Alpha helices and ?-pleated sheets represent the ________ structure of a protein
A) primary
B) secondary
C) tertiary
D) quaternary
E) All of the above
B
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Which of the following is NOT a domain?
A. Eukarya. B. Archaea. C. Protista. D. Bacteria. E. Both Bacteria and Protista.
Microorganisms were inoculated on two agar plates and incubated for 24 hours. After incubation, no microbial colonies were seen on the spread plate agar, but three microbial colonies were seen in the pour plate agar. What may account for this observation and how can growth of this microorganism be enhanced?
What will be an ideal response?
Transcription starts at a _________ and ends at a ____________.
a. transcriptional start site; terminator b. promoter; 5' end c. promoter; terminator d. 3' end; 5' end
The only helminth disease of humans spread by an insect vector is
A. ascariasis. B. fascioliasis. C. filariasis. D. hydatid disease. E. schistosomiasis.