Plasma Membrane

Question 1

membrane’s function

Answer 1

keeps structure/holds cell, takes in nutrients, build/exporting molecules, interacts with environment and cells

Question 2

peripheral proteins

Answer 2

either of membrane, provides support+transfer small molecules

Question 3

integral proteins

Answer 3

IN the membrane, transports proteins into cell

Question 4

membrane carbohydrates

Answer 4

hydrophilic, provides energy for the cell

Question 5

cholesterol

Answer 5

helps maintain fluidity, prevents phospholipids from solidifying or moving too much at temperatures

Question 6

tight junctions

Answer 6

water tight seal, very very tight

Question 7

desmosomes

Answer 7

fastens cells together like Velcro

Question 8

gap junctions

Answer 8

allows ions to get exchanged between cells

Question 9

selective permeability

Answer 9

some molecules pass, others cannot

Question 10

diffusion

Answer 10

higher concentration->lower concentration, no energy (simple is without assistance facilitated with)

Question 11

osmosis

Answer 11

water molecules move through aquaporins

Question 12

active transport

Answer 12

requires energy, moving through channels (primary is direct, secondary is using energy from other channel)

Question 13

endocytosis

Answer 13

absorb large particles, membrane engulfs and pinches off into vesicle to hold particle

Question 14

exocytosis

Answer 14

brings particle in vesicle to end of membrane, merges with membrane to release