16.3 - Passive Transport Flashcard (2024)

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein helpers to move substances across the cell membrane.

Front

What is osmosis?

Back

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

Front

What regulates what enters and leaves a cell?

Back

The cell membrane regulates what enters and leaves a cell.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space.

Front

What is the difference between diffusion and facilitated diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration without assistance, while facilitated diffusion requires protein helpers.

Front

What type of transport requires energy?

Back

Active transport requires energy to move substances against their concentration gradient.

Front

What is an example of a substance that moves via osmosis?

Back

Water is a common example of a substance that moves via osmosis.

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 happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.