Which choice is not a unit of stress?

Which enzyme in the dark repair mechanism of DNA repair removes the damaged DNA fragment?

Given the t-section in Question 17, what is the moment of inertia for bending about the neutral axis?  

If your bacteria grows well on a PEA this indicates:

If you inoculate a SIM tube with bacteria and the agar turns black, this indicates:

A positive PR fermentation test is:

Which of the following antibiotics inhibits transpeptidase?

A shaft must deliver specified power.  If the shaft size is held constant, which statement is correct in regard to shaft stress.

A 2×4 has a section modulus of 3 in3 for strong axis bending.  If it is subject to strong-axis moment of 3000 lb in, what is the magnitude of outer-fiber bending stress?  Provide your answer in psi, but do not include units in your answer.

What type of tube is used to collect gas in the PR fermentation test?