Brainscape's Knowledge GenomeTM

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


See full index

Phys Exam 1 > Membrane Transport > Flashcards

Membrane Transport Flashcards

1
Q

Osmosis

A

movement of water across selectively permeable membrane

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

How does lipid solubility affect simple diffusion?

A

increase lipid = increase diffusion

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

How does molecular size affect simple diffusion?

A

increase size = decrease diffusion

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

How does cell membrane thickness affect simple diffusion?

A

increase thickness = decrease diffusion

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

How does concentration gradient affect simple diffusion?

A

greater conc. gradient = faster diffusion

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

How does temperature affect simple diffusion?

A

higher temp = faster diffusion

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

True or False. Membrane surface area and composition of lipid bilayer do not play a role in simple diffusion

A

False

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

What are the three factors that affect diffusion through channels?

A

1) permeability
2) selectivity
3) concentration gradient

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

Does facilitated diffusion require energy?

A

no

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

True or false. Facilitate diffusion has a faster transport rate than simple diffusion

A

True

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

True or False. Active transport can transport uncharged substance against its concentration gradient

A

True (with expenditure of energy)

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

What are ABC proteins?

A

ATP binding cassette

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

True or False. ABC protein family are all carriers

A

FALSE

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

What characteristic do all proteins in ABC protein family share?

A

All have ATP binding domain

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

Symporters and antiporters are examples of which type of transport?

A

secondary active transport

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

How does secondary active transport get energy?

A

coupling of a substance moving down its concentration gradient

17
Q

Does vesicular transport require energy?

A

yes

18
Q

What are the five types of endocytosis?

A

1) phagocytosis
2) pinocytosis
3) fluid-phase
4) receptor-mediated
5) caveolae

19
Q

Which of the five types of endocytosis require clathrin?

A

fluid-phase and receptor-mediated

20
Q

What’s the difference between fluid-phase and receptor-mediated endocytosis?

A

Fluid-phase is non-specific (anything that is dissolved in ECF has a chance of being endocytosed)
Receptor-mediated is specific

Phys Exam 1 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions