A man is brought to the hospital suffering from nausea, vomiting, and severe stomach cramps. He had recently returned from a hiking trip in northern Minnesota
A sample taken from the man shows a single-celled flagellate organism that lacks mitochondria but has two nuclei. This organism is a(n)
A) excavate.
B) apicomplexan.
C) diatom.
D) euglenozoan.
E) green alga.
A
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Which would be most effective against Pseudomonas?
A. Alcohol B. Radiation C. Quaternary ammonium compounds D. Iodophors
Phage-encoded enzymes are
A. all produced simultaneously. B. produced in a sequential manner. C. strictly host enzymes. D. used to customize the cell for viral production. E. produced in a sequential manner AND used to customize the cell for viral production.
What are the two most common types of nonrandom mating?
What will be an ideal response?
Sturtevant provided genetic evidence for the existence of four pairs of chromosomes in Drosophila in which of these ways?
A) There are four major functional classes of genes in Drosophila. B) Drosophila genes cluster into four distinct groups of linked genes. C) The overall number of genes in Drosophila is a multiple of four. D) Drosophila genes have, on average, four different alleles.