Diffusion Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is a solution?

A

A mixture of 2 or more substances (a solute and a solvent)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is a solute?

A

A substance that is dissolved in a solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a solvent?

A

The dissolving agent, a substance which the solute dissolves into (eg. water)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is diffusion?

A

Diffusion is the process by which molecules or ions of liquids/gases move from regions of high concentration to low concentration.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where does movement of molecules occur?

A

Across the cell membrane and up or down a concentration gradient.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Is moving from areas of high concentration or low concentration moving up or down the concentration gradient?

A

Down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is simple diffusion?

A

Simple diffusion is the simple and unaided movement of molecules through a cell membrane.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the point of the concentrations becoming equal?

A

Dynamic Equilibrium no. molecules entering = no. molecules exiting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is facilitated Diffusion?

A

Is when transport proteins assist particles to diffuse across a membrane as their molecules are too big.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the two types of transport proteins?

A
  1. Carrier proteins

2. Channel proteins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly