____ is an element that is abundant in Earth's atmosphere; however, usable forms of this element (such as ammonia) are comparatively rare in certain soils. To circumvent this problem, soybean plants form symbiotic relationships with bacteria
Fill in the blank with the appropriate word.
Nitrogen
Biology & Microbiology
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Fermentation is a process that proceeds without oxygen. Such a process can be described as ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Giardia lamblia, spread by water contaminated with feces, forms resistant ____
a. endospores b. exospores c. cysts d. sporangia e. trophozoites
Biology & Microbiology
The specimen preparation technique that is best for viewing cell motility is the ________.
A. hanging drop B. negative stain C. Gram stain D. fixed, stained smear E. flagellar stain
Biology & Microbiology
In Waller's experiment, he placed one front paw and one back paw of a dog into pans containing
a. carbon dioxide. b. iron. c. mercury. d. pure water. e. salt solution.
Biology & Microbiology