C
Chromatid-
One half of a chromosome
What are the phases of the cell cycle?
G(0), G1, S, G2
How are chromosomes formed?
by chromatids joining together in the centromere
What connects the centrioles to the centromeres?
Spindle Fibers!
Where does a zygote stick to?
The Uterus lining, which is filled with nutrients
Sister Chromatids-
Two identical chromatids
What happens in G1
The cell grows and makes proteins
How do centrioles play a role in cell division?
They pull the chromosomes apart.
Why do cells divide?
Because if they just kept growing, it would cause the body to rupture
How is a zygote formed
By an egg being fertilized
what are the two purposes of the cell cycle?
Growth and Repair
What happens in S?
DNA replication occurs, doubling the number of chromosomes
What is Telophase?
When the cell has almost fully duplicated, and it's just the cell wall that needs to finish forming. typically looks like two circles connected
What is cancer
When a cell keeps dividing, avoiding regulation.
What is an adult stem cell
A stem cell that already is what it's chosen to be (liver cell, kidney cell, etc.)
How many chromosomes are in the human body cell?
46
What happens in G2?
More cell growth and protein synthesis
How do you count chromosomes?
By the centromere
What is apoptosis?
It's programmed cell death.
What is an embryotic stem cell?
A stem cell that hasn't decided on what it wants to be.
What is Interphase?
The growth phase of the cell cycle
What is G0
When the cell is in a resting phase
Where is all genetic information stored?
In the nucleus
What is an example of apoptosis
The webbing of the human hands and fingers
Where can stem cells be found?
In amniotic fluid