U5 Flashcards
Surface Area
The amount “covering” an object
Volume
The amount of space in an object
Why do cells divide?
for your body to grow and for body tissue to continuously renew itself
Sexual: Pros
Genetic Diversity
Protection against diseases
Sexual: Cons
Requires Energy
Requires 2 partners
Asexual: Pros
Time Efficient
No need for partner
Less energy
Asexual: Cons
No Genetic Diversity
No variation
2 types of Cell Division
Mitosis & Meiosis
Cell Division
The process of making 2 new body cells
Divides itself in half to keep surface area to volume ratio high
Binary Fission
asexual reproduction by a separation of the body into two new bodies
Mitosis
also known as cell division, the process of cell duplication in multicellular organisms
Gametes
a reproductive cell of an animal or plant
Meiosis
a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes
How many pairs of chromosomes are there?
23
How many chromosomes are there?
46
How many chromatids are there?
92