9. assume that a dna molecule contains 100 base pairs.
one base pair is (a paired with t) or (c paired with g.)
there are 45 cytosines in this dna molecule. (2 points)
a. how many guanines are there? (hint: what base will guanine bond with? how many of those are there? )
b. how many adenines are there? (hint: the total number of base pairs will equal 100.)

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Which of the following forest management practices is best for reestablishing areas of forest?

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.