Shingles is a disease observed mainly in the elderly that is a reactivation of which of the following?
A. herpes
B. polio
C. chickenpox
D. AIDS
C. chickenpox
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Extracellular fluid includes
(a) interstitial fluid. (b) plasma. (c) intracellular fluid. (d) both a and b.
Lake Ontario is home to a species of catfish with green and brown phenotypes, of which the green variant is more abundant, and the brown variant is more susceptible to predation. An angler accidentally releases brown catfish into a nearby pond where only green catfish had previously existed, and the brown catfish quickly supplant the native green catfish population there. The exact reason for the brown catfish’s newfound success is unknown, but it is possible that they are better able to hide from predators in the brown silt and thicker foliage that exists in the pond. What principle would this demonstrate?
a. directional selection b. absolute fitness c. relative fitness d. diversifying selection
Fats high in unsaturated fatty acids tend to be solid at room temperature
__________________ Indicate whether the statement is true or false.
In excreted urine, a reliable "marker" that a pregnancy has initiated is _____
A) progesterone B) estrogen C) follicle-stimulating hormone D) human chorionic gonadotropin (hCG)