Ch 4 - The Cell in Action

Question 1

osmosis

Answer 1

the diffusion of water through a semipermeable membrane

Question 2

passive transport

Answer 2

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

Question 3

active transport

Answer 3

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

Question 4

endocytosis

Answer 4

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

Question 5

exocytosis

Answer 5

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

Question 6

photosynthesis

Answer 6

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

Question 7

cellular respiration

Answer 7

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

Question 8

fermentation

Answer 8

the breakdown of food without the use of oxygen

Question 9

cell cycle

Answer 9

the life cycle of a cell

Question 10

chromosome

Answer 10

one of the structures in the nucleus that are kade up

Question 11

homologous chromosomes

Answer 11

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

Question 12

mitosis

Answer 12

a process of cell division that forms two nuclei, each of which has the same number of chromosomes.

Question 13

cytokinesis

Answer 13

the division of the cytoplasm of a cell

Question 14

diffusion

Answer 14

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