Brainscape's Knowledge GenomeTM

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


See full index

Nursing: A&P > Cell Physiology > Flashcards

Cell Physiology Flashcards

You may prefer our related Brainscape-certified flashcards:
Nursing Mental Health flashcards Nursing Management of Care flashcards NCLEX-PN® flashcards NCLEX-RN® flashcards Nursing Fundamentals flashcards Nursing Pediatrics flashcards Nursing Safety & Infection flashcards Nursing Pharmacology flashcards Nursing Maternity flashcards Family Nurse Practitioner (FNP) flashcards
1
Q

Selective Permeability

A

Excludes:
- Proteins, nucleic acids, large molecules, structural molecules
Allows:
- Small molecules, lipid soluble substances
- Ions and water via channels

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

Simple Diffusion

A

-water via water channels, small uncharged molecules, lipid-soluble substances
Ex: Osmosis
movement of water

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

Carrier Mediated Transport

A

-Active Transport
-Facilitated Diffusion

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

Passive Processes

A

-Move down the gradient
-No ATP/energy needed
-ex: diffusion, osmosis, facilitated diffusion

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

Active Processes

A

-against gradient
-requires energy/ATP
-carrier proteins

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

Which of the following processes requires ATP?
a. simple diffusion
b. facilitated diffusion
c. active transport
d. more than one of the above

A

c. active transport

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

Which of the following is a passive process?
a. diffusion
b. facilitated diffusion
c. osmosis
d. all of the above

A

d. all of the above

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

Characteristics that affect diffusion rate

A

temperature
concentration gradient
molecular weight
surface area
membrane permeability

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

How does Temperature affect diffusion rate?

A

Temperature increase = diffusion rate increases

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

How does molecular weight affect diffusion rate?

A

Molecular weight increase = diffusion weight decrease

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

How does membrane permeability affect diffusion rate?

A

Membrane permeability increase = diffusion rate increase

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

How does membrane surface area affect diffusion rate?

A

Membrane surface area increase = diffusion rate increase

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

How does concentration gradient affect diffusion rate?

A

Concentration gradient increase = diffusion rate increase

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

What makes up a solution?

A

A mixture of solute and solvent

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

What is the universal solvent?

A

Water

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

What is a solute?

A

Whatever dissolves in the solvent (water)

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

A solute is always in….

A

constant motion and the rate depends on heat

18
Q

The goal of a concentration is….

A

-Equilibrium
-Net diffusion/Net movement
-Moves from high to low

19
Q

What makes an area in the body made for diffusion?

A

often folded or contain microvilli

20
Q

All of the following increase the rate of diffusion EXCEPT
a. increasing the concentration gradient
b. increasing the temperature
c. increasing the membrane surface area
d. increasing the diffusion distance or barrier

A

d. increasing the diffusion distance or barrier

21
Q

What molecules does the Lipid Bilayer diffuse?

A
  • oxygen, CO2, steroid hormones, alcohol, some drugs and water via aquaporins
22
Q

How do molecules that cannot diffuse get across?

A

-Carrier Proteins
-Ion Channels

23
Q

What are Gated Channels?

A

Certain stimuli regulate opening of the channels

24
Q

What stimuli opens the Gated Channels?

A

Ligand binding, mechanical stretch, change in membrane voltage

25
Q

What are Ligand binding, Mechanical stretch, and a change in membrane voltage all examples of?

A

Neurotransmitters

26
Q

What is Osmosis?

A

Net diffusion of water via aquaporins

27
Q

osmosis

A

concentration gradient of solute?

28
Q

How does water concentration move?

A

from higher to lower concentration

29
Q

What is Osmotic Pressure?

A

Indicates the strength of the solution to “draw” water

30
Q

What makes osmotic pressure to increase?

A

an increase of solute concentration

31
Q

Plasma proteins decline/increase are equal to what in osmotic pressure

A

defines osmotic pressure

32
Q

Low plasma proteins and low osmotic pressure cause what?

A

bloods ability to hold water decreases and it goes to interstitial fluid

33
Q

what drives the movement of water

A

solute concentration

34
Q

how does solute drive water movement?

A

water goes to where the solute is highest

35
Q

what is molarity?

A

1 mole of solute per a liter of solution

36
Q

what is molality?

A

1 mole of solute per a Kg of water

37
Q

what is osmolarity?

A

molarity X #dissociable ions

38
Q

given the solution listed below, which of these has the greatest osmotic pressure?
a. 100 millimolar sodium chloride
b. 400 millimolar glucose
c. 300 millimolar sodium chloride
d. 500 millimolar dextrose

A

b. 400 millimolar glucose

39
Q

what is tonicity?

A
40
Q

What is an isotonic solution?

A
41
Q

what is a hypertonic solution?

A
42
Q

what is a hypotonic solution?

A

Nursing: A&P (1 decks)

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