An early contributor to the understanding of nitrogen fixation was

A. Hooke.
B. Pasteur.
C. Winogradsky.
D. Beijerinck.


D. Beijerinck.

Biology & Microbiology

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Similar body parts that reflect shared ancestry are called __________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

When we know what kinds of ____ are present in an organic compound, we can predict its chemical behavior

a. proteins b. enzymes c. triacylglycerols d. macomolecules e. functional groups

Biology & Microbiology

Once you have a DNA library, you can be confident you hace successfully cloned the gene of intrest.

a. true b. false

Biology & Microbiology

A pelvic examination of a 23-year-old woman showed vesicles and ulcerated lesions on her labia. Cultures were negative for Neisseria and Chlamydia; the VDRL test was negative. Which treatment is appropriate?

A) acyclovir B) metronidazole C) miconazole D) penicillin E) surgery

Biology & Microbiology