Deck 1 Flashcards
Where do new cells arise?
All cells come from existing cells
Why does the body constantly make cells?
To repair damaged cells or replace worn out tissue
Is cell division the same in all cells? Why?
No, some cells copy themselves (mitosis) and some produce haploid cells (meiosis - gametes)
Why must each new cell get a complete copy of the original cell’s DNA?
to function properly
How many chromosomes are in the human body?
46
What are the parts of a chromosome?
Centromere, Chromatid,
Uncoiled chromosomes are called
chromatin
What are duplicated chromosomes called?
Homologous chromosomes
What is asexual reproduction?
organism copying itself
give two examples of organisms that perform asexual reproduction?
sponges, bacteria
What is sexual reproduction?
Formation of offspring with a mother and father
List an example of an organism that performs sexual reproduction
humans
