When the product of reaction A becomes the reactant of reaction B, the metabolic pathway is

A. convergent.
B. cyclic.
C. bidirectional.
D. divergent.
E. linear.


Answer: E

Biology & Microbiology

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A population of 100 animals undergoing logistic growth has rmax = 0.4 and K = 102. Given that r = r = rmax(K

a. 0.0078 b. 0.792 c.

Biology & Microbiology

Examine this diagram of short tandem repeats found in DNA profiling of three suspects in a crime. Man 1 shares the same number of STRs as 1 in 5,000 people. Man 2 shares the same number of STRs as 1 in 10,000 people. Man 3 shares the same number of STRs as 1 in 3,500 people. DNA extracted from samples at the crime scene found 6 STR repeats, based on the data provided, it can be interpreted that


A. it is more rare to have six STRs than five or seven.
B. Man 2 must be guilty, based on this proof.
C. no conclusion can be made, because the STRs all repeat the same sequence of C-T-A.
D. Man 2 is likely guilty, considering that he has a rare STR profile that matches crime scene samples.
E. STR numbers match Man 2.

Biology & Microbiology

Which of the following statements about PCR is true?

A. PCR uses DNA polymerase. B. PCR stands for "polymerizing copies of RNA." C. PCR can create several copies of a segment of DNA in a test tube. D. One new strand of DNA is created with each replication cycle.

Biology & Microbiology

If there is 24% guanine in a DNA molecule, then there is _____ cytosine

A) 24% B) 26% C) 48% D) 52% E) impossible to determine

Biology & Microbiology