Cell Membrane & Transport

Front

Diffusion & Facilitated Diffusion are both __________ transport.

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy.

Front

The cell expanded in size to the point of lysing (bursting), which means it was placed in a ____ solution.

Back

Hypotonic solution is one where the concentration of solutes is lower outside the cell than inside, causing water to enter the cell.

Front

A type of passive transport that occurs when water crosses a cell membrane.

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

This process uses ATP (energy).

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy.

Front

The cell shows water moving in and out equally, which means it was placed in a ___ solution.

Back

Isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is the primary function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and support.

Front

Define passive transport.

Back

Passive transport is the movement of substances across a cell membrane without the need for energy input.

Front

What is the role of proteins in facilitated diffusion?

Back

Proteins act as channels or carriers to help transport substances across the cell membrane that cannot easily pass through.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.