the cell cycle

Question 1

what is stage 1?

Answer 1

dna replicates to form 2 copies of each chromosomes

Question 2

whats stage 2

Answer 2

one set of chromosome is pulled to each end of the cell and the nucleus divides (mitosis)

Question 3

whats stage 3:

Answer 3

cytoplasm and cell membrane divide too

Question 4

what is stem cells:

Answer 4

undifferentiated cell, able to make many cells of the same type through division and differenation

Question 5

whats therapeutic cloning

Answer 5

embryo is produce with the same gene as patient.

its not rejected by the patients body so may used for medical treatment

Question 6

advantages of theraputic cloning

Answer 6

could cure diseases (diabetes/ paralysis)
cells unlikely reject
cell and tissue of any type can be made
reduce time for transplant
many cells reproduced

Question 7

negative effects of theraputic cloning

Answer 7

potntial life killed
shortage of egg doner
may transfer viral infection
poor success rate

Question 8

what is meristem

Answer 8

it can differentiate into any type of plant cell, throughout the life of the plant. used to clone plants quickly and econmcally

Question 9

uses of meristem

Answer 9

large amounts of identical plants
genetically identical- so you know the characteristics
produce plants that are difficult to grow
planting rare plants to prevent extintion

Question 10

what an embroyonic stem cell

Answer 10

undifferentiated cell found in early embryo. wuth potential to differentiate into lots of cells in the body