Which of the following factors is/are helping increase the incidence of emerging diseases?
A. expansion of range by insect vectors
B. global warming
C. abuse of antibiotics
D. poor implementation of vaccination programs
E. All of these factors are helping increase the incidence of emerging diseases.
Answer: E
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Streptomyces produces geosmins which give soil a characteristic musty odor
Indicate whether this statement is TRUE or FALSE.
As DNA is always double-stranded, RNA is always single-stranded
Indicate whether this statement is true or false.
Zhang and Cech’s experiments confirmed what feature of ribozyme activity?
a. Ribozymes inhibit rates of biological reactions. d. Ribozymes can link amino acids together even if their proteins are removed. b. Ribozymes catalyze formation of the fundamental linkage tying amino acids together in proteins. e. Ribozymes provide the possible solution of whether proteins or nucleic acids come first in evolution. c. Ribozymes catalyze formation of the fundamental linkage tying nucleic acids to proteins.
Four of the five choices listed below are associated
with the theory of dosage compensation. Select the exception. a. ABC model b. X inactivation c. methylation d. XIST gene e. RNA