Which vitamin begins its synthesis in the skin when the skin is exposed to ultraviolet light?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
E. Vitamin E
Answer: D
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The three structural components of a nucleotide are a pentose, a phosphate group, and a ________ base
A) nucleic B) hydrophilic C) hydrochloric D) nitrogenous E) sulfuric
Many species of zooplankton possess large droplets of lipid, typically in the form of __________, to increase their buoyancy
A) Cholesterol B) Squalene C) Triglycerides D) Wax esters Fill in the blank with the correct answer.
The type of organic molecule that can replicate is a
A) nucleic acid. B) lipid. C) protein. D) carbohydrate.
If the ET tube has been positioned properly in the trachea:
A) breath sounds should be somewhat louder on the right side and the epigastrium should be silent. B) you should not see vapor mist in the ET tube during exhalation when ventilating with a bag-mask. C) breath sounds should be loud at the apices of the lungs but somewhat diminished at the bases. D) the bag-mask device should be easy to compress and you should see corresponding chest expansion.