There are only one pair of tonsils in the human body?
a. true
b. false
Ans: b. false
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Lipids are used for which of the following?
A) to form essential structural components of cells B) to provide roughly 10 times as much energy as carbohydrates C) to help reduce body temperature D) to help protect the skeleton E) to carry genetic information
Visual and hearing receptors are irreplaceable, but taste and olfactory receptors are continuously renewed
Indicate whether the statement is true or false
What region of the mammalian kidney collects urine after its formation?
a. Renal pelvis b. Renal medulla c. Renal cortex d. Ureter
Which of the following is true during the resting membrane potential?
A. Sodium ion concentration is greater inside cells. B. Negatively charged proteins are more concentrated outside the cell. C. A greater concentration of calcium ions is found inside the cell. D. Potassium is concentrated primarily inside the cell. E. None of these choices reflect what occurs during the resting membrane potential.