Which of the following is correct about viruses?
A. Viruses can be grown on nutrient agar.
B. Viruses are prokaryotic.
C. Viruses contain 70S ribosomes.
D. Most viruses cannot be seen with a light microscope.
E. Viruses undergo binary fission.
Answer: D
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Pathogenicity islands are
A. enzymes like proteases and hemolysins that promote pathogenesis. B. gene clusters that confer the ability to become pathogenic. C. a lymphoid tissue present in the small intestine. D. closely related groups of pathogenic enteric organisms.
what is HSV-II?
What will be an ideal response?
Cloning by embryo splitting
A. uses an unfertilized egg as the starting point. B. does not require the use of a host uterus. C. cannot be used for cloning human embryos. D. is characterized by all of these. E. is characterized by none of these
Moths that can evade a bat's echolocation have ________ that increase their likelihood of survival and reproduction.
A. mutations B. adaptations C. fitness D. selection E. genes