Which molecule do Bexxar and Zevalin antibodies attack?
a) EGF receptor
b) actin
c) CD20
d) collagen
e) myeloid protein
Ans: c) CD20
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Trisomics are observed in humans; monosomics are not. Why?
What will be an ideal response?
Which of the following statements is incorrect regarding the effects of rubella and rubeola in different populations?
A. Infection during pregnancy with either of these viruses can cause serious injury to the fetus. B. Congenital rubella is least serious if it is contracted during the final trimester of pregnancy. C. A six-year-old child infected with rubeola will experience fever, cough, and a rash, and barring complications, should recover in a few weeks. D. A 30-year-old man infected with rubella will experience severe symptoms and require constant medical attention for several weeks.
By definition, how much salt does fresh water contain?
A) less than 0.0001% B) less than 0.1% C) about 1% D) absolutely none
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and which of the following atoms or molecules of the last nucleotide in the polymer?
a) the 3' OH b) a nitrogen from the nitrogen-containing base c) C6 d) the 5' phosphate