The acid-fast stain is an important diagnostic tool for detecting the causative agent(s) of
A) gonorrhea.
B) malaria.
C) plague.
D) tuberculosis and leprosy.
E) Lyme disease and necrotizing fasciitis.
Answer: D
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Which of the following isnot true of the fruit fly Hedgehog (Hh) protein?
A. Hh is a member of the Wnt signaling pathway. B. Hh expression is activated by the transcription factor engrailed (en). C. Hh is secreted and interacts with Wg-producing cell receptors. D. Hh functions as a signaling molecule at segment boundaries.
Consider the Calvin-Benson cycle and the noncyclic photosynthetic pathway. Why is the cyclic
pathway so important? What will be an ideal response?
What does statistical analysis of experimental results determine?
A) the amount of bias in the experimental design B) the likelihood that the results are due to the experimental treatment C) whether the experiment proves that the hypothesis being tested is correct D) whether the proper controls were used in the experiment
Which one of the following insect organ systems has placed the greatest limitation on their body size?
A. excretory system B. nervous system C. digestive system D. reproductive system E. respiratory system