Penicillin was discovered by

A. Koch.
B. Hooke.
C. Fleming.
D. Ehrlich.


C

Biology & Microbiology

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Leaves absorb the least amount of light in the ________ range of the visible spectrum

A. orange B. green C. blue D. yellow E. violet

Biology & Microbiology

The major organism used in the microbial production of citric acid is ________.

A. Aspergillus niger B. Penicillium notatum C. Lactobacillus delbrueckii D. Rhizopus nigrificans

Biology & Microbiology

Evergreen trees are found in

a. the Southeastern U.S. b. temperate lowlands in the U.S. c. the taiga. d. the boreal forests. e. all of these.

Biology & Microbiology

Which of the following is necessary for the fetus to develop female gonads?

a. lack of testosterone exposure b. presence of Y chromosome c. estrogen d. progesterone e. both estrogen and progesterone

Biology & Microbiology