A good Grocott methenamine silver stain shows organisms with a crisp black cell wall and a visible internal structure
a. true
b. false
Answer: a. true
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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.
Which of the following contain enzymes, are the
main organelles of intracellular digestion, and can digest whole cells? a. Golgi bodies b. vesicles c. peroxisomes d. lysosomes e. endoplasmic reticula
Flowers:
a. Are structures of plants that are only ornamental and have no reproductive value in plants b. Produce both pollen and egg cells c. Produce pollen only d. Produce egg cells only e. Are produced by both gymnosperms and angiosperms
In the analysis of quantitative traits, positions on chromosomes called quantitative trait loci (QTLs) are often discussed. In the same context, restriction fragment length polymorphisms (RFLPs) are also discussed. What is the relationship between QTLs
and RFLPs? What will be an ideal response?