Because of their role in material exchanges, the _______________ are considered to be the functional units of the cardiovascular system
Fill in the blank with correct word.
capillaries
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The fluid stored inside cells is referred to as extracellular fluid (ECF)
Indicate whether the statement is true or false
The human immunodeficiency virus (HIV), which causes the disease known as AIDS, selectively infects ________ cells
A) B B) plasma C) cytotoxic T D) helper T E) suppressor T
Cell A is a gland cell that makes and secretes proteins. Cell B is another type of cell that synthesizes and secretes steroids. If you were to look at electron micrographs of the two cells, what differences would you expect to see?
A. Cell A would have more granular endoplasmic reticulum than cell B. B. Cell A would have fewer secretion granules than cell B. C. Cell A would have more agranular endoplasmic reticulum than cell B. D. Cell B would have more granular endoplasmic reticulum than cell A. E. The two cells would most likely look identical.
Denaturation is
A. a change in the three-dimensional structure of a protein. B. a negatively charged ion. C. a substance that conducts electricity when placed in solution. D. a positively charged ion. E. a combination of atoms held together by chemical bonds.