Root nodules are swellings on some plants that contain mutualistic __________ bacteria. Fill in the blank(s) with the appropriate word(s)
ANSWER: nitrogen-fixing
Biology & Microbiology
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Which of the following is a prokaryote?
a. Bacteria b. Fungi c. Protist d. Plant cell
Biology & Microbiology
Uterine contractions are most likely an example of
a. a unique human reproductive phenomena. b. negative feedback. c. positive feedback. d. programmed events. e. positive feedback and programmed events.
Biology & Microbiology
Protons and neutrons make up the atom's central core referred to as its ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The cause of stomach ulcers appears to be
A. excess stomach acid. B. diets rich in meat products. C. drinking too much coffee. D. extreme stress. E. the bacterium Helicobacter pylori.
Biology & Microbiology