Ch. 2 The Cell in Action

Question 1

diffusion

Answer 1

the movement of particles from regions of higher density to regions of lower density

Question 2

osmosis

Answer 2

the diffusion of water through a semipermeable membrane

Question 3

passive transport

Answer 3

the movement of substances across a cell membrane without the use of energy by the cell

Question 4

active transport

Answer 4

the movement of substances across the cell membrane that requires the cell to use energy

Question 5

endocytosis

Answer 5

the process by which a cell membrane surrounds a particle and encloses it in a vesicle to bring the particle into the cell

Question 6

exocytosis

Answer 6

the process in which a cell releases a particle by enclosing the particle in a vesicle that then moves to the cells surface and fuses with the cell membrane

Question 7

photosynthesis

Answer 7

the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to make food

Question 8

cellular respiration

Answer 8

the process by which plants use oxygen to produce energy from food

Question 9

fermentation

Answer 9

the breakdown of food without the use of oxygen