A plate of solid growth medium with colonies on it is pressed gently onto sterile velveteen. The velveteen "stamp" is
used to make identical plates. This technique is called ____.
a. replication
b. replica plating
c. plating
d. plate making
e. horizontal gene transfer
ANSWER: b
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DDT is a(n)
a. blight that affects American chestnut trees. b. endangered plant species. c. pesticide. d. wildlife refuge area in Yellowstone National Park.
Antioxidants are believed to:
A) generate free radicals B) cause cancer C) destroy free radicals D) break down vitamins E) break down hydrogen peroxide
The study of the frequency and distribution of a disease in a defined population is
A. epidemiology. B. pathology. C. immunology. D. clinical microbiology. E. medicine.
In positive control regulation, the activator protein binds to the ________ site to induce transcription
a. activator-binding b. operator c. promoter d. repressor