cell growth
Before a cell gets too large, a growing cell will divide to form two “daughter” cells through
cell division
Cancer is a disorder in which cells lose the ablitiy to control
growth and division
_________ involves the fusion of two separate parent cells and ______ cell division can be the only form of reproduction for some bacteria and single-celled organisms;
sexual reproduction
asexual reproduction
binary fission is a type of what reproduction
asexual reproduction
what determines a cells ultimate identity
Differentiation
As the length of the sides increases, the
volume increases
the two ways cells end their lives in the cycle
1. a cell may die due to damage or injury
2. apoptosis
interphase stages
G1
S
G2
two genetically identical daughter cells are formed because
binary fission
The unspecialized cells from which differentiated cells develop is
stem cells
why does information overload occur
when the cell size increases the DNA does not
cells divide uncontrollably to form a mass of cell called
a tumor
the four phases events of mitosis
Prophase
Metaphase
Anaphase
Telophase
Prokaryotes lack a nucleus, and their DNA molecules are suspended within the
cytosol
Each of us started life as a single cell that progressed through a developmental stage called an
embryo
The rate at which nutrients are used up and waste products are created is dependent on the
cells volume
A high number of cancer cells have a defect in a gene called
p53
why do Eukaryotic cells generally have much more DNA?
because they have multiple chromosomes
Most prokaryotes contain how many how many DNA chromosomes.
what is the shape of those/that DNA chromosome(s)
1
circular
what are the benefits and issues of stem cells
Benefits: repair or regeneration of cells damaged by certain kinds of disease
issues: embryonic stem cells cannot be harvested without destroying the embryo.
if the cell is having difficulty to get sufficient amounts of oxygen and nutrients in, and waste products out that is because
the cell is too large
invade and destroy surrounding, healthy tissue
absorb nutrients needed by other cells
Block nerve connections
Prevent organs from functioning properly
malignant tumor
DNA and proteins that are very tightly associated and coiled around special proteins called_______ to form
histones
chromatin
there are 4 steps to the prokaryotic cells cycle. starting DNA and ending with the cell dividing into 2 daughter cells. what are the middle two steps
dna duplicates
cell membrane indents
in how many days into development a human embryo forms into a blastocyst. a blastocyst is
4 days
a hollow ball of cells with a cluster of cells on the inside known as the inner cell mass