Plasmodium is a(n)____
a. apicomplexan
b. diatom
c. ciliate
d. dinoflagellate
e. flagellated protozoan
ANSWER: a
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Chemical synthesis of DNA:
A. requires attachment of a starting nucleotide to a glass or polystyrene bead through its 5' phosphate. B. proceeds in the 5' to 3' direction. C. requires transient protection of the nucleotide's functional groups by chemical modification.These protective modifications are reversible. D. requires that the chemical group used to protect the 3'OH of the pentose is removed at the beginning of each cycle. E. can be used to synthesize small chains of nucleotides up to 10 bases.
Which of the following is not a step in bacterial nucleotide excision repair (NER)?
A. The UvrA2UvrB complex creates a single-stranded bubble at the damage site to which UvrA subunits are tightly bound and the UvrB subunit dissociates. B. The UvrA2UvrB complex scanned the DNA for damage. C. Pol I fills the gap created by the removal of the damaged strand and the DNA is sealed by ligase. D. UvrC (exinuclease) nicks the damaged strand on one side of the damage randomly. E. UvrD (helicase) unwinds and releases the damaged strand.
____ are phagocytes that engulf bacteria and cellular debris.
A. Eosinophils B. Leucocytes C. Monocytes D. Platelets E. Neutrophils
Which of the following could result in hemolytic disease of the newborn?
A. Rh-negative mother and Rh-negative father B. Rh-positive mother and Rh-positive father C. Rh-positive mother and Rh-negative father D. Rh-negative mother and Rh-positive father E. either Rh-positive mother and Rh-negative father or Rh-negative mother and Rh-positive father