Which one of the following biomolecules is a polymer/polysaccharide?
Correct answer: D. Glycogen
- A. Sucrose
- B. Pentose
- C. Lactose
- D. Glycogen
Explanation
Glycogen is a highly branched polymer of thousands of glucose units, stored in liver and muscle as the animal energy reserve. Sucrose and lactose are disaccharides of just two units and pentose is a single five carbon sugar, so none of them is a polymer. The test is whether the molecule can be hydrolysed into many repeating units.
This question appeared on the UHS MDCAT 2025 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? support@testustad.com
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.
More Carbohydrates questions
An oligosaccharide is made up of at least:
DNA and RNA differ in all EXCEPT
Which of the following has the highest energy content per gram?
Which is an organic compound found in most cells ?
___________ are needed as a source of energy for the vital activities of the body?
Molish test is used for ___________?