Growth and Development. B5

Question 1

what are the two types of cell division?

Answer 1

mitosis and meiosis

Question 2

what is mitosis?

Answer 2

cell division that creates a new cell that has an identical pair of chromosomes.

Question 3

where does mitosis occur?

Answer 3

growth, repair, replace old tissue.

Question 4

what is meiosis?

Answer 4

only occurs in testes or ovaries and is a specialized cell that produces gametes for sexual reproduction.

Question 5

what happens when a male and female gamete fertilize?

Answer 5

produces a single cell called a zygote

Question 6

up until what stage are human cells unspecialized?

Answer 6

8 cell stage

Question 7

what are the benefits of human stem cells?

Answer 7

help treat disease and repair damaged tissues

Question 8

what happens during therapeutic cloning?

Answer 8

the nucleus is removed from the egg cell and replaced with a nucleus from a parent cell

Question 9

what type of cell division do plant cells divide by?

Answer 9

mitosis

Question 10

what is phototropism?

Answer 10

where plants respond to the light which changes the direction they grow in