B2) Cell Division Flashcards
1
Q
How many chromosomes are there in the nucleus of the body cells?
A
46.
2
Q
What is the cell cycle?
A
When body cells divide in series of stages.
3
Q
What process does cell division in the cell cycle involve?
A
Mitosis.
4
Q
What is a zygote?
A
Single new cell when an egg cell + a sperm cell fuse.
5
Q
What is an embryo formed by?
A
Zygote dividing + becoming hollow ball of cells.
6
Q
What are the inner cells of the embryo?
A
Embryonic stem cells.
7
Q
What does therapeutic cloning involve?
A
Using cells from adult to produce cloned early embryo of themselves. Could provide source of perfectly matched embryos for medical treatments . New organs not rejected by body as been made from body + have same genes.
