Chapter 7-Personal Outline

Question 1

_________________ the plasma membrane exhibits this it allows some substances in and does not allow others

Answer 1

Selectively Permeability:

Question 2

______________: ex: phosophipid. Having both a hydrophobic and hydrophilic region.

Answer 2

Amphipathic

Question 3

________________: the arrangement of hydrophilic heads and hydrophobic tails so that a stable boundary of water can exist.

Answer 3

Phospholipid bilayer:

Question 4

• Functions of membrane proteins:

Answer 4

Transport
o	Enzymatic Activity 
o	Signal transduction 
o	Cell to Cell recognition 
o	Intercellular joining 
o	Attachment to cytoskeleton

Question 5

________________: the membrane is a mosaic of a protein molecule bobbing in a fluid bilayer of proteins.

Answer 5

Fluid mosaic model:

Question 6

______________: penetrate the hydrophobic interior of bilayer

Answer 6

Integral Proteins:

Question 7

________________ are not embound in lipid bilayer at all, they are losing throughout

Answer 7

Peripheral proteins:

Question 8

_________________: carbohydrate bonded to lipids

Answer 8

Glucolipids:

Question 9

________________ proteins and carbohydrates bonded together

Answer 9

Glycoproteins:

Question 10

_________________ hydrophilic substances that can avoid contact with lipid bilayer

Answer 10

Transport Proteins:

Question 11

______________: these proteins help with the transport of water molecules through the central cannels

Answer 11

Aquaporins

Question 12

_____________________: decreased salinity within the cell than outside

Answer 12

hyportonic

Question 13

_______________________: equal salinity in and out of the cell.

Answer 13

Isotonic:

Question 14

______________________: increased salinity within the cell than outside

Answer 14

Hypertonic:

Question 15

_______________: the movement of particles of any substance so that they spread out into the available space

Answer 15

Diffusion:

Question 16

____________: the region along which density of a chemical substance increase or decrease

Answer 16

Concertation gradient:

Question 17

_____________; the diffusion of substance across

Answer 17

Passive Transport:

Question 18

____________: the diffusion of water across the cells selectively permeable membrane from a high concentration to a low concentration.

Answer 18

Osmosis:

Question 19

___________________: the ability of a surrounding substance to gain or lose water

Answer 19

Tonicity:

Question 20

_________________ the control of the solutes concentrations and water balance.

Answer 20

Osmoregulation:

Question 21

________________ the cell is; it is a healthy state for most plant cells in which the cell opposes further water intake.

Answer 21

Turgid:

Question 22

______________; channels within the cell that transport ions.

Answer 22

Ion Channels:

Question 23

_______________: when molecules imped the phospholipid bilayer undergo this process.

Answer 23

Facilitated diffusion:

Question 24

____________: these open and close in response to stimuli.

Answer 24

Gated Channels:

Question 25

___________________: when energy is necessary to pump a solute across a membrane against the gradient. This requires work.

Answer 25

Active Transport:

Question 26

_____________: this causes the plant to wilt and can lead to plant death. It is when the cell loses to much water to its surroundings.

Answer 26

Plasmolysis:

Question 27

__________________________: the voltage across the membrane.

Answer 27

: Membrane Potential:

Question 28

____________: the combination of forces action on an ion during active transport.

Answer 28

Electrochemical Gradient:

Question 29

__________________________: a transport protein that generates a negative voltage across the membrane.

Answer 29

Electron Pump:

Question 30

_______________:m this maintains the voltage of a cell membrane.

Answer 30

Proton Pump:

Question 31

_______________: a transport protein can couple the downhill diffusion and uphill transport of a substance throughout the concentration gradient.

Answer 31

Cotransport: