Cell Transport & Types of Solutions

Question 1

A

Answer 1

Phospholipid

Question 2

A₁

Answer 2

hydrophilic phosphate head

Question 3

A₂

Answer 3

hydrophobic lipid tail

Question 4

H-I

Answer 4

phospholipid bilayer

Question 5

G, F, C

Answer 5

Proteins

Question 6

What is the purpose of the cell membrane?

Answer 6

to control what enters and leaves the cell

Question 7

the cell membrane and fluid mosic model

Answer 7

the membrane is like a mosaic of protiens that can flow around like liquid

Question 8

hydrophobic

Answer 8

fear of water

Question 9

hydrophilic

Answer 9

attracted to water

Question 10

homeostasis

Answer 10

maintaining equalibrium or stability within the internal enviornment when there’s external changes

Question 11

Why is the cell membrane selectively permeable?

Answer 11

The cell membrane is made of a phospholipid bilayer which prevents certain things from entering the cell.

Question 12

passive transport

Answer 12

movement of molecules across a membrane and requires no ATP

Question 13

three types of passive transport

Answer 13

osmosis

facilitated diffusion

difffusion

Question 14

osmosis

Answer 14

the passage of water across a membrane from an area of high concentration to an area of low concentration

passive

Question 15

solutes

Answer 15

things being dissolved

Question 16

solvents

Answer 16

the medium in which the solute is desolved

Question 17

hypertonic solution

Answer 17

higher concentration of solutes outside the cell

Question 18

How does a cell react in a hypertonic solution?

Answer 18

it shrinks due to the release of water to its surroundings

Question 19

hypotonic solution

Answer 19

lower concentration of solutes outside the cell

Question 20

How does a cell react in a hypotonic solution?

Answer 20

cell swells as it takes in water from its surroundings

Question 21

isotonic solution

Answer 21

equal concentration of solutes both inside and outside of the cell

Question 22

diffusion

Answer 22

when molecules move fom areas of high concentration to areas of low concentration

Question 23

How does temperature affect diffusion rate?

Answer 23

Higher temperatures increase diffusion rate because faster moving molecules have a better chance of getting across the membrane

Question 24

Concentration gradient

Answer 24

the difference between the concentration of a particular molecule in one area and that of an adjacent area

Question 25

facilitated diffusion

Answer 25

transports larger molecules passively with the help of carrier proteins

Question 26

active transport

Answer 26

transport of molecules from an area of lower concentration to an area of higher concentration uses ATP

Question 27

What does K⁺ and Na⁺ regulate in cells?

Answer 27

water and acid balance

Question 28

What happends to a cell if Na⁺ is not pumped out?

Answer 28

water will accumulate in cell and cell will burst

Question 29

endocytosis

Answer 29

transporting large amounts of material from outside the cell to the inside by vesicles

Question 30

pinocytosis

Answer 30

cell drinking

Question 31

phagocytosis

Answer 31

cell eating

Question 32

bulk transport

Answer 32

secretion and ejection of a large amount of substances active transport