alleryStart learning →How many carbons does a monosaccharide usually contain?
ATwo to four
BThree to seven
CSix to twelve
DFive to nine
Answer & Solution
Correct answer: B. Three to seven
1. Simple sugars are small molecules with a short carbon backbone.
2. The usual range runs from three carbons up to seven.
3. That range covers the trioses with three carbons, the pentoses with five and the hexoses with six.
4. A range starting at six would exclude ribose, a five carbon sugar, so it is too narrow.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 3 "Biological Macromolecules", section 3.2 Carbohydrates_
Keep practising Biological Macromolecules
Browse all Biological Macromolecules questions for CSIR NET, or explore more Biology topics.
Related questions
Even though RNA is single stranded, what shape does most RNA still take?Which RNA is the smallest, and what does it do?What is the role of transfer RNA in protein synthesis?If a DNA strand reads AATTGCGC, what is the sequence of the complementary RNA?Which are the four major types of RNA?How is RNA built compared with DNA?If one DNA strand reads AATTGGCC, what does its complementary strand read?What distance separates one base pair from the next in the DNA double helix?