Treating malarial infections is theoretically difficult because:
A. the protozoal parasite is eukaryotic and therefore similar to human cells
B. there are several species of plasmodium
C. no single drug an target all the life stages of plasmodium
D. all of the above
Ans: D. all of the above
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Lysozyme is an important antimicrobial substance found at high levels in which food?
A. Fruits B. Fish C. Eggs D. Vegetables
The graph below represents the results of an experiment looking at mate preference in female
black widowbirds. The researcher used three groups of male birds: one with artificially
shortened tails, one with artificially lengthened tails, and the control group with unaltered tail
lengths.
Which of the following is not true about Methylococcus and Methylomonas?
A. They contain complex arrays of intracellular membranes when using methane. B. Most species are capable of forming cysts. C. They are strict anaerobes. D. All of the choices are correct.
Blood rich in oxygen is what color?
a. yellow b. pink c. bright red d. blue e. purple