CELL TRANSPORT MECHANISMS

Question 1

movement of solute from higher to lower concentration

Answer 1

diffusion

Question 2

stable 2-layer sheet of phospholipid

Answer 2

phospholipid bilayer

Question 3

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

Answer 3

outward, inward

Question 4

forms boundary between living cells and surroundings

Answer 4

plasma membrane

Question 5

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

Answer 5

selective permeability

Question 6

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

Answer 6

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

Question 7

performs most functions of membrane

Answer 7

proteins

Question 8

attachment of membrane to cytoskeleton and fibers

Answer 8

membrane proteins

Question 9

Cell Transport Types (2)

Answer 9

1. Passive
2. Active

Question 10

more concentrated to side with less concentration

Answer 10

passive transport

Question 11

more concentrated to side with more concentration

Answer 11

active transport

Question 12

molecules move back and forth

Answer 12

equilibrium

Question 13

passive transport of water

Answer 13

osmosis

Question 14

diffusion of water molecules

Answer 14

osmosis

Question 15

solution with high solute concentration

Answer 15

hypertonic

Question 16

solution with low solute concentration

Answer 16

hypotonic

Question 17

solution with equal solute concentration

Answer 17

isotonic

Question 18

isotonic in animal cells

Answer 18

normal

Question 19

isotonic in plant cells

Answer 19

wilted / flaccid

Question 20

hypotonic in animal cells

Answer 20

lysed / bursts

Question 21

hypotonic in plant cells

Answer 21

swollen / turgid

Question 22

hypertonic in animal cells

Answer 22

shrivel

Question 23

hypertonic in plant cells

Answer 23

shrivel

Question 24

Facilitated diffusion is a type of __________ transport.

Answer 24

passive

Question 25

Facilitated diffusion rate depends on __________ and __________.

Answer 25

of transport proteins, speed of solute

Question 26

higher -> lower concentration

Answer 26

passive transport

Question 27

lower -> higher concentration

Answer 27

active transport

Question 28

- requires cell expenditure - membrane proteins use ATP

Answer 28

active transport

Question 29

cell takes in macromolecules from plasma membrane

Answer 29

endocytosis

Question 30

filled with macromolecules that fuse to spill out macromolecules

Answer 30

exocytosis

Question 31

Exocytosis and endocytosis' main purposes are to __________.

Answer 31

transport large molecules

Question 32

The Types of Endocytosis (3)

Answer 32

1. Phagocytosis 2. Pinocytosis 3. Receptor-mediated

Question 33

cellular eating

Answer 33

phagocytosis

Question 34

cellular drinking

Answer 34

pinocytosis

Question 35

- intended to form a pit - highly specific

Answer 35

receptor-mediated endocytosis