An increased concentration of nitric oxide within a vascular bed is associated with
A) vasoconstriction.
B) vasodilation.
C) narrowing of the arteries.
D) a reduction in blood flow in that region.
E) a decreased amount of blood in the capillaries of that vascular bed.
Ans: B) vasodilation.
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The allele underlying sickle-cell disease affects the structure of the ____ molecule inside cells
Fill in the blank with the appropriate word.
What are the three components of the insect body plan?
a. Head, cephalothorax and walking legs b. Cephalothorax, walking legs and telson c. Head, thorax and tail d. Head, thorax and abdomen e. Chelicerae, abdomen and telson
Rarely, a chromosome's structure becomes altered when part of it undergoes __________,
__________, __________, or __________. Fill in the blank(s) with the appropriate word(s).
What disease is associated with Clostridium tetani?
A) Botulism B) Tetanus C) Anthrax D) Leprosy