Which of the following viruses can cause cancer?
A. Rous sarcoma virus
B. hepatitis B
C. papillomavirus
D. Epstein-Barr virus
E. All of the choices are correct.
E. All of the choices are correct.
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ALL microorganisms that live in the human body are harmful
Indicate whether the statement is true or false.
Which of the following is not a reason why gene regulation in prokaryotes is simpler than in eukaryotes?
A. Prokaryotic DNA is not packaged in chromosomes. B. Prokaryotic DNA is not sequestered in the nucleus. C. Processing of mRNA does not occur in prokaryotes. D. Prokaryotic mRNA travels rapidly from the nucleus. E. Transcription and translation are not separate processes in prokaryotes.
What region in eukaryotic genes usually contains the majority of regulatory elements?
A. 0 to 50 B. -50 to 0 C. -50 to -100 D. -100 to -150
The spores of streptomycetes are ________.
A. motile by means of flagella B. nonmotile C. motile by means of cilia D. motile by means of pseudopodia