NTA will shortly release the JEE Main Syllabus 2025 at jeemain.nta.ac.in. Last Year, the complete syllabus of JEE Main underwent some major changes. According to the latest syllabus guidelines, the weightage of Physics has dropped to 22.5%. Due to these changes in the syllabus, certain shifts in chapter-wise weightage have been observed. Biomolecules are among such topics. It’s among the least weightage topics in JEE Main Physics Syllabus 2025. This chapter holds 1.39% weightage in the whole syllabus.
- Biomolecules is a part of the General Physics section, and every year around 2-3 questions are asked from this chapter. Due to the drop in weightage, you can expect 1-2 questions in JEE Main 2025.
- Biomolecules in JEE Mains Physics Syllabus 2025 covers all the basic concepts on units and measurements, fundamentals of units, dimensions etc.
Aspirants consider Biomolecules as one of the Easiest Chapters in Physics for JEE Main 2025. Even though this chapter has the least weightage in the syllabus, to develop a strong foundation in physics, this particular chapter plays a pivotal role. Hence the candidates need to develop a clear understanding of this chapter. The list of most asked questions from this chapter will help the students with their preparation.
Must Check News on JEE Main Physics:
Here are some important topics and questions about biomolecules for JEE Main:
- Structure and properties
Learn about the structure and properties of carbohydrates, proteins, lipids, and nucleic acids.
- Amino acids
Understand the classification and properties of amino acids to understand protein structure and function.
- Enzymes
Learn about the specificity, catalysis, and regulation of enzymes to understand biochemical reactions.
- Hydrogen bonds
Learn how glucose and sucrose are soluble in water because they have -OH groups that form hydrogen bonds with water molecules.
- Protein denaturation
Learn how globular proteins in egg white coagulate and denature into a rubbery mass when an egg is cooked.
Biomolecules JEE Mains Questions -
List Of Most Asked Questions With Solutions
In the (JEE) Main, the topic of Physics and Measurement often features questions that have appeared multiple times in previous years. Many questions in this section are either repeated or follow similar patterns, with only minor changes, such as different numerical values or slight modifications in wording.Certain questions have been repeated as many as five times.
Here are some of the most frequently asked and repeated questions:
Question 1:
Which of the following is a structural polysaccharide? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Starch
B) Glycogen
C) Cellulose
D) Sucrose
Solution:
Cellulose is a structural polysaccharide found in the cell walls of plants. Correct answer is C.
Year: 2023
Question 2:
Which of the following amino acids is essential for humans? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Glycine
B) Alanine
C) Leucine
D) Serine
Solution:
Leucine is an essential amino acid that must be obtained from the diet. Correct answer is C.
Year: 2022
Question 3:
Which vitamin is important for blood clotting? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Vitamin A
B) Vitamin K
C) Vitamin C
D) Vitamin E
Solution:
Vitamin K is essential for the synthesis of proteins required for blood clotting. Correct answer is B.
Year: 2021
Question 4:
What type of bond forms between amino acids in a protein? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Ionic bond
B) Hydrogen bond
C) Peptide bond
D) Disulfide bond
Solution:
A peptide bond forms between amino acids, linking them together in a protein chain. Correct answer is C.
Year: 2020
Question 5:
Which of the following is a function of lipids? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Energy storage
B) Insulation
C) Hormone production
D) All of the above
Solution:
Lipids are involved in energy storage, insulation, and hormone production. Therefore, the correct answer is D.
Year: 2019
Question 6:
Which carbohydrate is commonly known as table sugar? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Glucose
B) Fructose
C) Sucrose
D) Lactose
Solution:
Sucrose is commonly known as table sugar, consisting of glucose and fructose. Correct answer is C.
Year: 2018
Question 7:
What is the primary function of hemoglobin in the body? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Transport of oxygen
B) Immune response
C) Blood clotting
D) Energy storage
Solution:
Hemoglobin primarily functions to transport oxygen from the lungs to the tissues. Correct answer is A.
Year: 2017
Question 8:
Which of the following is a nucleic acid? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) DNA
B) RNA
C) Both A and B
D) Protein
Solution:
Both DNA and RNA are nucleic acids. Therefore, the correct answer is C.
Year: 2016
Question 9:
What is the main function of enzymes? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Provide energy
B) Speed up chemical reactions
C) Store genetic information
D) Fight infections
Solution:
Enzymes function to speed up chemical reactions in the body. Correct answer is B.
Year: 2015
Question 10:
Which of the following is a saturated fatty acid? This question has been asked thrice- JEE Main 2016, JEE Main 2021, JEE Main 2023
Options:
A) Oleic acid
B) Stearic acid
C) Linoleic acid
D) Arachidonic acid
Solution:
Stearic acid is a saturated fatty acid with no double bonds between carbon atoms. Correct answer is B.
Year: 2014
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