A 45× objective and a 10× ocular produce a total magnification of
A. 145×.
B. 900×.
C. 450×.
D. 55×.
Answer: C
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The first example of an antimicrobial drug synthesized in the laboratory was
A. penicillin. B. sulfa. C. erythromycin. D. Salvarsan.
Which of the following exhibits fourth level (quaternary) structure?
a. amino acids b. lipids c. glycogen d. hemoglobin e. complex carbohydrate
A mutation that changes an amino acid-coding codon to a stop codon is classified as what kind of codon?
A) silent B) missense C) nonsense D) neutral E) conditional
Which flower would you select as the one matching the plant from which he gathered the seeds?
A) The flower with eight parts B) Either the flower with five or the flower with eight parts could match the seeds. C) The flower with five parts D) The flower with six parts