Question

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question 1
a. h2n - c - c - oh
r
b. ch2oh ch2oh
o ho
oh
oh
c. ho
n nh2
n n
n
d. h h h h h h h h

• c - c - c - c - c - c - c - c -

h h h h h h h h
which of the above structures represent a carbohydrate?
a a
b b
c c
d d

Explanation:

Carbohydrates have C, H, O with H:O ≈ 2:1, and hydroxyl groups. Option B shows a ring with -OH and CH₂OH groups, typical of monosaccharides (carbohydrates). A is amino acid, C is nucleotide base-sugar (nucleic acid component), D is hydrocarbon chain.

Answer:

B. Option B