A section of liver stained with the Grocott stain shows diffuse black staining over the entire section, making it difficult to see organisms. This could most likely be corrected in the future by treating liver sections with:
a) decreased concentration of chromic acid
b) diastase prior to beginning the stain
c) a more dilute solution of methenamine silver
d) a longer time in the gold chloride
Answer: b) diastase prior to beginning the stain
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The kelp shown in the accompanying figure represents the ____ stage in its life cycle
a. spore-bearing b. gamete-forming c. haploid d. motile e. feeding
Recall Stiling and Drake's experiments using chambers with elevated CO2. What are the implications of their experiment for farmers in the coming decades, if CO2 levels rise as predicted?
A. Farmers will see lower crop productivity and nutrition, in addition to more insect damage. B. Farmers will see higher crop productivity and less insect damage, but the crops will be less nutritious. C. Farmers will see higher crop productivity, but there will be more insect damage and the crops will be less nutritious. D. Farmers will see higher crop productivity and nutrition, but there will be more insect damage.
A man presents to the physician's office complaining of irritation in the genital area. Examination reveals a bright red rash with raised pustules with clear fluid. Upon questioning, the man reports he has recently been sexually active. What is the most
likely diagnosis based upon the appearance of the genital lesions? A) genital warts caused by HPV B) chlamydia C) gonorrhea D) genital herpes caused by HSV-2 E) syphilis
T or F: The dark banding seen in muscle tissue is the result of actin
What will be an ideal response?