Which of the following statements about bone and its structure is NOT correct?
A. Bone contains an extracellular matrix of collagen fibers and inorganic calcium phosphate crystals.
B. Bone tissue is not living because it contains inorganic calcium phosphate crystals.
C. Bone tissue is a special form of connective tissue.
D. Bone tissue serves as a reservoir for calcium and phosphate ions.
E. Bone marrow is a reservoir for blood stem cells
B. Bone tissue is not living because it contains inorganic calcium phosphate crystals.
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The fluid mosaic model proposed by Singer and Nicolson in 1972 explained that
A. the cell membrane was composed of lipids and proteins. B. the cell membrane was composed of a phospholipid bilayer between two layers of globular proteins. C. the cell membrane was composed of a phospholipid bilayer with globular proteins actually inserted into the bilayer. D. the cell membrane was composed of a phospholipid bilayer but the polar ends of the phospholipid molecules were reversed.
How does it relate to the question?
What will be an ideal response?
Generally the respiratory system in birds
A. is a one-way circulation of air so constant oxygen absorption can meet the high oxygen demand. B. resembles the positive pressure system of a frog. C. is identical to the human breathing system. D. is merely accelerated by the flight muscles.
The cellular basis for bacterial resistance to antimicrobics include
A. synthesis of enzymes that alter drug structure. B. prevention of drug entry into the cell. C. alteration of drug receptors on cell targets. D. bacterial chromosomal mutations. E. All of these choices are correct.