Which statement best describes passive transport?

Which of the following best describes passive transport? It does not require energy and moves molecules with the concentration gradient.

What defines passive transport?

Definition of passive transport

: the movement of substances (as by diffusion) across a cell membrane without the expenditure of energy — compare active transport.

What is an example of passive transport?

Passive transport does not require energy input. An example of passive transport is diffusion, the movement of molecules from an area of high concentration to an area of low concentration. Carrier proteins and channel proteins are involved in facilitated diffusion.

Which statement best describes active transport different from passive transport?

The difference between passive transport and active transport is that the active transport requires energy, and moves substances against their respective concentration gradient, whereas passive transport requires no cellular energy and moves substances in the direction of their respective concentration gradient.

What statement best describes active transport?

During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

What is a passive transport process quizlet?

Passive transport processes move substances across the plasma membrane without the use of energy. The substances move along their concentration gradient – that is, from high concentration to low concentration. Passive transport processes include: diffusion, osmosis and facilitated diffusion.

Which of the following is a true statement about passive transport?

Which of the following is a true statement about passive transport? Substances naturally move from areas of high concentration to areas of low concentration.

Which of the following best describes secondary active transport?

Which of the following best describes secondary active transport? Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance.

What is the result of passive transport?

In passive transport, substances move from an area of higher concentration to an area of lower concentration. … Diffusion through a permeable membrane moves a substance from an area of high concentration (extracellular fluid, in this case) down its concentration gradient (into the cytoplasm).

Can passive transport require a protein quizlet?

A passive transport where molecules diffuse through a semipermeable barrier, without any aid from transport protein. Diffusion of water across a semipermeable barrier.

What transport mechanisms are classified as passive mechanisms?

There are four major types of passive transport are (1) simple diffusion, (2) facilitated diffusion, (3) filtration, and (4) osmosis.

What is passive transport diffusion?

Diffusion is a passive process of transport. A single substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. … Diffusion expends no energy.

What molecules use passive transport?

Not everything enters the cell through passive transport.

Only the smallest molecules like water, carbon dioxide, and oxygen can freely diffuse across cell membranes. Larger molecules or charged molecules often require an input of energy to be transported into the cell.

Why does passive transport occur?

Passive transport usually occurs down a concentration gradient. Essentially what this means is that molecules will move from areas where there are more of them to where there are fewer of them.

What is passive transport Why is diffusion an example of passive transport?

Passive transport is the one which does not require the utilisation of energy. Diffusion is based upon the concentration gradient , it does not require energy so it is also a passive process.

Why is facilitated diffusion called passive transport?

Facilitated diffusion is a type of passive transport. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient. Small nonpolar molecules can easily diffuse across the cell membrane.

Is diffusion same as passive transport?

Diffusion is a passive process of transport. A single substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space.

How is passive transport different from facilitated transport?

The simplest forms of transport across a membrane are passive. … In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.

Which of the following is not an example of passive transport?

The correct answer is option C.

Endocytosis is a form of active transport.

Is osmosis a passive transport?

Osmosis is a form of passive transport when water molecules move from low solute concentration(high water concentration) to high solute or low water concentration across a membrane that is not permeable to the solute. There is a form of passive transport called facilitated diffusion.