cell cycle1

Question 1

what are the two step process of cell division

Answer 1

division of the nucleus
division of the cytoplasm

Question 2

wht are the two types of ell division

Answer 2

mitosis
meiosis

Question 3

what does mitosis produce

Answer 3

2 genetically identical diploid daughter cells

Question 4

wht does meiosis prodcue

Answer 4

4 genetically distinct haploid daughter cells

Question 5

what are the two stages mitotic cell division is divided into

Answer 5

s phase (10-12 hrs)

m phase (<60mins)

Question 6

what is m phase divided into

Answer 6

nuclear division karyokinesis

cytokinesis

Question 7

what are the m phase and s phase seperated by

Answer 7

2 g phases

Question 8

what are the role of g phases

Answer 8

Provides time for growth and to double protein mass
Prevents entry into mitosis if extracellular conditions are bad

Question 9

what is the length of g1 altered by

Answer 9

extracellilar signals

Question 10

wht phases comibine to form interphase

Answer 10

g1 g2 s phase

lasts 23 hrs

Question 11

what happens in s pahse

Answer 11

dna replication

Question 12

how is gene amplification avoided

Answer 12

by splitting dna replication in two

Question 13

whats the proess through which dna replication is split in two**

confusing watch tut

Answer 13

DNA helicase binds during late mitosis/early G1 to form the pre-replicative complex (preRC)
The preRC is activated in S-phase and the next preRC cannot bind until after M-phase