All cells in the body have the same genes, but cells become
differentiated due to differences in gene expression.
True or False
TrueFalse
What cellular events must occur to establish the body pattern in
an animal? (Check all that apply.)
Check All That Apply
Cell division
Cell division
Hybrid formation
Hybrid formation
Cell migration
Cell migration
All cells live
All cells live
Cell differentiation
Cell differentiation
Apoptosis
Apoptosis
The first morphogen gradient to provide positional information
is established initially in...
essay question: 1.explain why all cells must have the four parts
all cells have.
2. Be able to compare and contrast prokaryotic and eukaryotic
cellular characteristics. (including DNA location, cell wall
makeup)
Which of the following is a difficulty in getting
prokaryotic cells to express eukaryotic genes?
a. The signals that control gene expression are different for
prokaryotes, thus requiring prokaryotic promoter regions to be
added to the vector.
b. The genetic code differs because prokaryotes substitute the base
uracil for thymine.
c. Prokaryotic cells do not recognize eukaryotic stop and start
codons.
d. The ribosomes of prokaryotes are not large enough to handle long
eukaryotic genes.
Why do cells have telomeres?
Why do telomeres get shorter every time a cell divides? What
counteracts this shortening?
What role do telomeres play in aging?
If telomerase makes cancer cells immortal, could it prevent
normal cells from aging?
Do you think we could extend the average lifespan by preserving
or restoring the length of telomeres with telomerase? If so, does
that raise a risk the telomerase also will cause cancer?
Provide two examples of how therapeutic genes can be delivered into
cells, and discuss the challenges scientists face in making gene
therapy an effective technique for treating human genetic disease
conditions.
basic biotechnology