Civil defense officials usually stock large supplies of nonradioactive iodine, which would be distributed in the event of a release of radioactive iodine. Please explain why
What will be an ideal response?
Radioactive iodine would be concentrated in the thyroid gland and possibly destroy the gland. The hope is that the nonradioactive form would dilute the effect of the radioactive iodine and protect the thyroid.
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Adult insects exchange respiratory gases primarily by means of:
a. spiracles only b. tracheal tubes and spiracles c. lungs d. gills e. body surface
Which of the following is not among the first line of defenses against infection?
a. resident bacterial populations d. skin b. tears, saliva, gastric fluid e. complement c. urine flow f. lysozyme
The most important physical characteristic of lipids with regard to living organisms is that they
A) are hydrophobic. B) are very large and therefore difficult to store. C) dissolve easily in water. D) are typically a form of waste product that is difficult to eliminate. E) are denser than water.
Children in the United States are vaccinated with the (IPV/OPV/PEP) to prevent polio. (Use all uppercase in your answer.)
What will be an ideal response?