Squamous epithelial cells ________
A) are as tall as they are wide, like cubes B) are thin and flat, like fish scales
C) are taller than they are wide, like columns D) have no nuclei
Answer: B
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The electrochemical gradient refers to
A. the difference in concentration of a substance between two areas. B. the difference in electrical charge between two areas. C. the resistance a membrane has to allowing any charged chemical to pass through it. D. the combination of electrical and chemical gradients between two areas.
The “vital centers” (the cardiac, respiratory, and vasomotor centers) are located in the:
a. pons b. midbrain c. thalamus d. medulla oblongata
What is the term used to describe the muscle action that pulls toward the midline?
A. Trapezius B. Superficialis C. Abductor D. Adductor
The species of modern humans is called ________.
A. Australopithecus B. Homo sapiens C. Homo habilis D. Homo erectus E. early Homo