________ are an important group of local hormones that produce a variety of effects, including uterine contractions, inflammation, pain sensations, and cervical dilation
Fill in the blank(s) with correct word
Prostaglandins
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Choose the observations supporting the hypothesis that the initiation of eye development in animals occurred only once.
_____ In some organisms, Pax6-related genes are associated with development of the forehead. _____ A large number of different organisms use Pax6-related genes in eye development. _____ The DNA sequence of Pax6-related genes in animals is uniformly similar. _____ The common ancestor of animals had a complex eye.
The bond that holds amino acids together is called
A. glycosidic bond B. hydrogen bond C. ionic bond D. peptide bond
Consider the following hypothetical situation. Researchers doing influenza surveillance involving molecular analysis of recent isolates of the virus notice a major change in the H and N antigens. What is a likely outcome?
A. The number of cases of influenza will increase significantly. B. The number of cases of influenza will decrease significantly. C. There will be no significant change in the number of cases of influenza.
What type of cell is activated in lymphatic tissue by macrophages presenting antigens during a viral infection?
What will be an ideal response?