Which of the following is NOT a major organ of the integumentary system?
A) hair
B) skin
C) nails
D) cartilage
Ans: D) cartilage
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Which of the following is a principle of the fluid mosaic model of cell membrane structure?
A) Phospholipids form a bilayer that is largely impermeable to water-soluble molecules. B) Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains. C) All proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell. D) The lipid bilayer is a solid at body temperature, thus protecting the cell.
List and explain the factors that influence gas diffusion in the lungs.
What will be an ideal response?
true or false? The three base sequence on the transfer RNA is the codon.
a. true b. false
What histological structure immediately surrounds a central canal in compact bone?
A) osteon B) lacunae C) Haversian system D) bone lamellae