Term 4 Chemistry Flashcards
What are different forms of the same gene called?
Alleles
How much of your DNA comes from your parents?
50%
Where are chromosomes found?
In the nucleus
How many chromosomes are there in a human body cell?
46 (23 pairs)
How is DNA shaped?
A double helix
At the start of the cell cycle you have one cell by the end you have 2 identical cells known as ?
Daughter cells
What is the growth and replication part of the cell cycle?
It is the longest process where the cells divide and multiply, the chromosomes are doubled
What is the material divided part of the cell cycle?
Where they get pulled apart into 2 usurally
What is the cell divides part of the cell cycle?
Where the cells form into 2 daughter cells
What is a stem cell?
A cell that has the potential to form a wide variety of different cell types
What is differentiation?
The process where cells become specialised for a particular function
What are meristems?
They don’t fully differentiate
What are adult stem cells?
They can only differentiate into blood cells
What are embryonic stem cells?
Can differentiate into any cell
