The tissue found in the center of a root is ____
a. xylem
b. endodermis
c. cortex
d. phloem
e. pith
ANSWER: a
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The chronic inflammatory process involving the gums and tissues around the teeth is called
A. dental caries. B. periodontal disease. C. dental plaque. D. root caries.
Which of the following statements best sums up the results of the Human Genome Project?
a. All the proteins in the human body have been sequenced, but not all functions are known b. All 28,976 genes and their functions have been decoded. c. The human genome was patented in 2000 by Walter Gilbert, one of the inventors of sequencing. d. About 99% of the genes have been sequenced but functions of most are unknown.
The spinal cord is considered to be hollow due to:
a. the presence of ventricles throughout its length. b. the presence of a central canal. c. the presence of an encased vessel. d. the presence of a thin outer cell layer. e. It is not hollow.
Which of the following may cause reactivation of varicella-zoster virus as shingles?
A) All of these choices are correct B) Developing malignancy C) Surgery D) X-ray treatments E) Immunosuppressive conditions