Which of the following is not a carbohydrate:
Correct answer: D. Lactic acid (C3H6O3)
- A. Glucose (C6H12O5)
- B. Sucrose (C2H2O)
- C. Rhamnose (C6H12O5)n
- D. Lactic acid (C3H6O3)
Explanation
Lactic acid is an organic molecule. Its chemical formula is C3H6O3 Lactic acid has the same proportion of carbon, hydrogen and oxygen as carbohydrates but it is technically not a carbohydrate.
This question appeared on the NUMS 2022 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Carbohydrates
Carbohydrates are organic compounds classified as monosaccharides, disaccharides and polysaccharides according to their structure and hydrolysis products. The topic covers glycosidic bonds, glucose and fructose, sucrose, lactose and maltose, starch, glycogen and cellulose, along with their roles in energy storage, structural support and food tests.
Practise Biological Molecules
1,790 free Biological Molecules MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.