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general biology i > CELL TRANSPORT MECHANISMS > Flashcards

CELL TRANSPORT MECHANISMS Flashcards

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AP® Biology flashcards
1
Q

movement of solute from higher to lower concentration

A

diffusion

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2
Q

stable 2-layer sheet of phospholipid

A

phospholipid bilayer

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3
Q

in the phospholipid bilayer, hydrophilic heads face __________ and tails __________

A

outward, inward

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4
Q

forms boundary between living cells and surroundings

A

plasma membrane

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5
Q

the act of allowing some substances to pass more freely than others

A

selective permeability

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6
Q

Why is the fluid mosaic model called a “mosaic”?

A

it looks like a mosaic in the form of diverse protein molecules embedded in a framework of phospholipids

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7
Q

performs most functions of membrane

A

proteins

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8
Q

attachment of membrane to cytoskeleton and fibers

A

membrane proteins

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9
Q

Cell Transport Types (2)

A
  1. Passive
  2. Active
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10
Q

more concentrated to side with less concentration

A

passive transport

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11
Q

more concentrated to side with more concentration

A

active transport

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12
Q

molecules move back and forth

A

equilibrium

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13
Q

passive transport of water

A

osmosis

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14
Q

diffusion of water molecules

A

osmosis

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15
Q

solution with high solute concentration

A

hypertonic

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16
Q

solution with low solute concentration

A

hypotonic

17
Q

solution with equal solute concentration

A

isotonic

18
Q

isotonic in animal cells

A

normal

19
Q

isotonic in plant cells

A

wilted / flaccid

20
Q

hypotonic in animal cells

A

lysed / bursts

21
Q

hypotonic in plant cells

A

swollen / turgid

22
Q

hypertonic in animal cells

A

shrivel

23
Q

hypertonic in plant cells

A

shrivel

24
Q

Facilitated diffusion is a type of __________ transport.

A

passive

25
Q

Facilitated diffusion rate depends on __________ and __________.

A

of transport proteins, speed of solute

26
Q

higher -> lower concentration

A

passive transport

27
Q

lower -> higher concentration

A

active transport

28
Q
  • requires cell expenditure
  • membrane proteins use ATP
A

active transport

29
Q

cell takes in macromolecules from plasma membrane

A

endocytosis

30
Q

filled with macromolecules that fuse to spill out macromolecules

A

exocytosis

31
Q

Exocytosis and endocytosis’ main purposes are to __________.

A

transport large molecules

32
Q

The Types of Endocytosis (3)

A
  1. Phagocytosis
  2. Pinocytosis
  3. Receptor-mediated
33
Q

cellular eating

A

phagocytosis

34
Q

cellular drinking

A

pinocytosis

35
Q
  • intended to form a pit
  • highly specific
A

receptor-mediated endocytosis

general biology i (5 decks)

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