What quantity of cerebrospinal fluid (CSF) is considered sufficient for the detection of tuberculous meningitis?
a. 1 mL
b. 5 mL
c. 10 mL
d. 20 mL
C
A sufficient quantity of specimen is most critical for the isolation of AFB from CSF. Very few organisms may be found in the CSF, which makes their detection difficult. At least 10 mL of CSF is recommended for recovery of mycobacteria.
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Why do scientists use model organisms?
What will be an ideal response?
Which of the following is a monomer of
protein?
a. nucleotide b. monosaccharide c. simple sugar d. amino acid e. ribose
In the mycorrhizal relationship, what does the
fungus receive from its partner?
a. sugars b. water c. minerals d. free cable e. more than one of these
If a mutant organism used mitosis to produce gametes, what would be the result of mating with a wildtype partner?
A. Progeny would be quadraploid, and almost certainly nonviable. B. The resulting progeny would be identical twins. C. Progeny would be normal -- this is a common occurrence in some phyla. D. Progeny would be triploid, and almost certainly nonviable.