Question

Which of the following is true regarding monosaccharides?

• A. Always have six carbon atoms
• B. Always have five carbon atoms
• C. Always have four carbon atoms
• D. May contain 3 to 7 carbon atoms

Answer 1

The correct option is D May contain 3 to 7 carbon atoms

Monosaccharides may contain 3 to 7 carbon atoms. They have chemical formula $(C{H}_{2}O{)}_n$, where conventionally $n=3$. Monosaccharides can be classified by the number of carbon atoms they contain: diose(2), triose(3), tetrose(4), pentose(5), hexose(6), heptose(7) and so on.