Brainscape's Knowledge GenomeTM

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


See full index

biology I > cellular transport > Flashcards

cellular transport Flashcards

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

what part of the cell controls what enters and leaves the cell?

A

cell membrane

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

cells transport materials in and out in order to maintain an internal balance, which is also known as ______?

A

homeostasis

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

what is the main component of the cell membrane?

A

phospholipids

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

what are the two parts of the cell membrane?

A

phosphate heads and fatty acid tails

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

what are the channels/pumps throughout the cell membrane made of?

A

proteins

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

what category of cell transport does not require any energy?

A

passive transport

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

what category of cell transport can only occur with the input of ATP energy?

A

active energy

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

what direction does passive transport move molecules?

A

along the concentration gradient

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

passive transport moves substances from _______ to _______ concentrations

A

high to low

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

what direction does active transport move molecules?

A

against the concentration gradient

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

active transport moves substances from ______ to _________ concentrations

A

low to high

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

what are three types of passive transport

A

facilitated diffusion, (simple) diffusion, osmosis

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

what are three types of active transport?

A

protein pump, endocytosis, exocytosis

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

what is the difference between simple diffusion and facilitated diffusion?

A

facilitated diffusion requires energy and (simple) diffusion does not

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

what does osmosis do?

A

moves water

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

facilitated diffusion and protein pumps both use proteins. what is the main difference between the two?

A

protein pumps requires energy but energy is not required for protein pumps

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

what is the difference between endocytosis and exocytosis?

A

endocytosis moves into the cell, exocytosis moves out of the cells.

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

water always moves to where there is more _____?

A

solute

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

the area with the higher solute concentration is known as ____?

A

hypertonic

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

the area with the lower solute concentration is known as ____?

A

hypotonic

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

what do water molecules do if a cell is placed in a hypertonic solution?

A

move out of the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what will happen to the size of a cell that is placed in a hypertonic solution?

A

it will shrink

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what do water molecules do if a cell is placed in a hypotonic solution?

A

go into the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what will happen to the size of a cell that is placed in a hypotonic solution?

A

it will swell (or burst)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what do water molecules do if a cell is placed in an isotonic solution?

A

they move in and out at equal rates (nothing changes)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

large wastes or cell products are released fro inside to outside the cell

A

exocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

diffusion of water molecules through a selectively permeable membrane

A

osmosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

the transport of particles which requires the use of energy

A

active transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

a state reached when particles continue to move but in equal amounts in and out of the cell

A

dynamic equilibrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

large particles are surrounded by the membrane and taken into the cell

A

endocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

movement of any particles from an area of higher concentration to one of lower concentration, with the concentration gradient

A

diffusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

the transport of particles which does not require energy

A

passive transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

the structure most responsible for maintaining cell homeostasis is the ____.

A

plasma (cell) membrane

34
Q

the plasma (cell) membrane is made up of a ________.

A

phospholipid bilayer

35
Q

diffusion continues until _____________.

A

equilibrium is reached

36
Q

if a cell is placed in salt water, water leaves the cell by ________.

A

osmosis

37
Q

a cell moves particles from a region of low concentration to a region of high concentration by ________________.

A

active transport

38
Q

keeping a stable enviornment inside of the cell

A

homeostasis

39
Q

very important structure that all cells contain; controls what goes in and out, which helps maintain homeostasis

A

cell membrane

40
Q

what is the cell membrane made of?

A

phospholipid bilayer (2 layers)

41
Q

is phospholipid head polar or nonpolar?

A

polar

42
Q

is the phospholipid tails (2 tails) polar or nonpolar?

A

nonpolar

43
Q

what type of transport requires no energy?

A

passive transport

44
Q

what type of transport requires energy? (ATP)

A

active energy

45
Q

simple diffusion moves with the ______________________.

A

concentration gradient

46
Q

molecules move from a high concentration to a low concentration in this process

A

simple diffusion

47
Q

proteins that are embedded in the cell membrane

A

transport proteins

48
Q

what do transport proteins do?

A

they help with molecules that may be to big to cross the cell membrane on their own

49
Q

no energy or help from proteins is required to move small molecules in this kind of transport

A

(simple) diffusion

50
Q

proteins must help large molecules such as sugar and fat pass through the membrane, but no energy is needed

A

facilitated diffusion

51
Q

there is a higher concentration of salt outside the cell than inside. (salt comes into the cell without help from proteins)

A

(simple) diffusion

52
Q

energy is needed to help move substances into the cell

A

active transport

53
Q

water moves into the cell through this process

A

osmosis

54
Q

there is a higher concentration of a substance inside the cell than outside, but the cell continues to bring it inside anyways

A

active transport

55
Q

which part of the cell is most responsible for maintaining homeostasis?

A

cell membrane

56
Q

which category of transport does not require energy?

A

passive transport

57
Q

which category of transport requires energy?

A

active transport

58
Q

molecules move from a __________ to a ______________ concentration in passive transport.

A

high to low

59
Q

molecules move from a ___________ to a __________ concentration in active transport.

A

low to high

60
Q

the three types of passive transport:

A
  1. (simple) diffusion
  2. facilitated diffusion
  3. osmosis
61
Q

active transport that brings very large molecules into the cell

A

endocytosis

62
Q

active transport that moves very large molecules out of the cell

A

exocytosis

63
Q

this is a description of the cell membrane that means it lets some things in while keeping other things out

A

selectively permeable

64
Q

term that means a stable internal balance

A

homeostasis

65
Q

what the cell membrane is made of (means 2 layers)

A

phospholipid bilayer

66
Q

part of a phospholipid that is polar/water loving

A

head

67
Q

part of a phospholipid that is non-polar/water hating

A

tail

68
Q

type of transport that moves larger molecules from high to low concentrations, but requires the assistance of transport proteins

A

facilitated diffusion

69
Q

type of passive transport that moves water molecules through the cell membrane

A

osmosis

70
Q

type of transport that moves small, nonpolar molecules through the phospholipid bilayer from a high concentration to a low concentration without transport proteins

A

(simple) diffusion

71
Q

type of energy that is required for active transport to occur

A

ATP energy

72
Q

is osmosis, water moves to the ____________ side

A

hypertonic

73
Q

if red blood cells are exposed to a hypotonic solution, they will _______

A

swell

74
Q

the best solution for a person’s IV is a solution that is ____________ to their blood plasma

A

isotonic

75
Q

higher amount of solute, lower amount of water

A

hypertonic

76
Q

lower amount of solute, higher amount of water

A

hypotonic

77
Q

solute concentrations inside and outside are the same

A

isotonic

78
Q

water molecules move to a higher concentration of ____________

A

solute

79
Q

water molecules move to a lower concentration of _________

A

water

80
Q

water always move from the ____________ area to the ___________ area

A

hypotonic to hypertonic

biology I (4 decks)

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