Covalent bonds are formed when
A) atoms share electrons.
B) cations and anions are held together by their opposite charges.
C) electrons are exchanged between atoms.
D) hydrogen forms bonds with negatively charged atoms in the same or different molecules.
E) two or more atoms lose electrons at the same time.
A) atoms share electrons.
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A _________ joint allows movement in only one plane.
Fill in the blank(s) with the appropriate word(s).
The nasal complex consists of all of the following bones except the
A) zygomatic. B) ethmoid. C) sphenoid. D) frontal. E) maxillary.
Sensory information from all parts of the body is routed to
A) the prefrontal cortex. B) the cerebellum. C) the primary motor cortex. D) the somatosensory cortex. E) Broca's area.
Normal pH range for blood is 7.35 to 7.45. If blood pH falls below 7.35,
A. the number of red blood cells decreases. B. the blood becomes saltier. C. an imbalance called acidosis results. D. an imbalance called alkalosis results. E. nothing happens as this is an acceptable deviation.