Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology Unit 2 > Cell Membrane And Diffusion > Flashcards

Cell Membrane And Diffusion Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

What is the cell membrane also called

A

The plasma membrane

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

What is the cell membrane made of?

A

Phospholipids,proteins,sugars and cholesterol

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

What is it called when the parts are able to move around?

A

Fluidity

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

What is the head of a phospholipid?

A

It has a glycerol and polar head

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

What is the tail of the phospholipid?

A

It has a fatty acid and nonpolar tail

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

What is another type of lipid that looks different from cholesterol?

A

Steroid

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

Or steroids polar or non-polar?

A

Nonpolar

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

What can steroids be?

A

Chemical messengers

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

What is the steroid that helps maintain the structure of the animal cell membrane?

A

Cholesterol

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

Prokaryotes and plants don’t have what, in there so membranes?

A

Cholesterol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the proteins role in the cell membrane?

A

Receptor(receives signals)

Transports protein(moves molecules across the membrane)

Channels(acts as a doorway)

Glycoproteins (acts as ID tags)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What can move through the cell membrane?

A

Small hydrophobic molecules and small uncharged molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What cannot pass through the cell membrane?

A

Large or polar molecules and ions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Concentration Gradient

A

The unequal distribution of particles in a given space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Equilibrium

A

The equal distribution of particles in a given space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the first characteristic of passive transport

A

It does not require energy

17
Q

What is the second characteristic of passive transport

A

Movement of molecules from high to low concentration

18
Q

What is the third characteristic of passive transport

A

It’s purpose is to reach equilibrium

19
Q

What are the types of passive transport?

A

Diffusion, osmosis, facilitated diffusion

20
Q

What is the description of diffusion?

A

The movement of any particle from high to low concentration

21
Q

What can pass through the cell membrane during diffusion?

A

Only things that are nonpolar and uncharged molecules

22
Q

What is the description of osmosis?

A

It is the movement of water from high to low concentration across a membrane

23
Q

Hypotonic

A

Less solute

24
Q

Isotonic

A

Equal concentration of solute

25
Q

Hypertonic

A

More solute

26
Q

What is the description facilitated diffusion?

A

It moves particles from high to low concentration across the cell membrane with the aid of special membrane transport proteins

27
Q

What is facilitated diffusion for?

A

It is for larger or charged particles that requires a protein channel

Biology Unit 2 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions