Cellular Transport Flashcard

Front

What is the function of the cell membrane?

Back

The cell membrane acts as a barrier that regulates what enters and exits the cell, making it semipermeable.

Tags

NGSS.MS-LS1-2

Front

Define osmosis.

Back

Osmosis is the movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

Diffusion is the process by which molecules such as oxygen and carbon dioxide move freely across the cell membrane from an area of higher concentration to an area of lower concentration.

Tags

NGSS.MS-LS1-2

Front

What is passive transport?

Back

Passive transport is a type of cellular transport that does not require energy from the cell to move substances across the membrane.

Front

What is the significance of the semipermeable nature of the cell membrane?

Back

The semipermeable nature of the cell membrane allows for selective transport of substances, maintaining homeostasis within the cell.

Tags

NGSS.HS-LS1-3

Front

Explain the role of concentration gradients in cellular transport.

Back

Concentration gradients drive the movement of molecules during diffusion and osmosis, as substances move from areas of higher concentration to areas of lower concentration.

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 require energy and moves substances along their concentration gradient.

Front

Give an example of a substance that moves via osmosis.

Back

Water is a common substance that moves via osmosis across cell membranes.

Tags

NGSS.HS-LS1-3

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.