Colonies of Streptococcus pneumoniae appear ?-hemolytic on blood agar media. Which one of the following statements explains this discrepancy?
a. The lot of blood agar may be expired.
b. Something may be wrong with the strain of S. pneumoniae since it should be ?-hemolytic on blood agar.
c. Something may be wrong with the strain of S. pneumoniae; it should be ?-hemolytic on blood agar.
d. No discrepancy is present. S. pneumoniae should be ?-hemolytic on blood agar.
D
S. pneumoniae produces ?-hemolytic on blood agar.
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In humans, patterns of inheritance are often studied using which of the following?
A. Dihybrid testcrosses B. Production of true-breeding lines C. Pedigree analysis D. Self-fertilization E. None of the answers are correct
CAM plants differ from C4 plants in that CAM plants ________ while C4 plants ________
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Answer the following statement(s) true (T) or false (F)
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A) the protein rhodopsin B) light-detecting mitochondria C) the protein troponin D) genes for the production of rhodopsin