Mitosis
What is the result of mitosis?
two identical nuclei
Multicellular organism grow in size by producing more .....
cells
How do some chemicals increase the risk of a person getting cancer?
by causing cell mutations
What determines cell differentiation once gene regulation as taken place?
Protein manufacture
Gene mutation can occur in mitosis or meiosis?
both
DNA replication occurs in mitosis or meiosis
both
What is the process called where cells stop growing when they come in contact with another cell called
contact inhibition
What is the most potent carcinogen known today
Dioxane
A specific protein is needed to create a specialized cell. Which process signals for this protein to be made?
gene activation
Double Jeopardy Make your wager..........
haploid
What role does the centromere play in cellular reproduction?
anchor for the spindle fibers attached to the chromotids.
The morphological shape of a cell depends on what?
what the cells function is
To treat diseases, some human tissues have been transplanted. Which tissue is currently transplanted specifically to replace human stem cells.
bone marrow
How do stem cells become specialized cells that perform unique duties?
by gene activation
Which nucleated cell in the human body does NOT contain all of the genetic information for the organism?
sperm or egg cell
Which phase of the cell cycle does most cell growth take place?
interphase
Cell division is necessary for an organism to do what
grow and reproduce
A drug used to treat cancer would target cells that are what?
having high mitotic activity, rapidly dividing cells
What is the major benefit of totipotent cells?
they can differentiate into any other cell type
Chromosomes are composed of what?
DNA and protein histones
Name and describe the activities occurring during the four phases of mitosis
Pro nuclear memb disolve, chromo visible
Met chromo line up
ana chromo separate
telo nuclear memb reforms, cytokin starts
The cell is the basic unit of living organisms. What is the greatest difference between the cells of a baby elephant and the cells of the adult elephant?
adult has more cells
Mitosis
Nerve cells and skin cells are specialized cells that are descended from the same set of stem cells. Why do these specialized cells vary in structure and function?
Nerve cells and skin cells receive the same DNA. Different sets of genes are activated in each cell type.
What determines if an egg will develop into a chicken, toad, or snake?
the genes of the egg