Streptococcus pneumonae can be diferentiated best from the viridans group of streptococci by
A. Bile solubility
B. Colonial morphology
C. Gram stain
D. Hippuricase and ninhydrin
Ans: A. Bile solubility
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The following F1 cross is made: BBGg × Bbgg. Which is not a possible outcome in the F2 generation?
A. BBGg B. BbGg C. BbGG D. BBgg
When a drop of food coloring is placed in a container of clear water, the colored dye molecules ____
a. diffuse to a different location by osmosis b. diffuse to a different location by active transport c. concentrate at the top of the container d. diffuse equally throughout the container e. stay at the bottom of the container
A community and its physical environment are often referred to as a(n) ________
Fill in the blank(s) with correct word
The wing of a penguin is homologous to the wing of a butterfly.
a. true b. false