Which of the following characteristics differentiates mast cells from neutrophils and monocytes?
A. Mast cells participate in the inflammatory response.
B. Mast cells do not act as phagocytes.
C. Mast cells are derived from bone marrow.
D. Mast cells originate as stem cells.
Answer: B
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Several species of fireflies are active on the same summer nights in the same fields. Males and females recognize one another by their distinctive flashing patterns. This is an example of what kind of reproductive isolation?
A. pre-zygotic, behavioral isolation B. pre-zygotic, temporal separation C. pre-zygotic, ecological separation D. post-zygotic, lock and key E. post-zygotic, ecological separation
A set of genetic markers located close together on a single ____________________ is called a haplotype
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Which of the following is the second step in gene mapping?
A. Target DNA removed from cells and isolated B. Cloning host treated with calcium chloride and receives plasmid C. Separate DNA fragments with gel electrophoresis D. Desired protein is produced by cloning host E. Gene is amplified by multiplication of cloning host
A salt ________ refers to a herbaceous plant community thriving in the intertidal zone, typically along the fringe of estuaries and islands along the coast at temperate latitudes
Fill in the blank(s) with correct word