U2 Key Area 1- Producing New Cells Flashcards
What is mitosis
Mitosis is the process of cell division where- by a mother cell divides to produce two genetically identical daughter cells
Where does mitosis occur
Nucleus
What do mitosis provide
Provides new cells for growth, repair of damaged tissues and replacement of dead or damaged cells
What do the daughter cells do in mitosis
The daughter cells will carry out the same function as the mother cell.
What are chromosomes
When two chromatids are joined together by a centromere it makes a chromosome.
What are chromosome made out of
DNA
How many chromosomes are in the human body
46 chromosomes
What are diploid cells
They are two sets of chromosomes. Each set has 23 chromosomes one from mum and one form dad
What are hapliod chromosomes
Haploid has 1 set of chromosomes
What is chromosome complement
A specific number of chromosome within a cell used on different species.
How does chromosome complement ensure that cells are provided with there specific characteristics
Since chromosomes provide the genetic information for each species, it is essential that each new cell receives a full complement of chromosomes
How does chromosome complement ensure that cells are provided with there specific characteristics
Since chromosomes provide the genetic information for each species, it is essential that each new cell receives a full complement of chromosomes
What is step 1 mitosis?
Nucleus contains long and coiled chromosome
Each chromosome double to form two identical chromatids
What is step 2 mitosis?
Chromosomes shorten and coil up.
Nuclear membrane starts to disappear.
What is step 3 mitosis?
Chromosomes line up at the equator of the cell and spindle fibres attached to the centrometres