A scientific approach to studying nature is based on all of the following except:a
asking questions.
b. formulating hypotheses.
c. making predictions.
d. devising tests and reporting results.
e. devloping a control group.
E
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What structures inside the human penis are responsible for an erection?
A) columns of erectile tissue that fill with blood B) a series of small bones that push out of the pelvic cavity and into the penis during arousal C) small balloon-like glands that fill with air D) one large bone that pushes out of the pelvic cavity and into the penis during arousal
The anticancer drug taxol acts to
a. block microtubule organizing centers. b. stabilize microtubules and thus inhibit disassembly. c. block microtubule assembly by binding to free tubulin. d. accelerate microtubule disassembly by binding to tubulin in microtubules, causing those molecules to exit the microtubule more quickly. e. Both a and c
A compound is extracted from a microbial culture and is modified in the laboratory for use as an oral medication. This product would be a(n)
A) antibiotic. B) analog. C) semisynthetic antimicrobial. D) synthetic antimicrobial. E) probiotic.
The gene that codes for a protein capable of repressing an operon is called the ___
A. Operator B. Structural locus C. Regulator D. Promoter E. Terminator