Which of the following would not be considered a mutagen?
A. Ethidium bromide, a chemical that binds directly to DNA and deforms the double helix
B. Flavonoids, a family of compounds which can remove free radicals from cells
C. X-rays, which can break the bonds in DNA molecules
D. Nitrous acid, which can convert cytosine to uracil
Answer: B
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Ninety-two percent of blood plasma is made up of ________
A) None of the listed responses is correct. B) protein C) formed elements D) water
Which type of neuroglia attaches blood vessels to neurons or anchors neurons in place?
A) satellite cells B) astrocytes C) microglia D) oligodendrocytes
The thoracolumbar division is another name for the ________ division of the ANS.
Fill in the blank(s) with the appropriate word(s).
What type of burn is also referred to as a partial thickness burn?
A. Second-degree burn B. Third-degree burn C. Fourth-degree burn D. First-degree burn