Which of the following is not a body cavity?
a. Abdominal
b. Thoracic
c. Spinal
d. Diaphragm
e. Pelvic
d
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Estrogen is a(n) _____
A) peptide hormone B) amine derivative C) lipid-soluble hormone D) iodinated protein hormone made by the thyroid gland E) gaseous neurotransmitter
Water is an ideal solvent in cells because it
a. has low heat of vaporization. b. is a polar molecule that can form hydrogen bonds with itself and with other polar molecules. c. dissolves nonpolar molecules. d. contracts when it freezes.
According to the biological species concept, two groups of organisms that are unable to form fertile, viable hybrids are considered to be different
A. species. B. hybrids. C. kingdoms. D. cohabitants. E. races.
Denaturation disrupts the secondary and tertiary structure of proteins. However, denaturation is not strong enough to disrupt what interaction that is relevant to protein structure?
A. ionic bonds B. van der Waals attraction C. peptide bonds D. hydrophobic exclusion E. hydrogen bonds