Biomolecules: JEE Mains Previous Year Questions (2021-2024) | Chemistry for JEE Main & Advanced PDF Download

 Page 1


 
 
 
2024 
 
Q1 - 2024 (01 Feb Shift 1) 
If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in 
complementary strand is: 
(1) CATTAGCT 
(2) TACGAAGT 
(3) GTACTTAC 
(4) ATGCGACT 
 
Q2 - 2024 (01 Feb Shift 2) 
The number of tripeptides formed by three different amino acids using each amino acid 
once is _____. 
 
Q3 - 2024 (27 Jan Shift 1) 
Two nucleotides are joined together by a linkage known as : 
(1) Phosphodiester linkage 
(2) Glycosidic linkage 
(3) Disulphide linkage 
(4) Peptide linkage 
 
Q4 - 2024 (27 Jan Shift 2) 
Which structure of protein remains intact after coagulation of egg white on boiling? 
(1) Primary 
(2) Tertiary 
(3) Secondary 
(4) Quaternary 
 
Q5 - 2024 (29 Jan Shift 1) 
Page 2


 
 
 
2024 
 
Q1 - 2024 (01 Feb Shift 1) 
If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in 
complementary strand is: 
(1) CATTAGCT 
(2) TACGAAGT 
(3) GTACTTAC 
(4) ATGCGACT 
 
Q2 - 2024 (01 Feb Shift 2) 
The number of tripeptides formed by three different amino acids using each amino acid 
once is _____. 
 
Q3 - 2024 (27 Jan Shift 1) 
Two nucleotides are joined together by a linkage known as : 
(1) Phosphodiester linkage 
(2) Glycosidic linkage 
(3) Disulphide linkage 
(4) Peptide linkage 
 
Q4 - 2024 (27 Jan Shift 2) 
Which structure of protein remains intact after coagulation of egg white on boiling? 
(1) Primary 
(2) Tertiary 
(3) Secondary 
(4) Quaternary 
 
Q5 - 2024 (29 Jan Shift 1) 
 
Choose the correct answer from the options given below: 
(1) A-II, B-IV, C-I, D-III 
(2) A-II, B-III, C-IV, D-I 
(3) A-III, B-II, C-IV, D-I 
(4) A-IV, B-III, C-I, D-II 
 
Q6 - 2024 (29 Jan Shift 1) 
Type of amino acids obtained by hydrolysis of proteins is : 
(1) ?? 
(2) ?? 
(3) ?? 
(4) ?? 
 
Q7 - 2024 (29 Jan Shift 1) 
Number of compounds among the following which contain sulphur as heteroatom is  
_____ 
Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine 
 
Q8 - 2024 (29 Jan Shift 2) 
Match List I with List II 
List I (Bio Polymer) List II (Monomer) 
A. Starch I. nucleotide 
B. Cellulose II. ?? -glucose athong 
C. Nucleic acid III. ?? -glucose 
Page 3


 
 
 
2024 
 
Q1 - 2024 (01 Feb Shift 1) 
If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in 
complementary strand is: 
(1) CATTAGCT 
(2) TACGAAGT 
(3) GTACTTAC 
(4) ATGCGACT 
 
Q2 - 2024 (01 Feb Shift 2) 
The number of tripeptides formed by three different amino acids using each amino acid 
once is _____. 
 
Q3 - 2024 (27 Jan Shift 1) 
Two nucleotides are joined together by a linkage known as : 
(1) Phosphodiester linkage 
(2) Glycosidic linkage 
(3) Disulphide linkage 
(4) Peptide linkage 
 
Q4 - 2024 (27 Jan Shift 2) 
Which structure of protein remains intact after coagulation of egg white on boiling? 
(1) Primary 
(2) Tertiary 
(3) Secondary 
(4) Quaternary 
 
Q5 - 2024 (29 Jan Shift 1) 
 
Choose the correct answer from the options given below: 
(1) A-II, B-IV, C-I, D-III 
(2) A-II, B-III, C-IV, D-I 
(3) A-III, B-II, C-IV, D-I 
(4) A-IV, B-III, C-I, D-II 
 
Q6 - 2024 (29 Jan Shift 1) 
Type of amino acids obtained by hydrolysis of proteins is : 
(1) ?? 
(2) ?? 
(3) ?? 
(4) ?? 
 
