Aristotle's lantern is a tooth-bearing structure of the
a. sea stars.
b. tunicates.
c. acorn worms.
d. sea urchins.
a
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If immersion oil was replaced with water, what would happen?
A. The refractive index of water would be greater than air but less than oil, improving resolution less than oil. B. The refractive index of water would be less than that of air, decreasing resolution. C. The refractive index would increase, improving resolution. D. There would be no difference.
Assume that a cross is made between tall and dwarf tobacco plants
The F1 generation showed intermediate height, whereas the F2 generation showed a distribution of height ranging from tall to dwarf, like the original parents, and many heights between the extremes. These data are consistent with which one of the following modes of inheritance? A) multiple-factor inheritance B) hemizygosity C) codominance D) alternation of generations E) incomplete dominance
The molecule serving as mRNA can be incorporated in the newly synthesized virus capsids of all of the following except
a. 1 strand RNA picornaviruses. b. 1 strand RNA togaviruses. c. 2 strand RNA rhabdoviruses. d. double-stranded RNA reoviruses. e. Rotavirus.
Laboratory cultivation of obligate anaerobes requires reducing media or special growth chambers filled with inert gases
Indicate whether the statement is true or false