Compared to malaria, schistosomiasis infections are ________ numerous and ________ deadly
a. less / less
b. less / more
c. more / less
d. more / more
Answer: A
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A monoclonal antibody reacts against____
a. a single antigenic determinant b. different epitopes on the same antigen c. different antigens of the same organism d. a single type of pathogen e. different types of macromolecules on the same pathogen
The expression of genetic traits is referred to as the organism's ________.
A. proteome B. proteotype C. genotype D. genome E. phenotype
The cells that surround stomata are:
a. endodermal cells b. guard cells c. mesophyll cells d. vascular bundle cells e. vessel cells
What observation did Dr. Katsusaburo Yamagiwa make to lead him to believe that chemicals cause cancer?
A. He observed that cancer rates were 40 times higher in smokers than in nonsmokers. B. He observed that when coal tar extracts were applied to rabbit skin, cancers eventually developed. C. He observed that chimney sweeps exhibited frequent cancer of the scrotum. D. He observed unusual tumors of the nose in snuff users and suggested tobacco as the cause.