Who of the following provided the evidence needed to discredit the concept of spontaneous generation?

A. Pasteur
B. Semmelweiss
C. Lister
D. Koch


Answer: A

Biology & Microbiology

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Ferns are particularly useful for research on plant growth and development because of the ____

a. numerous, large apical cells on the edges of their fronds b. single, large apical cell on the tip of their fronds c. single, large apical cell at the tip of their apical meristems d. numerous, small apical cells at the base of their apical meristems e. single, small apical cell at the base of their apical meristems

Biology & Microbiology

Genetic change due to the migration of fertile individuals or gametes between populations is

a. gene flow b. bottleneck c. genetic drift d. mutations e. microevolution

Biology & Microbiology

The oil from the sebaceous glands is produced by which of the following cell organelles?

A) ribosomes B) the rough endoplasmic reticulum C) the cell membrane D) the smooth endoplasmic reticulum

Biology & Microbiology

During secondary anaerobic wastewater treatment, complex polymers are FIRST ________ to monomers that then undergo ________, producing waste products including acetate, CO2, and H2

a. respired / methanogenesis b. fermented / respiration c. hydrolyzed / fermentation d. fermented / hydrolyzation

Biology & Microbiology