Brainscape's Knowledge GenomeTM

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


See full index

Anatomy & Physiology > passive diffusion & active transport > Flashcards

passive diffusion & active transport Flashcards

1
Q

what are the 2 types of passive diffusion?

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

what is diffusion?

A

balancing # of molecules on both sides of a semi-permeable membrane

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

what is a solution?

A

substance that contains 1 or more molecules

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

what is a solvent?

A

the dissolving agent of the solute

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

what is a solute?

A

substance inside the cell that is dissolved into a solution, can be gas, liquid, or solid

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

solutes are also what?

A

molecules

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

what is an aqueous solution?

A

a solution where the solvent is water

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

in simple passive diffusion what concentration will the molecules move from?

A

high –> low concentration (moving down concentration gradient)

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

what is net diffusion?

A

when the flow of molecules in one direction is greater than the flow of molecules in the other direction

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

what is dynamic equilibrium?

A

the state of balance where solutes will continue moving at an equal rate

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

what type of diffusion is facilitated diffusion?

A

where proteins transports have to be used to transport polar molecules or ions (solutes)

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

what are the 2 types of protein transporters used in facilitated diffusion?

A
  1. channel proteins
  2. carrier proteins
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what are the 2 types of channel proteins in facilitated diffusion?

A
  1. simple channel protein
  2. gated channel protein
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is channel proteins in facilitated diffusion?

A

allows a certain solute to move from high –> low concentration by using a protein

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

what is a simple channel protein from facilitated diffusion?

A

simply allows for solutes to move through, no need for a stimulus

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

what is a gated channel protein from facilitated diffusion?

A

a gate for molecules/ions to go through, but can only be opened by an electrical stimulus or chemical

17
Q

what are carrier proteins in facilitated diffusion?

A

allows a specific solute to bind to a binding site

18
Q

what is extracellular fluid?

A

fluid on the outside of the cell

19
Q

what is intracellular fluid?

A

fluid on the inside of the cell

20
Q

when solutes pass through the membrane, does it save more energy to go through a transporter (facilitated diffusion) or without a transporter (diffusion)?

A

saves more Gibbs free energy to go through a transporter

21
Q

is energy required for a passive facilitated diffusion protein channel?

A

no

22
Q

what are the 2 types of active transport?

A
  1. primary
  2. secondary
23
Q

is energy needed for active transport?

A

yes, ATP is needed

24
Q

what is another term for concentration gradient?

A

electrochemical gradient

25
Q

what is a type of active primary protein channel?

A

sodium-potassium pump (ATPase)

26
Q

during active primary transport how is energy released?

A

by ATP hydrolysis which allows another solute to move against the gradient

27
Q

what are the 4 steps for active primary transport?

A
  1. solute bind to channel
  2. phosphate group is attached to the transporter
  3. ATP is used to flip the transporter
  4. solute is released
28
Q

what is the main part of active secondary transport?

A

a solute moving down the gradient will let out energy to power the transporter to allow another solute moving up the gradient

29
Q

what are the 3 types of active secondary transport?

A
  1. uniporter
  2. symporter
  3. antiporter
30
Q

what is the uniporter?

A

moving one type of solute up or down the gradient

31
Q

what is the symporter?

A

moves 2 or more molecules in the same direction

32
Q

what is the antiporter?

A

moves 2 or more molecules in opposite directions

33
Q

the symporter and antiporter are also what?

A

co-transporters because they transport 2 or more molecules

Anatomy & Physiology (15 decks)

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