membrane are responsible for actively moving substances across the membrane, allowing cells to regulate their internal environment and carry out essential processes.