Cell Membrane Study Guide

Question 1

Movement of from high to low concentration ( no molecules energy and no carrier protein)

Answer 1

Diffusion

Question 2

The difference in concentration between two regions

Answer 2

concentration gradient

Question 3

the solid that is dissolved in a solution

Answer 3

solute

Question 4

the liquid that dissolves the solute in a solution

Answer 4

solvent

Question 5

the pressure of water moving across membranes caused by a concentration gradient

Answer 5

osmotic pressure

Question 6

solution that has the same concentration of solute as the cells it surrounds

Answer 6

isotonic solution

Question 7

solution that has greater concentration of solute vs. in the cell (will lose water and shrink)

Answer 7

Hypertonic solution

Question 8

solution that has lesser concentration of solute vs. in the cell (will gain water and may lysis)

Answer 8

Hypotonic solution

Question 9

shrinking of a plant cell (witting) due to being placed in a hypertonic solution

Answer 9

Plasmolysis

Question 10

Hydrostatic pressure due to a plant cell being placed in a hypotonic solution. Is the pressure on inside of the plant cell against the cell wall.

Answer 10

Tugor pressure

Question 11

Type of transport that goes with the concentration gradient (high to low) needs a carrier protein but does not require energy

Answer 11

Facilitated Transport

Question 12

shrinking of animal cells placed in hypertonic solutions

Answer 12

crenation

Question 13

type of transport that goes from low to high and needs both a carrier protein and energy

Answer 13

Active Transport

Question 14

cells bringing in materials by cell membrane forming vesicle around substance

Answer 14

endocytosis

Question 15

endocytosis of large particles (large enough to be seen with light microscope)

Answer 15

Phagocytosis

Question 16

“Cell drinking”- endocytosis of small particles (i.e. an electron microscope is needed)

Answer 16

Pinocytosis

Question 17

Vesicle inside cell fuses with cell membrane, depositing contents on the outside

Answer 17

Exocytosis

Question 18

carbohydrate attacked to phospholipid on cell membrane. often serves in cell identification and communication

Answer 18

Glycolipid

Question 19

Current model of membrane structure. A phospholipid fluid sea is embedded with a wide variety (mosaic) of protein molecules

Answer 19

Fluid mosaic model

Question 20

movement of water from high to low concentration

Answer 20

osmosis

Question 21

a cell is isotonic to a solution of 0.01 % sugar. What concentration would be hypertonic?

Answer 21

> 0.01 %

Question 22

A cell is isotonic to a solution of 0.01 % sugar. What concentration would be hypotonic?

Answer 22

<0.01 %

Question 23

If a cell uses active transport to take in salts, what will follow the salt ad also enter the cell

Answer 23

water