9.2 bio

Question 1

simple diffusion

Answer 1

movement of molecules form high concentration to low concentration, in simple diffusion, molecules move directly over the phospholipid bi layer.

Question 2

facilitated diffusion

Answer 2

Molecules move across the membrane with help of proteins.

Question 3

osmosis

Answer 3

Diffusion of water across a semi-permeable membrane to dilute high solute concentrations

Question 4

endocytosis

Answer 4

the taking in of matter by a living cell by invagination of its membrane to form a vacuole.

Question 5

active transport

Question 6

exocytosis

Answer 6

a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.

Question 7

surface area:volume

Answer 7

it dictates the efficiency of a cell’s or organism’s ability to exchange materials (nutrients, oxygen, waste) with its environment, with a higher ratio generally meaning faster exchange.