Microtubules
a. serve as a mechanical stiffener for microvilli.
b. are specialized to detect sound and positional changes in the ear.
c. form nonmuscle contractile assemblies.
d. play a structural role in parts of the cell subject to mechanical stress.
e. none of these answers.
E
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With ADH added but in the absence of aldosterone, _______.
A) urine volume decreased B) the potassium concentration increased C) the potassium concentration increased and urine volume decreased D) the potassium concentration decreased and urine volume decreased E) the potassium concentration decreased
Which of the following is NOT true of the structure of long bones?
A. The periosteum surrounds the entire bone, even where there is articular cartilage. B. Spongy bone makes up the internal portions of the epiphyses. C. The diaphysis and surfaces of the epiphyses consist of compact bone. D. Long bones contain an epiphysis at both ends. E. All of the following are true of the structure of a long bone.
Which of the following combining forms means thirst?
A. cortic/o B. crin/o C. dips/o D. aden/o
A molecule that has just donated electrons ________.
A. acted as a reducing agent B. is now considered reduced C. acted as an oxidizing agent D. gave electrons to the reducing agent