2.1-2.3

Question 1

diffusion

Answer 1

the movement of particles from regions of higher density to 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 the substances across the cell membrane that requires the cell to use energy.

Question 5

endocytosis

Answer 5

the p.rocess by which a cell membrane surrounds a particle and encloses the particle 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 cell 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 cells use oxygen to produce energy from food

Question 9

fermentation

Answer 9

the breakdown of food without the use of oxygen

Question 10

cell cycle

Answer 10

the life cycle of a cell

Question 11

chromosomes

Answer 11

the DNA of a cell is organized into structures

Question 12

homologous chromosmes

Answer 12

chromosomes that have the same sequence of genes and the same structure

Question 13

mitosis

Answer 13

the complicated process of chromosomes seperation

Question 14

cytokinesis

Answer 14

the division of the cytoplasm of a cell