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biology 1 pre AP > cell membrane test 4 > Flashcards

cell membrane test 4 Flashcards

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1
Q

phospholipid function

A

maintain barrier between the cell and its external enviroment

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2
Q

parts of phospholipid

A

a polar hydrophillic head and non polar hydro phobic tails

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3
Q

what is a peripheral protein

A

attaches to integral protein or lipids bilayer and is not embedded

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4
Q

what s the function of a peripheral protein

A

cell to cell communication

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5
Q

what are intergral proteins

A

proteins that are emmbedded into the cell membrane

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6
Q

what are examples of integral proteins

A

any transport proteins

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7
Q

what are channel proteins

A

a protein that helps molecules pass through

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8
Q

what type of transport is channel protein

A

facilitated diffusion

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9
Q

does the use of channel proteins require energy

A

no

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10
Q

what are carrier proteins

A

a protein that helps move thing in and out of the cell with energy

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11
Q

what is needed for a carrier protein

A

atp

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12
Q

what is a glycoprotein

A

protein with a carb attached

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13
Q

what are the functions of glycoprotein

A

transport, cell attechement, regognition , lubricant and protective agent

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14
Q

where does the carb of the glycoprotein go

A

on the outside

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15
Q

what is an isotonic solution

A

a solution with the same concentration inside and outside the cell

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16
Q

how does water flow with a cell in a isotonic solution

A

it flows evenly in and out

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17
Q

what is a plant cell inside an isotonic solution

A

flacid

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18
Q

what is a hypertonic solution

A

a solution with a higheer concentration outside than inside the cell

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19
Q

how does water flow insdie the cell with an hypertonic solution

A

it flows out of the cell

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20
Q

what would happen to a cell in aq hypertonic solution

A

the cell membrane would shrink and shrivel

21
Q

where is water or solution stored in a plant

A

central vacuole

22
Q

what is a plant cell in a hypertonic solution

A

plasmalyzed

23
Q

what is a hypotonic solution

A

a solution that has a lower concentration of solutes than inside the cell

24
Q

where does water flow in an hypottonic solution

A

it flows inside the cell

25
Q

what happens when a lot of water flows into a animal cell

A

the membrane ruptures and the cell lyses

26
Q

what heppens when a lot of water flows into the plant cell

A

it dosent lyse but it expands a little and the central vacuole expands

27
Q

why dosent a plant cell lyse with too much water

A

cell wall

28
Q

what is a plant cell with a hypotonic solution

A

turgid

29
Q

what is diffusion

A

movement of solutes for high to low concentration

30
Q

does diffusion re quire energy

A

no

31
Q

what molecues can diffuse

A

oxygen and carbon dioxide etc

32
Q

what is osmosis

A

movement of water from high to low concentration

33
Q

what is the universal solvent

A

water

34
Q

what does water follow in osmosis

A

the higher concentration of solutes

35
Q

what is facilitated diffusion

A

movement of larger molecules from high to low concentration with a membrane protein

36
Q

does facilitated diffusion require energy

A

no

37
Q

why cant most proteins pass through membrane

A

they are too large

38
Q

how to amino acids pass through the membrane

A

with help from channel protein

39
Q

how do carbs pass through the membrane

A

the monomer can but not the polymers

40
Q

what are two variables for membrane travel

A

size and concentration

41
Q

what is active transport

A

movement of molecules from low to high concentraion witha membrane protein

42
Q

what does active transport require

A

energy

43
Q

how does alt enter or exit a cell

A

protein

44
Q

how does glucose enter and exit the cell

A

chennel protein

45
Q

what does more solutes mean

A

lower amount of water

46
Q

how many layers of phospholipids are there

A

2

47
Q

how does the pracrmecium retain homeostasis

A

pumps out water

48
Q

what type of solution is the paramecium pumping

A

hypotonic

49
Q

what doe sthe contractile vacuole do

A

pump water os it does not lyse

biology 1 pre AP (10 decks)

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