When exposed to ultraviolet light, keratinocytes convert a steroid precursor into ________, a molecule that is crucial for regulation of calcium levels
A. calcitriol
B. cholecalciferol
C. calcitonin
D. creatine
E. phosphorus
B
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What is/are the major role(s) of the phospholipid bilayer?
A) the formation of a barrier that is selectively permeable to lipid-soluble molecules and to provide a framework for membrane proteins B) the absorption of fats only C) to carry water-soluble molecules through a hydrophobic environment only D) to provide a framework for membrane proteins only E) the formation of a barrier that is selectively permeable to lipid-soluble molecules only
The greater the ____________________ of the plasma membrane for a given ion, the greater the tendency for that ion to drive the membrane potential toward the ion's ____________________ potential
Fill in the blank(s) with correct word
Examine the meiotic diagram at the right. Describe in detail what's wrong with it
What will be an ideal response?
The majority of sensory information is relayed to the cerebrum by the ________.
A. medulla oblongata B. pons C. thalamus D. hypothalamus