Cell Division: Cell division by mitosis

Question 1

What happens in mitosis?

Answer 1

starts with a diploid cell- chromosomes are in pairs
= ends with 2 geneitcally identical daughter cells, diploid cells

Question 2

What are the reasons for mitosis?

Answer 2

= growth repair
= when we want identical copies of a cell
= asexual reproduction

Question 3

What are the 2 main stages of the cell cycle?

Answer 3

= interphase
= m mitotic phase

Question 4

What happens during interphase?

Answer 4

= energy stores increases
= cell grows in size
= organelles are replicated
=DNA copied

Question 5

What are the 2 processes that take place in the mitotic stage?

Answer 5

= nucleus divides into 2 daughter nuclei- mitosis
= cell divides into 2 daughter cells each with a nucleus- cytokenesis

Question 6

Can we see the chrosomes in the nucleus in interphase?

Answer 6

= no- not visible
= instead we see chromatin
= chromosomes have a loose, open structure
= DNA is acessible for transcription and replication

Question 7

What is DNA replication like?

Answer 7

= during interphase chrosomes are replicated
= 2 identical molecules of DNA- sister chromatids
= point where they are joined- centromere
= process happens for every chromosome
=