One drawback associated with the fluorochrome stain method for detecting Mycobacterium is that:
a. it is less sensitive than the conventional carbolfuchsin stains.
b. it requires the smear to be initially ex-amined at lower magnifications.
c. many rapid-growers may not appear fluo-rescent with these reagents.
d. it increases the amount of time needed for examining smears.
C
One drawback associated with the fluorochrome stains is that many rapid-growers may not ap-pear fluorescent with these reagents.
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The ustilaginomycete Ustilago maydis is ________; plant-associated fungi grow in the ________ form but are yeastlike in the external environment.
Fill in the blank(s) with the appropriate word(s).
A bacteriophage transfers a random fragment of DNA of the previous host to the current host. This is an example of
A. the creation of an Hfr cell. B. generalized transduction. C. conjugation. D. specialized transduction.
Vitamin D is synthesized from cholesterol.
a. true b. false
Chargaff's rule states:
A. that there are 20 amino acids that make up all proteins B. that the ratio of carbon atoms to hydrogen atoms to oxygen atoms is 1:2:1 in carbohydrates C. that macromolecules are formed by dehydration synthesis reactions D. that lipids always will be hydrophobic molecules E. that in DNA molecules, the amount of adenine always equals the amount of thymine and the amount of cytosine always equals the amount of guanine