Q7 - 2024 (29 Jan Shift 1) 
Number of compounds among the following which contain sulphur as heteroatom is  
_____ 
Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine 
 
Q8 - 2024 (29 Jan Shift 2) 
Match List I with List II 
List I (Bio Polymer) List II (Monomer) 
A. Starch I. nucleotide 
B. Cellulose II. ?? -glucose athong 
C. Nucleic acid III. ?? -glucose 
D. Protein IV. ?? -amino acid 
 
Choose the correct answer from the options given below :- 
(1) A-II, B-I, C-III, D-IV 
(2) A-IV, B-II, C-I, D-III 
(3) A-I, B-III, C-IV, D-II 
(4) A-II, B-III, C-I, D-IV 
 
Q9 - 2024 (30 Jan Shift 1) 
Sugar which does not give reddish brown precipitate with Fehling's reagent is: 
(1) Sucrose 
(2) Lactose 
(3) Glucose 
(4) Maltose 
 
Q10 - 2024 (30 Jan Shift 2) 
The total number of correct statements, regarding the nucleic acids is 
A. RNA is regarded as the reserve of genetic information. 
B. DNA molecule self-duplicates during cell division 
C. DNA synthesizes proteins in the cell. 
D. The message for the synthesis of particular proteins is present in DNA 
E. Identical DNA strands are transferred to daughter cells. 
 
Q11 - 2024 (31 Jan Shift 1) 
Match List I with List II 
 List - I  List - II 
A. Glucose /NaHCO
3
/ ? I. Gluconic acid 
B. Glucose /HNO
3
 II. No reaction 
C. Glucose /HI/ ? III. n-hexane 
D. Glucose / Bromine water IV. Saccharic acid 
Choose the correct answer from the options given below: 
(1) A-IV, B-I, C-III, D-II 
Page 4


 
 
 
2024 
 
Q1 - 2024 (01 Feb Shift 1) 
If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in 
complementary strand is: 
(1) CATTAGCT 
(2) TACGAAGT 
(3) GTACTTAC 
(4) ATGCGACT 
 
Q2 - 2024 (01 Feb Shift 2) 
The number of tripeptides formed by three different amino acids using each amino acid 
once is _____. 
 
Q3 - 2024 (27 Jan Shift 1) 
Two nucleotides are joined together by a linkage known as : 
(1) Phosphodiester linkage 
(2) Glycosidic linkage 
(3) Disulphide linkage 
(4) Peptide linkage 
 
Q4 - 2024 (27 Jan Shift 2) 
Which structure of protein remains intact after coagulation of egg white on boiling? 
(1) Primary 
(2) Tertiary 
(3) Secondary 
(4) Quaternary 
 
Q5 - 2024 (29 Jan Shift 1) 
 
Choose the correct answer from the options given below: 
(1) A-II, B-IV, C-I, D-III 
(2) A-II, B-III, C-IV, D-I 
(3) A-III, B-II, C-IV, D-I 
(4) A-IV, B-III, C-I, D-II 
 
Q6 - 2024 (29 Jan Shift 1) 
Type of amino acids obtained by hydrolysis of proteins is : 
(1) ?? 
(2) ?? 
(3) ?? 
(4) ?? 
 
Q7 - 2024 (29 Jan Shift 1) 
Number of compounds among the following which contain sulphur as heteroatom is  
_____ 
Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine 
 
Q8 - 2024 (29 Jan Shift 2) 
Match List I with List II 
List I (Bio Polymer) List II (Monomer) 
A. Starch I. nucleotide 
B. Cellulose II. ?? -glucose athong 
C. Nucleic acid III. ?? -glucose 
D. Protein IV. ?? -amino acid 
 
Choose the correct answer from the options given below :- 
(1) A-II, B-I, C-III, D-IV 
(2) A-IV, B-II, C-I, D-III 
(3) A-I, B-III, C-IV, D-II 
(4) A-II, B-III, C-I, D-IV 
 
Q9 - 2024 (30 Jan Shift 1) 
Sugar which does not give reddish brown precipitate with Fehling's reagent is: 
(1) Sucrose 
(2) Lactose 
(3) Glucose 
(4) Maltose 
 
Q10 - 2024 (30 Jan Shift 2) 
The total number of correct statements, regarding the nucleic acids is 
A. RNA is regarded as the reserve of genetic information. 
B. DNA molecule self-duplicates during cell division 
C. DNA synthesizes proteins in the cell. 
D. The message for the synthesis of particular proteins is present in DNA 
E. Identical DNA strands are transferred to daughter cells. 
 
Q11 - 2024 (31 Jan Shift 1) 
Match List I with List II 
 List - I  List - II 
A. Glucose /NaHCO
3
/ ? I. Gluconic acid 
B. Glucose /HNO
3
 II. No reaction 
C. Glucose /HI/ ? III. n-hexane 
D. Glucose / Bromine water IV. Saccharic acid 
Choose the correct answer from the options given below: 
(1) A-IV, B-I, C-III, D-II 
(2) A-II, B-IV, C-III, D-I 
(3) A-III, B-II, C-I, D-IV 
(4) A-I, B-IV, C-III, D-II 
 
Q12 - 2024 (31 Jan Shift 2) 
A compound ( x) with molar mass 108gmol
-1
 undergoes acetylation to give product with 
molar mass 192gmol
-1
. The number of amino groups in the compound (x) is  ______ 
 
Q13 - 2024 (31 Jan Shift 2) 
From the vitamins A,BB
1
,B
6
,B
12
,C,D,E and K, the number vitamins that can be stored in 
our body is  _____ 
 
