Georgia Biology Standards SB1d: Cellular Transport

Front

What is required for the diffusion of a substance into or out of a cell?

Back

A concentration gradient.

Front

Which process involves the net movement of water molecules across a semipermeable membrane?

Back

Osmosis.

Front

What is the term for the movement of substances against a concentration gradient?

Back

Active Transport.

Front

How do molecules cross cell membranes from low to high concentration using carrier proteins?

Back

By active transport.

Front

What causes red blood cells to change size when placed in a solution with a different concentration?

Back

Water is moving into or out of the cell from its environment.

Front

Define diffusion in the context of cellular transport.

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the role of carrier proteins in cellular transport?

Back

They facilitate the movement of substances across the cell membrane, especially during active transport.

Front

Explain the difference between passive transport and active transport.

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What happens to a cell in a hypertonic solution?

Back

The cell loses water and may shrink.

Front

What is a hypotonic solution and its effect on cells?

Back

A hypotonic solution has a lower concentration of solutes compared to the cell, causing water to enter the cell and potentially leading to swelling or bursting.