Resident flora of the skin tends to fluctuate over time.
A) True
B) False
B) False
Resident flora of the skin tends to fluctuate over time.
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The classic experiment using isolated cells from two species of sponges provided evidence that:
A. Cell adhesion molecules are species specific. B. Sponge cells posses an extracellular matrix. C. Cell adhesion molecules are non-specific. D. Sponge cells have cell adhesion molecules.
Which of the following would be considered to be a synapomorphy of ferns, conifers, and flowering plants?
Given the following list of characteristics:
A. chlorophylls a & b
B. vascular tissue
C. seeds
D. flowers
The vast majority of workers in maquiladoras and Export Processing Zones are
A) children. B) women. C) men. D) the elderly. E) people of African descent.
The hormone erythropoietin acts to stimulate cells that are located in the ________ of an adult
A) blood B) kidneys C) spleen D) red bone marrow