If two organisms have similar rRNA sequences, you can conclude that they
A) live in the same place.
B) evolved from a common ancestor.
C) will have different G-C ratios.
D) will both ferment lactose.
E) mated with each other.
B
You might also like to view...
Phosphofructokinase (PFK) is an enzyme that converts fructose 6-phosphate to fructose 1,6-bisphosphate, by adding a phosphate group. This is the first committed step of the metabolic pathway of glycolysis, and thus it is very tightly regulated. AMP binds to PFK at a site distinct from the binding site for fructose 6-phosphate, and stimulates the formation of fructose 1,6-bisphosphate. ATP binds
to PFK at a site distinct from the binding site for fructose 6-phosphate, and inhibits the formation of fructose 1,6-bisphosphate. There are other regulators of this enzyme as well. What is the role of AMP in this example? A. Competitive inhibitor B. Noncompetitive inhibitor C. Allosteric inhibitor D. Allosteric activator E. Catalyst
In what Eons was there very little appearance of new forms of life, how long did they last, and why
was there so little diversification?
What will be an ideal response?Streams are classified according to orders. If two first-order streams join, flow through a valley, and are joined by another first-order stream, what is the final stream order?
A) first order B) second order C) third order D) fourth order
Which of the following are the purine nucleotides in DNA?
A) Adenine and thymine B) Cytosine and guanine C) Adenine and cytosine D) Guanine and adenine E) Thymine and uracil