If a bone is immersed in a weak acid such as vinegar for several days, its inorganic components will dissolve. What will be the result of such an experiment?
A. The bone will dissolve completely.
B. The compact bone will dissolve, leaving only the inner spongy bone.
C. The bone will become extremely brittle.
D. The bone will become soft and bendable.
E. The spongy bone will dissolve, leaving only the outer compact bone.
D
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Sympathetic postganglion fibers that innervate the small intestines originate from the
A) inferior mesenteric ganglion. B) cardiac plexus. C) celiac ganglion. D) sacral splanchnic nerves. E) superior mesenteric ganglion.
The two strands of a DNA molecule have opposite orientation
Indicate whether the statement is true or false
What structures are used for direct cell to cell signaling?
A. Gap junctions B. Tight junctions C. Desmosomes D. Exocytosis vesicles
Which stage of the cell cycle is characterized by the sister chromatids reaching the opposite poles and uncoiling to form chromatin?
A) Anaphase B) Prophase C) Telophase D) Metaphase E) Interphase