B2 cell division

Question 1

why is mitotic cell division important

Answer 1

the growth, repair and development of multicellular organisms

Question 2

cell cycle

Answer 2

Dna replicated
two copies of each chromosome formed
set of chromosomes pulled to each end of the cell
nucleus divides
cytoplasm and cell membrane divide
two identical cells formed

Question 3

where does mitosis take place in plant cells

Answer 3

throughout the life of the plant in the meristems

found in shoot and root tips

Question 4

when do animal cells differentiate

Answer 4

at an early stage of development

Question 5

what cells can be cloned for differentiation

Answer 5

embryonic stem cells

adult stem cells

Question 6

uses of plant stem cells

Answer 6

production of plant clones quickly and economically
research
horticulture
agriculture

Question 7

benefit of embryonic stem cells

Answer 7

produced with the same genes
so stem cells are not rejected
may be used for medical treatment

Question 8

stem cell dilemmas

Answer 8

has some potential risks

ethical or religious objections

Question 9

binary fission process

Answer 9

The two circular strands of DNA move to opposite sides of the cell
A new cell wall from down the middle of the cell
The two halves pull apart to form two cells
not genetically identical

Question 10

binary fission eq

Answer 10

starting population x 2^number of division cycles in given time

Question 11

conditions for bacterial growth

Answer 11

warm
moist
lots of nutrients