L- 3 cell membrane

Question 1

another name for cell membrane

Answer 1

cell membrane
plasmalemma

Question 2

whats the cell membrane

Answer 2

defines the boundary of the cell and is made of phospholipids, protein and cholesterol

Question 3

plasma membrane proteins
integral
peripheral

Answer 3

integral = tightly associated
peripheral = loosely associated

Question 4

cholesterol

Answer 4

makes membrane more fluid and less permeable to small hydrophilic molecules

Question 5

function cell membrane

Answer 5

regulates movement of material in and out of cell facilitating electrical and chemical signalling between cells

Question 6

passive transport

Answer 6

Small hydrophobic solutes pass across biological membranes by simple gradient diffusion ( carbon dioxide)
small hydrophilic (charged-polar) ions and solutes cannot cross the membrane by diffusion and move through osmosis (Na+)

Question 7

exocytosis

Answer 7

type of ‘bulk’ active transport in which materials are transported from inside-out the cell in membrane-bound vesicles that fuse with the plasmalemma

Question 8

endocytosis

Answer 8

a type of active transport that moves particles, such as large molecules, parts of cells, and even whole cells, into a cell

Question 9

bulk transport

Answer 9

large particles are moved across cell membrane via end/exo-cytosis

Question 10

active transport

Answer 10

ATP is needed
cross membrane against a gradient

Question 11

pinocytosis

Answer 11

fluids containing small solutes

Question 12

phagocytosis

Answer 12

cell engulfs particles
ingestion of solid food particles

Question 13

HIV

Answer 13

human immunodeficiency virus
you can develop AIDS
HIV interfere with the bodys ability to fight infection

Question 14

AIDS

Answer 14

Acquired immunodeficiency syndrome
AIDS induces a highly weakened immune system prone to opportunistic infection