Bio Ch 4 Vocab

Question 1

fluid-mosaic model

Answer 1

the proteins are scattered either just outside or within the membrane, forming a mosaic pattern

Question 2

glycolipids & glycoproteins

Answer 2

qwhen phospholipids or proteins can have attached carbohydrates

Question 3

channel proteins

Answer 3

involved in passage of molecules through the membrane

Question 4

carrier proteins

Answer 4

involved in passage of molecules through the membrane

Question 5

cell recognition proteins

Answer 5

glycoproteins

Question 6

receptor proteins

Answer 6

have a shape that allows it to bend

Question 7

enzymatic proteins

Answer 7

carry out metabolic reactions directly

Question 8

differentially permeable

Answer 8

certain substances can move across while others cannot

Question 9

concentration gradient

Answer 9

concentration is high–>low

Question 10

diffusion

Answer 10

movement of molecules from a higher to lower concentration

Question 11

solvent

Answer 11

dissolvable

Question 12

isotonic solutions

Answer 12

solute concentration and water concentratoin both inside and outside cell are equal; no loss of water

Question 13

hypotonic solutions

Answer 13

solutions that cause cells to swell/burst due to intake of H2O

Question 14

osmotic pressure

Answer 14

pressure that develops in a system due to osmosis

Question 15

cytoliysis

Answer 15

disrupted cells

Question 16

turgor pressure

Answer 16

swelling of plant cells

Question 17

hypertonic solution

Answer 17

solutions that cause cells to shrink due to loss of water

Question 18

crenation

Answer 18

shriveling of the cell in hypertonic solution

Question 19

plasmolysis

Answer 19

shrinking of cytoplasm due to osmosis

Question 20

facilitated transport

Answer 20

passage of glucose and amino acids

Question 21

active transport

Answer 21

molecules/ions move through plasma membrane, accumulating both sides