Which of the following is NOT required for passive transport?
A. membranes
B. concentration gradients
C. molecules
D. bilayers
E. energy
Answer: E
Biology & Microbiology
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Which of the following diseases CANNOT easily be controlled by vector elimination?
A) yellow fever B) dengue fever C) rabies D) plague
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The exchange of genetic material during crossing over causes which of the following?
A) genetic variation B) stasis C) heterozygosity D) homozygosity
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Tumors that arise from mesenchymal cell types are called
a) carcinomas b) lymphomas c) sarcomas d) adenocarcinomas
Biology & Microbiology
The immunoglobulin class that has a dimer form found in mucus, saliva, colostrum, and other body secretions is
A. IgD. B. IgA. C. IgG. D. IgM. E. IgE.
Biology & Microbiology