Which of the following mutagens is most different than the others in terms of its effect on DNA?
A. Planar mutagen that inserts between stacked bases
B. Acridine orange
C. Base analogue
D. Intercalating agent
Answer: C
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Which of the following germ layer-structure is mismatched?
A. mesoderm-notochord B. endoderm-lungs or respiratory tube C. ectoderm-epidermis D. mesoderm-digestive tract E. ectoderm-brain
Some RIPs are not as toxic as ricin. What is the main difference between toxic and non-toxic RIPs?
What will be an ideal response?
Carolus Linnaeus is considered to be the founder of __________, and he __________.
a. paleontology; believed in catastrophism b. uniformitarianism; believed the same geologic forces are operating today that occurred in the past c. the binomial classification system; thought that resemblances among different species reflected the pattern of their creation d. genetics; described the mechanism for descent with modification e. evolution; first proposed that acquired characteristics are inherited
)
A. These infections commonly occur in healthy individuals. B. E coli that causes UTIs is an example of a common opportunistic pathogen. C. Very young and very old patients are most susceptible to opportunistic infections. D. The presence of other pathogens in a patient has no effect on the development of opportunistic infections. E. Cancer patients are at a higher risk for opportunistic infections.