Which one of the following does NOT contribute to the incidence of nosocomial infections?
A) antibiotic resistance
B) lapse in aseptic techniques
C) gram-negative cell walls
D) lack of handwashing
E) lack of insect control
C
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During photosynthesis, _____________ is reduced to _____________
A. water; carbon dioxide B. carbon dioxide; glucose C. oxygen; water D. glucose; oxygen E. carbon dioxide; oxygen
Which of the following methods of genetic recombination is common to both eukaryotic and bacterial cells?
A. Crossing over B. Vertical gene transfer C. Gamete fusion D. All of the choices are correct.
________ is a property of soils that is determined by the different sizes and types of particles in soils
Fill in the blank(s) with correct word
The hypothesis that organic molecules formed near the Earth's surface in pools of water is called the:a
clay hypothesis. b. iron-sulfur world hypothesis. c. iron-clay hypothesis. d. organic broth hypothesis. e. prebiotic soup hypothesis