17 Questions
What do chromatids revert to after cell division?
Chromatin fibres
What is the function of a centromere during cell division?
To attach the chromosomes with spindle fibres and detach sister chromatids during anaphase.
What are genes?
Specific sequences of nucleotides on a chromosome that encode proteins
What is a chromatid?
One vertical half of a duplicated chromosome
What are sister chromatids?
Two identical chromatids joined by a centromere
What is the function of genes?
To transfer hereditary units from parents to offspring
What biological evidence can be obtained from blood or semen stains found at a crime scene?
DNA fingerprinting
What is the structure that DNA strand wound around a histone octamer forms?
Nucleosome
Why do new cells need to be produced?
For growth, replacement, repair, and reproduction
What is the function of cell division in growth?
Essential for forming tissues and organs
Why is cell division important for replacement?
To replace cells destroyed during normal body functions
What is the specific sequence of nucleotides on a chromosome that constitutes a gene?
Temes
How are new cells formed in the bone marrow?
Through a division of their parent cells
What happens to old and dried leaves in plants?
They fall off and new ones grow out
How are accidental injuries like cuts in the skin or fractures in bones repaired?
Through cells that divide, cover up the gaps, and join the broken ends
What is the term for the type of cell division that occurs in all body cells except in oocytes and spermatocytes?
Mitosis
What remains the same in terms of chromosomes during cell division for growth, replacement, and repair?
The number of chromosomes
Test your knowledge on the process of cell division and the structure of chromosomes in Biology. This quiz covers topics such as chromatids, chromosomes, and chromatin fibres.
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