Answer Key 
 
Q1 (2)  
 
Q2 (6)  
 
Q3 (1)  
 
Q4 (1)  
 
Q5 (4)  
 
Q6 (2)  
 
Q7 (2)  
 
Q8 (4)  
 
Q9 (1)  
 
Q10 (3)  
 
Q11 (2)  
 
Q12 (2)  
 
Q13 (5) 
Page 5


 
 
 
2024 
 
Q1 - 2024 (01 Feb Shift 1) 
If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in 
complementary strand is: 
(1) CATTAGCT 
(2) TACGAAGT 
(3) GTACTTAC 
(4) ATGCGACT 
 
Q2 - 2024 (01 Feb Shift 2) 
The number of tripeptides formed by three different amino acids using each amino acid 
once is _____. 
 
Q3 - 2024 (27 Jan Shift 1) 
Two nucleotides are joined together by a linkage known as : 
(1) Phosphodiester linkage 
(2) Glycosidic linkage 
(3) Disulphide linkage 
(4) Peptide linkage 
 
Q4 - 2024 (27 Jan Shift 2) 
Which structure of protein remains intact after coagulation of egg white on boiling? 
(1) Primary 
(2) Tertiary 
(3) Secondary 
(4) Quaternary 
 
Q5 - 2024 (29 Jan Shift 1) 
 
Choose the correct answer from the options given below: 
(1) A-II, B-IV, C-I, D-III 
(2) A-II, B-III, C-IV, D-I 
(3) A-III, B-II, C-IV, D-I 
(4) A-IV, B-III, C-I, D-II 
 
Q6 - 2024 (29 Jan Shift 1) 
Type of amino acids obtained by hydrolysis of proteins is : 
(1) ?? 
(2) ?? 
(3) ?? 
(4) ?? 
 
Q7 - 2024 (29 Jan Shift 1) 
Number of compounds among the following which contain sulphur as heteroatom is  
_____ 
Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine 
 
Q8 - 2024 (29 Jan Shift 2) 
Match List I with List II 
List I (Bio Polymer) List II (Monomer) 
A. Starch I. nucleotide 
B. Cellulose II. ?? -glucose athong 
C. Nucleic acid III. ?? -glucose 
D. Protein IV. ?? -amino acid 
 
Choose the correct answer from the options given below :- 
(1) A-II, B-I, C-III, D-IV 
(2) A-IV, B-II, C-I, D-III 
(3) A-I, B-III, C-IV, D-II 
(4) A-II, B-III, C-I, D-IV 
 
Q9 - 2024 (30 Jan Shift 1) 
Sugar which does not give reddish brown precipitate with Fehling's reagent is: 
(1) Sucrose 
(2) Lactose 
(3) Glucose 
(4) Maltose 
 
Q10 - 2024 (30 Jan Shift 2) 
The total number of correct statements, regarding the nucleic acids is 
A. RNA is regarded as the reserve of genetic information. 
B. DNA molecule self-duplicates during cell division 
C. DNA synthesizes proteins in the cell. 
D. The message for the synthesis of particular proteins is present in DNA 
E. Identical DNA strands are transferred to daughter cells. 
 
Q11 - 2024 (31 Jan Shift 1) 
Match List I with List II 
 List - I  List - II 
A. Glucose /NaHCO
3
/ ? I. Gluconic acid 
B. Glucose /HNO
3
 II. No reaction 
C. Glucose /HI/ ? III. n-hexane 
D. Glucose / Bromine water IV. Saccharic acid 
Choose the correct answer from the options given below: 
(1) A-IV, B-I, C-III, D-II 
(2) A-II, B-IV, C-III, D-I 
(3) A-III, B-II, C-I, D-IV 
(4) A-I, B-IV, C-III, D-II 
 
Q12 - 2024 (31 Jan Shift 2) 
A compound ( x) with molar mass 108gmol
-1
 undergoes acetylation to give product with 
molar mass 192gmol
-1
. The number of amino groups in the compound (x) is  ______ 
 
Q13 - 2024 (31 Jan Shift 2) 
From the vitamins A,BB
1
,B
6
,B
12
,C,D,E and K, the number vitamins that can be stored in 
our body is  _____ 
 
Answer Key 
 
Q1 (2)  
 
Q2 (6)  
 
Q3 (1)  
 
Q4 (1)  
 
Q5 (4)  
 
Q6 (2)  
 
Q7 (2)  
 
Q8 (4)  
 
Q9 (1)  
 
Q10 (3)  
 
Q11 (2)  
 
Q12 (2)  
 
Q13 (5) 
 
Solutions 
 
Q1 
Adenine base pairs with thymine with 2 hydrogen bonds and cytosine base pairs with 
guanine with 3 hydrogen bonds. 
 
 
Q2 
Let 3 different amino acid are A, B, C then following combination of tripeptides can be 
formedABC,ACB,BAC,BCA,CAB,CBA 
 
Q3 
Phosphodiester linkage 
 
 
Q4