The limitation associated with utilizing the Gram stain procedure includes all of the following except:
a. over decolorizing resulting in all organisms appearing gram negative.
b. formation of crystals in the stain appearing as gram-positive rods.
c. providing potential life-saving preliminary organism characteristics.
d. variable Gram staining characteristics based on organism viability in preparation.
C
All of the above are limitations associated with Gram staining except C. One of the primary ad-vantages to direct Gram staining is to provide the physician with preliminary information as to the morphotype and biochemical type of organism based on cell wall structure (differential staining), cell shape, and arrangement associated with specific organisms.
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In seed plants, the microspores become ___
a. ovules b. seeds c. pollen grains d. cones e. sperm cells
The application of ammonia fertilizers can alter soil
chemistry resulting mostly in the loss of __________ through ion exchange. a. iron and phosphorus b. nitrogen and hydrogen c. calcium and magnesium d. zinc and iron e. nitrates and nitrites
In a monohybrid cross with complete dominance, the F2 offspring should contain ____
a. two different phenotypes and two different genotypes b. two different phenotypes and three different genotypes c. three different phenotypes and two different genotypes d. three different phenotypes and three different genotypes e. two different phenotypes and one genotype
When antibodies or other substances in serum cross-react with the test reagents, a false positive result can occur.
Answer the following statement true (T) or false (F)