Cell Permability

Question 1

Solutes

Answer 1

Dissolved in water

Question 2

Plasma membrane

Answer 2

Primary composed of lipids

Question 3

Hydrophobic

Answer 3

Dislikes water

Question 4

Selectively permeable

Answer 4

Allows some substances to freely pass the membrane

Question 5

Cholesterol (3)

Answer 5

Rigid ring lipid

Randomly distributed throughout hydrophobic region

Gives plasma membrane structural strength

Question 6

Carbohydrates chains(3)

Answer 6

Extend from outer surface

Attached to protein or phospholipid

Functions as a signal, coating, or receptor

Question 7

Extracellular enviroment 3

Answer 7

Outside of cell

Aqueous

Extracelluar fluid (ecf)

Question 8

Lipid bilayer (3)

Answer 8

Composed of 2 rows of phospholipids molecules

Phosphate group head faces outward

Fatty acid tail face inward

Question 9

Phosphate group head (3)

Answer 9

Part of phospholipid molecule

Contained phosphate group

Makes this portion of molecule polar and hydrophilic

Question 10

Fatty acid tails(3)

Answer 10

Part of phospholipid
Molecule

Tails consist of 2 fatty acid chains

Makes this portion of molecule nonpolar and hydrophobic

Question 11

Peripheral protein(2)

Answer 11

Doesn’t extend across lipid bilayer

May serve as an anchor point for cytoskeleton

Question 12

Transmembrane proteins(2)

Answer 12

Extend all the way through the lipid bilayer

May serve as a transport protein or a channel across the bilayer

Question 13

Cytoplasm(4)

Answer 13

Inside of cell

Aqueous

Contains organelle

Intracellular fluid(ICF)

Question 14

Diffusion

Answer 14

Solute move from area of high concentration to low concentration

Doesn’t require energy

Question 15

Passive transport

Answer 15

Require random collision or kinetic energy for the molecules to move through the solution

Question 16

Simple diffusion

Answer 16

Molecules are able to freely cross the cell membrane

Question 17

Facilitated diffusion

Answer 17

Molecules need assurance of a channel protein it transport protein to cross the cell membrane

Question 18

Osmosis

Answer 18

The diffusion of water

Question 19

Aquaporins

Answer 19

A channel water is able to freely pass through

Question 20

Hypotonic solution(3)

Answer 20

Lower solute concentration

Higher water (solvent) concentration

Net movement of water out of this side

RBC swells and potentially burst(lyse)

Question 21

Hypertonic solution(3)

Answer 21

Higher solute concentration
Lower water(solvent) concentration
Net movement of water toward this side

RBC crenates(shrivel)

Question 22

Isotonic

Answer 22

Equal solute and solvent concentration

Question 23

Osmotic pressure

Answer 23

The pressure generated within a cell as water presses against the plasma membrane

Question 24

Filtration

Answer 24

The separation of particles in a solution when pressure is applied to one side of the membrane

causes small particles to pass through membrane

Question 25

Filtrate

Answer 25

Small particles and fluid that pass through the membrane

Question 26

Hydrostatic pressure

Answer 26

When the pressure is exerted by water flow

Question 27

Filtration rate

Answer 27

The rate substances filter through a membrane

Question 28

Active transport

Answer 28

The energy needed to transport substances against a concentration gradient

Question 29

Vesicular transport

Answer 29

The process of moving large molecules and droplets of ECF across the plasma membrane

Question 30

Endocrine

Answer 30

The process of bringing substances inside cells

Question 31

Exocytosis

Answer 31

The release of material in a cell

Question 32

Phagocytosis

Answer 32

Cell eating The intake of large substances in a cell

Question 33

Pinocytosis

Answer 33

Cell drinking The uptake of small droplets of ECF

Question 34

I pop