Tuberculosis may be diagnosed using a(n) ________ on sputum (lung fluid) samples
A) direct fluorescent antibody test
B) complement fixation test
C) neutralization test
D) immunochromatographic assay
E) viral hemagglutination test
A
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Which of the following is not associated with mRNA processing in eukaryotes?
A) addition of a 5' methyl guanosine cap B) 3' polyadenylation C) removal of introns D) removal of exons
Transgenic mice engineered to contain the mutant versions of the huntingtin gene with various numbers of _____________________ repeats have phenotypes similar to humans affected by Huntington disease
Fill in the blank(s) with correct word
During the S phase of interphase, the state of a eukaryotic chromosome can be described as
A) a single continuous linear double helix. B) a double helix replicating semiconservatively. C) a double helix replicating conservatively. D) a triple helix replicating semiconservatively. E) two linear single-stranded molecules.
The function of helicase enzymes is to ____.
A. break hydrogen bonds between the two strands of the DNA molecule prior to replication B. rewind the two DNA molecules after replication C. remove bases that might have been inserted incorrectly D. seal new short stretches of nucleotides into one continuous strand E. fragment old DNA that is no longer of use to the cell