ch 8 part 1 review

Question 1

cell productio or reproduction of __________

Answer 1

gametes

Question 2

steps require for cell devision

Answer 2

1-make a copy of the DNA
2-give each new cell a copy of the DNA
3-divide the cytoplasm

Question 3

Different types of cell division:

Answer 3

prokaryotic via binary fission
eukaryotic by mitosis and meiosis

Question 4

mitosis

Answer 4

used by multicellular organism to for growth and to replace dying cells

Question 5

meiosis

Answer 5

type of cell division that produce gamete

Question 6

genome

Answer 6

1-all organism use DNA to store genetic info
2-total genetic info of cell or organism
3-DNA id packaged as double stranded DNA molecules such as
prokaryotic is single double stranded DNA molecules
eukaryotic several duble stranded linear DNA molecules

Question 7

linear or circular strand of DNA with specific sequense of base pair

Answer 7

chromosome

Question 8

chromosome in eukaryotic and prokaryotic

Answer 8

prokaryotic : have single circular bound to cell membrane
whereas eukaryotic : have linear bound to nucleus

Question 9

DNA bound and wrapped around protein __________

Answer 9

histones

Question 10

prokaryotic cell division is ____________
the steps are

Answer 10

binary fission

1-DNA replicate or cope of DNA’s cell
2-cells growth and seperation into two chromosome
3-cytokines to division the cytoplasm

Question 11

There are two types of cell division in eukaryotic

Answer 11

mitosis :
cells division in somatic or body cell
chromosome stays the same
meiosis :
cell division that gives rise to the gamete
chromosome number is cut in half

Question 12

eukaryotic dont do its job at once it needs ?

Answer 12

cell cycle

Question 13

the alteration of activites related to cel, division and those related to growth and metabolism

Answer 13

cell cycle

Question 14

eukaryotic cell cycle ?

Answer 14

1-gap primary growth
2-s phase DNA synthesize
3-gap 2 secondary growth
4-mitosis
5- cytokine

Question 15

somatic cell alternate between___________-, _____________

Answer 15

mitosis , interphase

Question 16

interphase

Answer 16

cells growth and prepare to divide
and lengh vary deponde on the type of cell
G1-GAP=intial preparition
Synthsize s =cell synthesize the exact duplicute of each chromosome
G2 GAP=final prepartion

Question 17

regulate the rate of cell division
group protein
check points

Answer 17

cell cycle control system

Question 18

check points

Answer 18

-allows response to change internal and external environment
-reduce the likehood of completing cell division when there is error
-points where the cell cycle can be halted