Which of the following terms or names has nothing to do with the use of two drugs simultaneously?
A) antagonism
B) Salvarsan
C) Septra
D) synergism
B) Salvarsan
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Can an individual receive two STR alleles from the same parent?
a. yes b. no
Which of the following provides the eye with its best defense against microorganisms?
A. Conjunctiva B. Lymphocytes C. Eyelids D. Tears E. Eyelashes
Refer to the accompanying figure. What does the photoperiodic response of the plant in Row A suggest?
a. A brief dark period is the light cue that induces flowering.
b. A brief daylight period is the light cue that induces flowering.
c. A long uninterrupted daylight period is the light cue that induces flowering.
d. A long uninterrupted dark period is the light cue that induces flowering.
e. A determination cannot be made from the data provided.
If a tree's heartwood rots out, the tree will
A) not survive because the active xylem is destroyed. B) not survive because the active phloem is destroyed. C) replace the heartwood with sapwood to compensate for the damaged tissue. D) be weaker than normal and more likely to blow over in a storm.