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These are not necessarily the mechanisms, but I believe you are referring to active and passive transport. Active transport uses energy (from adenosine triphosphate, or ATP) to move solutes from an area of low concentration to an area of high concentration This movement is against the concentration gradient, so energy is required. Passive transport is when the solutes basically fall from an area of high concentration to an area of low concentration across a membrane. Since solutes naturally seek to equalize concentration across a membrane, no added energy is required for passive transport.
What else can I help you with?
What part of a plants cell acts as a goalie?
The cell membrane acts as a "goalie" for a plant cell, controlling what substances can enter and exit the cell to maintain internal balance.
What is the function of a cells selectively permeable membrane?
Regulates what enters and leaves the cell
What characteristic does it called when the cell membrane allows only certain molecules and ions to enter or exit the cell?
Selective permeability is the characteristic of the cell membrane that allows only certain molecules and ions to enter or exit the cell. This feature helps regulate the internal environment of the cell by controlling what substances can pass through.
What maintains a chemical balance within a cell by regulating the materials that enter and leave the cell?
The cell membrane, specifically through the process of selective permeability, helps to maintain a chemical balance within a cell by controlling the substances that can enter and exit the cell. This regulation ensures that essential molecules are able to enter the cell while harmful substances are kept out, contributing to the overall health and function of the cell.
What flexible barrier that protects the inside of the cell?
The cell membrane is a flexible barrier that protects the inside of the cell. It regulates the passage of substances in and out of the cell, allowing necessary nutrients to enter and waste products to exit.
What is used to help substances enter or exit the cell?
Osmosis
What is the characteristic of a sell membrane that controls which substances can enter and exit the cell?
The selective permeability, also called semi-permeability, of the membrane controls which substances cant enter and exit the cell.
What is the characteristics of a cell membrane controls which substances can enter and exit the cell?
selective permeability
What is the characteristic of a cell membrane that control which substances can enter and exit the cell?
selective permeability
What cell is used to help substances enter or exit the cell membrane?
Osmosis
What is the characteristic of a cell membrane that the controls which substances can enter and exit the cell?
selective permeability
What is the characteristic of a cell membrane that's controls which substances can enter and exit the cell?
selective permeability
The flexible outer boundary of the cell through which substances enter and exit is called?
Cell membrane
Which are the small openings in the nuclear envelope that regulate which substances enter and exit the nucleus?
The small openings in the nuclear envelope that regulate what substances enter and exit the nucleus are called nuclear pores. A process of depositing a vesicle's contents outside the cell is exocytosis.
What part of a plants cell acts as a goalie?
The cell membrane acts as a "goalie" for a plant cell, controlling what substances can enter and exit the cell to maintain internal balance.
Which layer controls selective permeability?
The cell membrane controls selective permeability. Larger substances can enter the cell through endocytosis and exit through exocytosis.
What is the function of a cells selectively permeable membrane?
Regulates what enters and leaves the cell
