Producing New Cells Flashcards
What is the name of the division of the nucleus into 2 nuclei before cell division?
Mitosis
What do we call the number of chromosomes required by a cell in order to function properly?
Chromosome complement
What is the chromosome complement of human cells?
46
What do we call a cell with one set of chromosomes?
Haploid
What do we call a cell with two sets of chromosomes?
Diploid
What happens to the nucleus at the start of mitosis?
The nuclear membrane disintegrates
Where do the chromosomes get lined up?
Along the equator
What structures move the sister chromatids to the equator?
Spindle fibres
Which structures pull the sister chromatids apart?
Spindle fibres
Where are the sister chromatids pulled to from the equator?
The poles
Name the structure that holds the sister chromatids together?
Centromere
How many chromatids does a chromosome have after DNA replication?
2
Why are new cells required by multicellular organisms?
- Growth
2. Repair
If one cell splits into two cells via mitosis, what will happen to the number of chromosomes in the two daughter cells?
Stay the same
State 3 facts about stem cells.
- They are unspecialised
- They can self-renew
- They have the potential to become different types of cells
What are the two types of stem cell found in the body?
- Embryonic
2. Tissue
Which type of stem cell has the most potential to become different types of cells?
Embryonic
Put the following into the correct order of size starting with the smallest:
tissues - systems - cells - organs
Cells - tissues - organs - systems
What do we call a group of organs that work together to carry out a particular function?
A system
