The central cavity of a tooth is filled with
A. dentin.
B. enamel.
C. pulp.
D. cementum.
E. calcium phosphate.
Answer: C
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DNA profiling
A. sequences the entire genomes of criminals. B. sequences genes that cause disease. C. analyzes 64 highly variable regions of the human genome. D. compares the most variable parts of the genome for a variety of applications.
Which of the following would be associated with the action of steroids on cells?
A) extracellular receptors with a specificity for only a single amino acid sequence on the hormone B) an enzyme that catalyzes the formation of cyclic AMP C) second-messenger systems D) a hormone-receptor complex that interacts directly with the cell's DNA
The area monitored by a single sensory neuron is called the ________ field.
Fill in the blank(s) with the appropriate word(s).
The pulmonary trunk receives blood from the right ventricle and conducts it toward the lung. The pulmonary trunk is a(n)
A. capillary. B. artery. C. vein.