What type of chemical bonds are found within
a water molecule?
a. hydrogen
b. ionic
c. polar covalent
d. nonpolar covalent
e. triple
C
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On a short-term basis, water loss in plants may be controlled by the
A. bending of the petioles on the leaves. B. closing of the stele in the roots. C. closing of the stomata in the leaves to limit transpiration. D. opening of the stomata in the leaves to allow more carbon dioxide to enter. E. opening the Casparian strips in the roots.
What is the diaphysis of a long bone?
The HIV virus contains all of the following components except ________
A) integrase B) double-stranded RNA C) single-stranded RNA D) reverse transcriptase E) protease
The atomic number of an atom is defined as the
A) number of neutrons in the atomic nucleus. B) total number of electrons and neutrons. C) total number of energy shells. D) number of protons in the atomic nucleus. E) number of electrons in the outermost energy level.