Which of the following is the best feature that allows moray eels to be successful hunters?
a. Their ability to swallow items larger than their heads.
b. Their ability to fit into small holes in spite of their large body.
c. Their habit to ambush when they hunt.
d. Their jaw arrangement.
Ans: d. Their jaw arrangement.
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Chromatin remodeling refers to the process by which:
A. nucleosomes are repositioned to expose different stretches of DNA to the nuclear environment. B. DNA strands are "straightened out" to allow access to the proteins that carry out transcription. C. DNA strands are "unzipped" to allow access to the proteins that carry out transcription. D. methylation occurs in CpG islands. E. mutations change DNA structure and therefore chromatin structure.
Arrange the steps of an allergic response in the proper order
1) Allergic symptoms appear. 2) Allergen binds with IgE. 3) IgE combines with mast cell receptors. 4) Mast cells release histamine. 5) Plasma cells sensitized.
a. 5, 3, 2, 4, 1 b. 1, 5, 2, 4, 3 c. 5, 2, 4, 3, 1 d. 1, 4, 5, 2, 3 e. 4, 5, 2, 3, 1
Of the following invertebrate groups, the group most closely related to the chordates is the _____
a. annelids b. mollusks c. crustaceans d. echinoderms e. cnidarians
carbon cycle: biomass
What will be an ideal response?