One mechanism that some animals use to limit heat loss in cold environments is
A. vasoconstriction of your veins.
B. increasing the volume of blood that leaves the ventricles with each beat of the heart.
C. vasodilation of arteries in your arms and legs.
D. vasoconstriction of arteries leading to your brain.
E. vasoconstriction of the precapillary sphincters in the skin.
Answer: E
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A bottle of Na in solution and a bottle of Cl in solution are mixed together and the water evaporated. What type of bond will be created between the atoms, and what will be the product?
A. Covalent bonds; sodium chlorine. B. Ionic bonds; table salt. C. Hydrogen bonds; sodium hydroxide. D. Carbon bonds; carboxyl groups.
The first evidence that the vasodilatory signal molecule was produced by _____ was in ______
a. ntiric oxide; 1998 b. endothelial cells; 1980 c. nitric oxide; 1980 d. endothelial cells; 1998 e. rabbit aorta; 1998
The societal challenges created by next-generation sequencing are related to
A) ethical questions of confidentiality and estimation of disease risk for individuals. B) the high cost of sequencing. C) the creation of genetically engineered babies. D) reliable data storage and analysis. E) ethical questions of confidentiality, estimation of disease risk for individuals, and reliable data storage and analysis.
________ traits are often polygenic.
Fill in the blank(s) with the appropriate word(s).