Cell production-Unit 2

Question 1

What is the importance of cell division?

Answer 1

Growth and repair of damaged cells, maintain the diploid chromosome compliment

Question 2

Where does mitosis take place

Answer 2

nucleus

Question 3

How many chromosomes does a human cell have?

Answer 3

2 sets of 23 (46)

Question 4

What must each new cell contain?

Answer 4

Same number of chromosomes as the parent cell

Question 5

stages of mitosis!

Answer 5

1- Chromosomes are replicating and doubling in number in prep for mitosis individual chromosomes are not visible
2 - Chromosomes become coiled up and visible. Now made up of identical chromatids
3 - Pairs of chromatids link up at the equator of the cell, spindle fibers form and attach to the chromatids
4- Pairs of chromatids are pulled apart, chromosomes move to opposite poles of the cell
5 - Nuclear membranes start to form
6 - cytoplasm divides

Question 6

where can the two types of stem cell be found?

Answer 6

Tissue - body throughout life
Embryonic - obtained from embryo at early stage

Question 7

What is the hierarchy of organs?

Answer 7

cells - tissues - organs - organ systems