Cardiac output is determined by:
a. blood volume.
b. venous return.
c. blood volume and venous return.
d. stroke volume only.
e. stroke volume and heart rate
e
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The general order of classification below the domain or kingdom level is
A. phyla, class, family, order, genus, species. B. phyla, order, class, family, genus, species. C. phyla, order, family, class, genus, species. D. phyla, class, order, family, genus, species.
Chemical reactions that have a positive G are ____
Fill in the blank with the appropriate word.
Which of the following mechanisms helps prevent gastric juice from digesting the stomach lining?
A) mucus coating the inside surface of the stomach B) contractions of the stomach constantly moving chyme into the small intestine C) the continuous secretion of gastric juice D) the inactivation of pepsin by hydrochloric acid
_________ occurs when two or more species live intimately together with their fates linked
Fill in the blank(s) with the appropriate word(s).