The cells of the lung that produce the substance that lowers surface tension are ________
Fill in the blank(s) with the appropriate word(s).
type II alveolar cells
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The germinal center of a lymphatic nodule contains proliferating B-lymphocytes and macrophages
Indicate whether this statement is true or false.
Starch is the
A. storage carbohydrate in plants. B. major nutrient for most body cells. C. nondigestible plant polysaccharide. D. storage carbohydrate in animals. E. sugar found in RNA.
Ionic bonds are formed when
A) atoms share electrons. B) electrons are completely transferred from one atom to another. C) a pair of electrons is shared unequally by two atoms. D) hydrogen forms bonds with negatively charged atoms. E) two or more atoms lose electrons at the same time.
What type of burn only involves injury to the superficial epidermis?
A) first B) second C) third D) fourth