The most serious infectious disease in terms of
deaths per year is (are)
a. tuberculosis.
b. diarrheas.
c. AIDS.
d. acute respiratory infections.
e. tetanus.
Answer: d
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Metastatic cancer cells:
A. are able to leave the tumor where they originated and travel to distant locations to set up new tumors at distant sites. B. have lost their adhesion to the extracellular matrix, freeing them from being confined to the original tumor. C. become malignant when they cross the capillary basal lamina. D. only need to cross a single layer of capillary endothelial cells to form tumors at distant sites. E. All of these choices are correct.
Smegma is produced by which gland?
A. Skene's B. Tyson's C. Bartholin D. Cowper's
ulcer's occur in large intestine and rectum
What will be an ideal response?
Which statement about the X chromosome is correct?
A. The X chromosome carries only the recessive genes in males. B. X and Y are different in size but carry nearly equal numbers of genes. C. X chromosome inactivation only occurs in females. D. The X chromosome carries only gender-related genes. E. The X chromosome carries the SRY gene.