Match the following items with the correct phrases.
_______1. Fixed or tissue ____________________ are called histiocytes.
_______2. Like mast cells, these cells release histamine and other chemical mediators during type I hypersensitivity reactions.
_______3. Increased numbers of these cells are found in the peripheral blood stream during allergic reactions and helminth infections.
_______4. These cells are also called polymorphonuclear leukocytes, polys, or PMNs.
_______5. These cells are monocytes rather than granulocytes.
a. basophils
b. eosinophils
c. macrophages
d. neutrophils
1. c. macrophages
2. a. basophils
3. b. eosinophils
4. d. neutrophils
5. c. macrophages
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Ovulation is triggered by surge of which of the following hormones?
A. luteinizing hormone B. follicle stimulating hormone C. estrogen D. testosterone E. progesterone
A collection of clones containing all the DNA sequences carried by an individual is called a(n) ____________________
Fill in the blank(s) with correct word
Which of the following applications, used by farmers to control weeds, relies upon turning the soil over?
A) tilling B) mulching C) spraying herbicides D) irrigation
Which of the following is not a typical attribute of an early-successional species?
A) rapid growth B) excellent dispersal ability C) large seed size D) shade-intolerance E) ability to colonize unexploited environments