Avery, MacLeod, and McCarty showed that DNA was the transforming principle when they mixed
dead virulent bacteria and live avirulent bacteria after treating with a DNA degrading enzyme, injected
this into mice, and observed that the mice survived. If RNA were the genetic material, what would
have been the effect on the mice after treating with a DNA degrading enzyme and why?
What will be an ideal response?
The mice would die because the DNA would be degraded, but since the RNA (“genetic material”) was
still present, the live avirulent cells would become virulent.
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An antigen-bearing pathogen that breaches normal flora surface barriers triggers __________ immunity. Fill in the blank(s) with the appropriate word(s)
The attraction between water molecules is called a:
a) ionic bond b) polar covalent bond c) hydrogen bond d) neutral bond e) nonpolar covalent bond f) peptide bond
Heterotrophs obtain carbon by
What will be an ideal response?
Individuals who do not express CCR5 are highly resistant to infection by HIV
Indicate whether the statement is true or false