What role does safranin play in the Gram stain procedure?
A) primary stain
B) mordant
C) decolorizing agent
D) counterstain
E) negative stain
D
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The DTP vaccine protects against _________.
A. tuberculosis B. diptheria C. polio D. two of the above E. all of the above
In the accompanying figure, note the variation in these closely related birds. What does this illustrate?
a. hybridization
b. macroevolution
c. hybrid inviability
d. adaptive radiation
e. allometric radiation
Meiosis is the process through which sex cells are produced. During which stage of meiosis could you see crossing over occurring in human gamete development?
A) metaphase I B) telophase II C) prophase I D) prophase II
Which of the following is an INCORRECT pairing?
A) protozoa; multicellular B) fungi; cell walls C) algae; aquatic and marine habitats D) prokaryotes; no nuclei E) viruses; acellular parasites