Once the T3 and t4 are formed on the thyroglobulin the transfer of the iodinated protein from the lumen into the follicular cell takes place via
a) Endocytosis
b) Passive diffusion
c) All of the above
d) None of the above
Ans: a) Endocytosis
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Which of the following statements concerning the microbial loop is not true?
A. Microbes consume dissolved organic matter. B. Microbes constitute particulate organic matter for zooplankton consumption. C. Marine viruses contribute to the production of dissolved organic matter. D. All of the choices are correct.
The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is ________.
A. sanitization B. disinfection C. antisepsis D. sterilization
Which nucleotide molecule functions as an energy carrier in the cell?
What will be an ideal response?
Why is combination drug therapy for HIV/AIDS less likely to lead to resistance than single drug therapy?
A. There are fewer side effects associated with combination drug therapy, and the appearance of resistance is directly related to the severity of side effects. B. The likelihood of one virus spontaneously mutating to be resistant to several different drugs at the same time is extremely small. C. In the presence of multiple drugs, the mutation rate of HIV decreases. D. The drugs improve the immune system so that it is better able to find and remove virus particles.