Which of the following will respond to steady pressure?
A) Hair cells
B) Olfactory receptors
C) Ruffini corpuscles
D) Meissner's corpuscles
E) Pacinian corpuscles
C
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________________ include fungi and certain bacteria. These organisms feed on dead organic matter, and play a vital role in the cycling of sulfur and carbon
A. Primary producers B. Primary consumers C. Secondary consumers D. Tertiary consumers E. Decomposers
The "lub" heart sound represents ____
a. a heart murmur b. closure of the atrioventricular valves c. closure of the semilunar valves
d. hypertension e. movement of actual heart muscle
____ are most responsible for the symptoms of inflammation
a. Cytotoxic T cells b. Macrophages c. Mast cells d. Neutrophils e. Eosinophils
Which of the following is true regarding hemoglobin?
a. It is a lipid. b. It contains iron. c. It raises the concentration of oxygen in the blood. d. It is present in all vertebrates and invertebrates. e. It is identical to hemocyanin.