Cells

Question 1

Describe the stages of the cell cycle

Answer 1

1. Cell grows, increasing the number of sub-cellular structures such as ribosomes and mitochondria.
2. DNA/chromosomes/genetic information is replicated/doubled.
3. Each set of chromosomes moves to opposite ends of the cell.
4. Nucleus divides (mitosis)
5. Cytoplasm and cell membranes divide
6. 2 genetically identical daughter cells are formed

Question 2

new cells are needed for an organism to..

Answer 2

grow and to replace cells that are worn out or damaged

Question 3

mitosis is needed to…

Answer 3

grow, replace and repair cells

Question 4

number of bacteria =

Answer 4

number at the start x 2^number of divisions

Question 5

bacteria divide by…

Answer 5

cell division/binary fission

Question 6

one bacterial cell divides around…

Answer 6

every 20 mins

Question 7

what is a bacterial colony

Answer 7

a large group of bacterial cells that has originated form one cell