A sample of tissue from an injury shows a large number of basophils. This would indicate that the tissue was ________.
A) abscessed.
B) being rejected.
C) inflamed.
D) infected by viruses.
E) infected by multicellular parasites.
C) inflamed.
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Imagine someone who drank too much water before running a race. Their very watery blood would have
A. high viscosity and therefore have high resistance. B. high viscosity and therefore have low resistance. C. low viscosity and therefore have high resistance. D. low viscosity and therefore have low resistance.
According to the equation expressed as Ohm's law, which of these would cause the greatest increase in current?
A. Reducing voltage by half and doubling resistance B. Quadrupling both voltage and resistance C. Doubling both voltage and resistance D. Reducing both voltage and resistance by half E. Doubling voltage and reducing resistance by half
Blood acidity results in depression of the CNS, whereas blood alkalosis results in overexcitement of the CNS
Indicate whether the statement is true or false
Which of the following are common means by which binding of an extracellular chemical messenger with a cell's receptor brings about a desired intracellular response?
a. opening or closing of specific channels to regulate ionic movement across the plasma membrane. b. activation of an intracellular second messenger system. c. alteration of protein shape and function as a result of phosphorylation. d. only (a) and (b) above. e. all of these answers.