1.
16) On the molecule at right, which is the alcohol? b) II c) III d) IV II: H2N 17) Which is not a
macronutrient? I HO a) calories b) carbohydrates c) fat d) protein 18) A drug that reduces pain is
called a) analgesic b) antipyretic c) anti-inflammatory- d) stimulant 19) Which is a line angle
drawing for isohexane? a) c) b) d) 20) Histamine is part of the human immune response. From
the name ending, what functional group does it contain? a) alcohol b) amine c) ester d) ketone
21) There are 20 basic amino acids in human metabolism; nine are "essential amino acids"
because a) Those amino acids are the most commonly used of the twenty b) Those amino acids
are the rarest in nature of all twenty. c) Those amino acids cannot be synthesized and must be
caten. d) Those amino acids are raw materials for human metabolism. 22) Which is a structural
component of the DNA backbone, connecting nucleotides? a) phosphate group b) gene c)
hydrogen bond d) nitrogen-containing base 23) What forces hold the two strands of DNA
together? a) double helix b) ionic bonds c) covalent bonds l) hydrogen bonds
Solution
Ans 16 a) I
The general formula of alcohol is R-OH
Where R can be any alkyl or aryl group.
Here in this compound , the OH or the hydroxyl group is bonded to the carbon that is itself
attached to a ring. So the alcohol is shown by I.