A drug that disrupts a microbial function not found in animal cells usually has a higher therapeutic index.
Answer the following statement true (T) or false (F)
True
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Which of the following is not a defense of the genitourinary tract?
A. Lysozyme B. IgA C. Mucus secretions D. IgG E. Flushing action of urine
Cell biology emerged from which of the following fields of biology?
A) biochemistry B) cytology C) genetics D) biochemistry, cytology, and genetics E) cytology and biochemistry
Suppose that you examine a vial of 100 flies that are all offspring from a single genetic cross. Suppose also that you see that all the females present are red-eyed and all the males present are white-eyed. The allele for red eye colour (Xw+) is dominant over the allele for white eye colour (Xw). Which of the following describes the genotypes of the parents?
a. Xw+Xw; XwY b. XwXw; Xw+Y c. Xw+Xw+; XwY d. Xw+Xw; Xw+Y
Deoxyribose has a carbon atom that is not part of the pentose ring. In a nucleotide, what is attached to this carbon?
A. three hydrogen atoms B. a nitrogenous base C. a phosphate group D. one hydrogen atom