Cell Division Flashcards
What are stem cells?
Stem cells are unspecialised cells that can differentiate into any type of cells.
How many pairs of chromosomes are there?
23 pairs
What is the cell cycle?
It is the how the cell divides and makes a new identical copy of itself.
What is stage 1
Stage one is when the cell increases in mass and in size so it can hold all the copied chromosomes and makes more organelles
What is stage 2?
It is when the chromosomes that have been copied are pulled away dividing the nucleus.
What is stage 3?
It is when the cell membrane and cytoplasm are divided creating identical cells.
Why is mitosis important?
It is important as cells will grow old so they need to be divided and replaced.
What is differentiation?
As cells take on specific jobs, they become specialised. The process by which this happens is called differentiated
Why is it important?
This allows cells to develop specific structures and components for particular functions.
Stem cells in plants
Plants produce stem cells during their whole lives.
What happens when the temperature is increases over 35
The rate of reaction decreases until it reaches 0 and then the enzyme becomes denatured
What is denatured
It is when the shape of the active site of the enzyme changes making them useless
