The smallest unit of life is a
a. tissue
b. organ
c. cell
d. organism
Ans: c. cell
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A gram-negative, nonsporulating rod that is highly motile, oxidase negative, facultatively aerobic, ferments glucose, and urease-positive is likely to be of which genus?
A) Pseudomonas B) Proteus C) Lactobacillus D) Rickettsia
Were guppies present in every pond?
a. yes b. no
Which of the following best describes a dead cell as a system?
a. It is a closed system that exchanges energy with its surroundings. b. It is an open system that exchanges energy with its surroundings. c. It is an isolated system that does not exchange energy or matter with its surroundings. d. It is a closed system that
Which of the following has not been produced by fermentation technology?
A) Vaccines B) Enzymes C) Biopesticides D) Steroid hormones E) All of the above have been produced by this technology.