What is the white opaque "moon" often found at the proximal end of a fingernail called?
A. Free edge
B. Eponychium
C. Nail body
D. Lunule
E. Nail root
Answer: D
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The structure of RNA differs from DNA in that
A) the backbone of RNA contains ribose. B) RNA contains pyrimidines but not purines. C) RNA contains purines but not pyrimidines. D) DNA contains pyrimidines but not purines. E) DNA contains purines but not pyrimidines.
Joey develops a medical condition that decreases his blood viscosity. Assuming no other change (e.g., no compensatory reflex), what happens to his blood pressure?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. Calcium carbonate crystal in the macula are called cristae. 2. Raised group of hair cells in the ampulla are called otoliths. 3. The round window separates the cochlear chamber from the middle ear. 4. The saccule is part of vestibule. 5. The oval window is covered by the stapes footplate.
What is the primary role of the carbonic acid-bicarbonate buffer system?
A) buffer the pH of the ICF B) contribute to the regulation of pH in both the ECF and ICF C) provide extensive buffering capability in the ICF of active cells D) prevent pH changes caused by organic (metabolic) acids E) provide the use of amino acid side groups in response to pH changes