Brainscape's Knowledge GenomeTM

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


See full index

Biol 2420 SLCC > Ch 4 - Cell Membrane Transport > Flashcards

Ch 4 - Cell Membrane Transport Flashcards

1
Q

Function of the cell membrane

A
  1. Barrier to separate ECF and ICF 2. Controls in and out transport
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which types of molecules diffuse through the cell membrane easily by simple diffusion?

A

Hydrophobic Molecules -Non-polar molecules (O2, CO2, lipids) -Small polar molecule (H2O)

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

Which types of molecules cannot diffuse through the cell membrane and use a transport protein?

A

Hydrophilic Molecules -Large polar molecules -Ions

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

Permeability 1-4 (1 least, 4 most) CO2 / O2

A

4

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

Permeability 1-4 (1 least, 4 most) H2O / Urea

A

3

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

Permeability 1-4 (1 least, 4 most) Glucose

A

2

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

Permeability 1-4 (1 least, 4 most) Ions

A

1

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

Concentration is higher inside or outside of the cell? Na+

A

Outside

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

Concentration is higher inside or outside of the cell? Ca++

A

Outside

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

Concentration is higher inside or outside of the cell? K+

A

Inside

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

Concentration is higher inside or outside of the cell? Cl-

A

Outside

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

Concentration is higher inside or outside of the cell? Protein content

A

Inside

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

Passive transport through a membrane move _____ the concentration gradient and _____ use energy

A

with does not

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

Active transport through a membrane move _____ the concentration gradient and uses ______ energy

A

against does

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

What are the three types of membrane transport systems?

A

Passive Active Vesicular

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

Simple Diffusion Facilitated diffusion Diffusion through channels Osmosis Are all considered what types of membrane transport systems?

A

Passive Transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Primary active transport Secondary active transport Are all considered what types of membrane transport systems?

A

Active

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Endocytosis and Exocytosis Are considered what types of membrane transport systems?

A

Vesicular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Phagocytosis, pinocytosis, receptor-mediated endocytosis Are considered what types of Vesicular Transport?

A

Endocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is a second way of classifying membrane transport?

A

Simple diffusion Mediated transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

When a transport protein is used in the mediated transport system, which are passive and which are active?

A

Passive -Carrier pump -Channel protein Active -Pump

22
Q

What are 3 types of driving forces that act on molecules?

A

Chemical Electrical Electrochemical

23
Q

Chemical Driving Force: State into or out of cell

A

Out of cell

24
Q

Chemical Driving Force: State into or out of cell

A

Into cell

25
Q

Electrical Driving Force: State into or out of cell

A

Into cell

26
Q

Electrical Driving Force

A

No force applied

27
Q

Electrical Driving Force: state into or out of cell

A

Out of cell

28
Q

Electrochemical Driving Force: state into or out of cell

A

Chemical: into

Electrical: out of

Chemical = Electrical

Therefore; electrochemical force is in equilibrium

29
Q

Electrochemical Driving Force

A

Chemical: into

Electrical: out of

Chemical < Electrical

Therefore; Electrochemical will drive out of cell

30
Q

Electrochemical Driving Force: state into or out of cell

A

Chemical: into

Electrical: out of

Chemical > Electrical

Therefore; Electrochemical will drive Na+ into cell

31
Q

Steps to calculating Electrochemical driving force

A
  1. Draw cell at equillibrium
  2. draw cell at questioned parameters
32
Q

Types of Passive Transport

A

Simple diffusion

Facilitated diffusion

Diffusion through channels

Osmosis

33
Q

Which membrane transport proteins are used for Simple Diffusion?

A

None, it is passive

34
Q

What types of substances are transported by simple diffusion?

A

hydrophobic / lipophilic molecules

(O2, CO2, fatty acids, steroid hormones,

thyroid hormones, fat soluble vitamins, some water)

35
Q

What factors affect the rate of simple diffusion?

A
  1. Magnitude of the driving force
  2. Membrane surface area
  3. Membrane permeability
36
Q

Is there saturation during simple diffusion?

A

No

37
Q

Does a l__arger or smaller surface area increases simple diffusion rate?

A

Larger

38
Q

How does Facilitated Diffusion work?

A

Carrier protein binds to a molecule

Protein changes shape

Protein deposits molecule across membrane

39
Q

Does the transport protein in facilitated diffusion work against or with the concentration gradient?

A

With the concentration gradient

40
Q

Factors affecting rate of facilitated diffusion

A

Rate of transport of each carrier

Number of carriers

Concentration of molecules

41
Q

Does saturation occur during facilitated diffusion?

A

Yes

42
Q

How does diffusion through channels work?

A

Pores that are substance specific stay open to allow substance to move to lower concentration gradient

43
Q

What are the 2 types of diffusion channels?

A

Water channels

Ion channels

44
Q

What types of ion channels are there?

A

Leak channels

Gated channels

  • ligand-gated
  • voltage-gated
45
Q

Water moves down a concentration gradient from

_____ water concentration to ____ water concentration

A

High

Low

46
Q

Water moves down a concentration gradient from

_____ solute concentration to ____ solute concentration

A

Low

High

47
Q

Water moves down a concentration gradient from

_____ osmolarity to ____ osmolarity

A

Low

High

48
Q

Osmolarity is what?

A

The total concentration of solute particles in a solution

49
Q

1 molar glucose solution?

A

1 M glu x 1 particle

= 1 osmol

50
Q

0.1 M NaCl solution has an osmolarity of?

A

0.1 M NaCl x 2 particles (Na+ & Cl-)

=0.2 osmoles

Biol 2420 SLCC (7 decks)

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