chapter 5

Question 1

facilitated diffusion is apart of which type of transport

Answer 1

passive transport

Question 2

sodium potassium pumps move what?

Answer 2

3 Na+ out
2 K+ in
(more positive charged out which makes it more negative)

Question 3

which of the following cell structures exhibits selectively permeability between a cell and its external environment?
lysosomes, chloroplasts, mitochondria, the plasma membrane, endoplasmic reticulum

Answer 3

plasma membrane

Question 4

what does the fluid aspect of the fluid mosaic reference?

Answer 4

the lateral rotational movement of phospholipids

Question 5

what accounts for the mosaic part of the fluid mosaic?

Answer 5

embedded proteins

Question 6

membrane carbohydrates primarily function in what?

Answer 6

cell-cell recognition

Question 7

is glucose a polar or non polar molecule?

Answer 7

polar

Question 8

which molecules have the easiest time passively diffusing across a membrane?

Answer 8

small, hydrophobic molecules

Question 9

in which direction does passive transport normally occur

Answer 9

passive transport can occur in either direction

Question 10

how does the net movement of the population of solute occur

Answer 10

down the concentration gradient

Question 11

diffusion

Answer 11

the tendency of molecules to spread out in available spaces. A substance will diffuse from an area of higher concentration to an area of lower concentration without energy input

Question 12

does diffusion require energy

Answer 12

no, natural flow

Question 13

where does facilitated diffusion occur?

Answer 13

through channels or transport proteins in the membrane

Question 14

does facilitated diffusion require energy?

Answer 14

no it only requires a concentration gradient

Question 15

endocytosis

Answer 15

the procedure that cells use to import large molecules across their plasma membrane

Question 16

pinocytosis

Answer 16

the uptake of liquid and the solutes dissolved in the liquid

Question 17

protein kinase

Answer 17

transfers a phosphate group from ATP to a protein

Question 18

the general name for an enzyme that transfers phosphate groups from ATP to a protein is

Answer 18

protein kinase

Question 19

passive transport

Answer 19

substance diffuses down its own concentration gradient, no energy needed, includes facilitated diffusion

Question 20

active transport

Answer 20

against the gradient, requires energy, includes ion pumps and cotransporters

Question 21

bulk transport

Answer 21

includes exocytosis and endocytosis

Question 22

hypotonic solution

Answer 22

less solute concentration outside the cell

Question 23

do hypotonic solutions gain or lose water?

Answer 23

gain

Question 24

what is the scientific term for a cell that bursts?

Answer 24

lysed

Question 25

hypertonic solution

Answer 25

greater solute concentration outside the cell

Question 26

does a hypertonic gain or lose water?

Answer 26

lose

Question 27

turgid

Answer 27

hypotonic

Question 28

plasmolyzed

Answer 28

hypertonic

Question 29

channel proteinshydrophillic channels that certain molecules or ions can use as a tunnel

Answer 29

channel proteins

Question 30

bind to molecules and change shape to shuttle them across the membrane

Answer 30

carrier proteins

Question 31

what essentially occurs in a sodium potassium pump?

Answer 31

3 Na out

2 K in

Question 32

what are the 3 steps of cell signaling?

Answer 32

Reception
Transduction
Response

Question 33

stimulates breakdown of the glycogen within the liver cells and skeletal muscle cells

Answer 33

hormone epinephrine