Which of the following will help cool the body?
A. decreased blood flow to the skin
B. absorption of excess sweat
C. evaporation of sweat from the skin's surface
D. absorption of ultraviolet light rays by the skin
E. contraction of the arrector pili muscles
C
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The choroid plexus is composed of
A) lymphatic vessels. B) blood vessels. C) nerve fibers. D) ganglia. E) subarachnoid granulations.
Match the following:
A) Neutrophil B) Monocyte C) Hemoglobin D) Agglutination E) Factor VIII 1) Polymorphonuclear leukocyte. 2) White blood cell with dark-staining nucleus. 3) Protein capable of changing shape and color in the presence of O2. 4) Adverse reaction of donor blood cells with recipient plasma. 5) Lacking in hemophilia type A.
When an enzyme catalyzes a chemical reaction, ________.
A. the enzyme binds to the substrate's active site B. amino acids in the enzyme's active site interact with substrate molecules to create a product C. amino acids in the substrate allow for interaction with the product D. the enzyme's active site binds to the product
Osteoblasts are ________, whereas osteocytes are ________.
A. bone-forming cells; bone-dissolving cells B. bone-forming cells; mature bone cells C. mature bone cells; bone-forming cells D. bone-dissolving cells; mature bone cells