Which of these is not produced by phagocytes to destroy engulfed microorganisms
a. hydroxyl radicals
b. superoxide anion
c. hydrogen peroxide
d. histamine
Ans: d. histamine
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________ are intracellular bacteria that are usually localized to specialized organs within their host
A) Symbiodinium B) Arbuscules C) Epibionts D) Endosymbionts
The physical structure that is formed when two chromatids cross over is called a(n) _______
A. synaptonemal complex B. bivalent C. karyotype D. chiasma
The female plant structure on which a pollen grain must land for sexual reproduction to occur is the:a
style. b. ovary. c. stigma. d. anther. e. style.
Skeletal muscle and cardiac muscle are similar in that they are both
a. made of highly branched cells. b. made of long parallel cells. c. striated. d. under involuntary control. e. under voluntary control.