Cell Division Flashcards
process by which cells reproduce themselves
cell division
Cell division enables multicellular organism
to grow and develop
to replace worn out and damaged tissues
Cell division enables multicellular organism
to grow and develop
to replace worn out and damaged tissues
cell division consists of two activities
karyokinesis
cytokinesis
two kinds of nuclear cell division
mitosis
meiosis
a cycle that a cell undergoes that the cell undergoes that a time it is formed until it prepares itself for cell division
cell cycle
molecules synthesized in G1
protein
RNA
3 types of RNA molecules
RRNA
TRNA
MRNA
how many hydrogen bonds between adenine and thymine
2 bonds
how many hydrogen bonds between cytosine and guanine
3 bonds
most critical stage of the cell cycle
s stage
type of cells that do not regenerate
brain cells and heart cells
arranged to be spindle fibers
microtubules
binding sites for spindle fibers
kinetochore
come from centrioles attach to kinetochore
kinetochore microtubule
grow outward but do not attach to kinetochore
nonkinetochore microtubule
radiate outward, important in the stability of the location of centrioles
aster microtubule
cells divide how many times in mitosis
once
cells divide how many times in meiosis
twice
meiosis I is also called this
reduction division
meiosis II is called this
equatorial division
homologous chromosomes (
autosomes
what pairs of chromosomes are considered as autosomes
1-22
determines the sex of the child
father