Chapter 5.1

Question 1

Cell theory

Answer 1

all life is cellular, and that all cells arise from preexisting cells

Question 2

cell division

Answer 2

the process which preexisting cells generate more cells. underlies many important biological processes, like:

• the formation of gametes
• the dev. of an adult from an embryo
• the growth and repair of bodily tissues
• asexual reproduction

Question 3

sexual reproduction

Answer 3

formation of genetically unique offspring

Question 4

fertilization

Answer 4

the joining of gametes

Question 5

zygote

Answer 5

single cell formed by fertilization

Question 6

asexual reproproduction

Answer 6

the creation of a new individual by a lone parent without participation of sperm and egg

Question 7

binary fission

Answer 7

an organism’s single cell divides, creating two genetically identical offspring

Question 8

plant reproduction

Answer 8

reproduction asexually by sprouting

Question 9

regeneration

Answer 9

the regeneration of lost limbs

Question 10

The reason trillions of cells in the the body are genetically identical:

Answer 10

They all descended via cell division from a single original cell (the zygote)