MCQ on Carbohydrate Basics

Pranav Kumar Prabhakar February 16, 2026

Question 1: The general formula of carbohydrates is:

A) CnH2nOn

B) CnH2n+2On

C) CnH2n-2On

D) CnH2nO2

Explanation: Most carbohydrates follow the empirical formula (CH2O)n, meaning the ratio of hydrogen to oxygen is 2:1, similar to water. Hence, CnH2nOn.

Question 2: Which of the following is an aldose sugar?

A) Fructose

B) Sucrose

C) Starch

D) Glucose

Explanation: Glucose contains an aldehyde group in its open-chain form, making it an aldose. Fructose and ribulose are ketoses.

Question 3: The sweetest naturally occurring sugar is:

A) Glucose

B) Fructose

C) Maltose

D) Lactose

Explanation: Fructose has the highest sweetness index among natural sugars due to its structural conformation interacting strongly with taste receptors.

Question 4: Glycosidic bonds are formed between:

A) two monosachharides

B) two amino acids

C) two nucleotides

D) two fatty acids

Explanation: A glycosidic bond forms via condensation between hydroxyl groups of two monosaccharides.

Question 5: Lactose is composed of:

A) Glucose + Glucose

B) Glucose + Fructose

C) Glucose + Galactose

D) Fructose + Fructose

Explanation: Lactose consists of glucose and galactose linked by a β-1,4-glycosidic bond.

Question 6: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 7: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 8: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 9: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 10: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 11: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 12: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 13: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 14: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 15: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 16: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 17: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 18: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 19: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 20: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 21: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 22: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 23: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 24: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 25: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 26: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 27: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 28: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 29: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

Question 30: The storage carbohydrate in plants is:

A) Glycogen

B) Maltose

C) Starch

D) Chitin

Explanation: Plants store glucose in the form of starch (amylose + amylopectin), whereas animal store in the form of glycogen

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Correct Answers: 0

Wrong Answers: 0

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Posted by Pranav Kumar Prabhakar

Dr. Pranav Kumar Prabhakar is currently working as a Professor in the Department of Biotechnology at Nagaland University, Kohima, Nagaland, India. He has been listed among the World’s Top 2% Scientists (as published by Stanford University, USA, in 2021, 2022, 2023, and 2024). He earned his PhD in Biotechnology from IIT Madras. His primary research interests include elucidating molecular mechanisms and strategies for oral insulin delivery and mimicking signaling pathways in metabolic disorders (diabetes) using natural products.

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Dr. Pranav Kumar Prabhakar is currently working as a Professor in the Department of Biotechnology at Nagaland University, Kohima, Nagaland, India. He has been listed among the World’s Top 2% Scientists (as published by Stanford University, USA, in 2021, 2022, 2023, and 2024). He earned his PhD in Biotechnology from IIT Madras. His primary research interests include elucidating molecular mechanisms and strategies for oral insulin delivery and mimicking signaling pathways in metabolic disorders (diabetes) using natural products. He is a member of the Royal Society of Chemistry and the Asia-Pacific Chemical, Biological & Environmental Engineering Society. He also serves as an editorial board member and reviewer for several reputed national and international journals. Dr. Pranav has received various honors, including a travel grant to attend ATTD 2009 in Greece, sponsored by the Indian Institute of Technology Madras and the Council for Scientific and Industrial Research (CSIR), and approved by the Department of Science and Technology (DST). He has published over 115 research articles in journals, authored or edited 17 books, contributed more than 40 book chapters, and delivered 9 oral and poster presentations at scientific meetings.