True pili used for conjugation are only found on gram-negative bacteria.
a. true
b. false
Answer: a. true
Biology & Microbiology
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Many proto-oncogenes regulate ________
A) cell growth B) cell cloning C) cell division D) cell repair
Biology & Microbiology
The main criteria presently used for grouping viruses does NOT include
A) structure. B) chemical composition. C) similarities in genetic makeup. D) host infected.
Biology & Microbiology
About 1 male in 1,000 is born with two Y chromosomes and one X chromosome, a condition known as ________ syndrome
Fill in the blank(s) with correct word
Biology & Microbiology
Nitrification ____.
A. converts ammonium into nitrates B. reduces nitrates to nitrites C. converts nitrogenous compounds into free nitrogen D. converts atmospheric nitrogen to ammonia E. reduces ammonia to ammonium
Biology & Microbiology