Blood pressure is regulated by all of the following except:a
vasoconstriction.
b. vasodilation.
c. angiotensin.
d. aldosterone.
e. cortisone.
E
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Which of the following essential nutrients plays an critical role in the opening and closing of the stomatal aperture?
A) Fe B) Bo C) Mg D) H E) K
The major advantage of using artificial chromosomes such as bacterial artificial chromosomes (BACs) for cloning genes is that _____
A) plasmids are unable to replicate in cells B) only one copy of a plasmid can be present in any given cell, whereas many copies of a BAC can coexist in a single cell C) BACs can carry much larger DNA fragments than ordinary plasmids can D) BACs can be used to express proteins encoded by inserted genes, but plasmids cannot E) BACs are double-stranded, whereas plasmids are single-stranded
Soils are composed mostly of which of the following?
A. layers of many decaying elements B. fertilizers and other organic materials C. horse and cow manure D. layers of material mostly from rocks E. inorganic minerals and organic materials
Name the six major categories of animal nutrients
What will be an ideal response?