Biomolecules — practice questions
94 curated practice questions from Biomolecules (Chemistry JEE Main, NTA Exams) — 7 hard, 48 medium, 39 easy. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Which reagent(s) can be used to make a distinction between an aldose and a ketose? Br 2 water, Tollen's reagent and…
- Sugar moiety in DNA and RNA molecules respectively are (JEE Main 2022)
- Match List I and List II List I List II Test Functional group/Class of Compound (A) Molisch's Test (I) Peptide (B)…
- The hormone which controls the processes like burning of fats, proteins and carbohydrates to liberate energy in the…
- Match List I with List II List I (Natural amino acid) List II (One letter code) A. Glutamic acid I. Q B. Glutamine II…
- L-isomer of tetrose X ( C _ 4 H _ 3 O _ 4 ) gives positive Schiff's test and has two chiral carbons. On acetylation…
- The one that does not stabilize 2^ a and 3^ structures of proteins is (Jee Main 2023)
- Rapid interconversion of α-D- glucose and β-D- glucose in solution is known as
- Which one of the following is a water soluble vitamin, that is not excreted easily? (JEE Main 2022)
- Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A…
- D-Glucose exists in x different forms. The value of x (stereoisomer) is
- How many amino acids (approx) are involved during the synthesis of protein?
- In polysaccharides, the linkage connecting monosaccharides is called
- Two nucleotides are joined together by a linkage known as: (Jee Main 2024)
- DNA molecule takes the shape of…I…helix which are made up of alternate units of …II…and…III….
- The number of amino acids found in proteins that a human body can synthesize is
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: In DNA…
- Consider the double helix structure of DNA. the base pairs are
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: Sucrose is…
- Lack of essential amino acids in the diet leads to the disease called
- The correct representation in six membered pyranose form for the following sugar [X] is (Jee Main 2023)
- Which of the following represents the anomer of the compound shown ?
- Glycosidic linkage between C 1 of a -glucose and C 2 of -fructose is found in (JEE Main 2022)
- Number of stereo centers present in linear and cyclic structures of glucose are respectively:
- All monosaccharides containing five or six carbon atoms have
- Sugar which does not give reddish brown precipitate with Fehling's reagent is: (Jee Main 2024)
- Which one of the following chemical units is certainly to be found in enzyme ?
- Match List-I with List-II. List-I (Bio polymer) List-II (Monomer) A. Starch I. Nucleotide B. Cellulose II. α-glucose C…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: -pleated…
- Which of the following α-amino acids does not contain a chiral carbon ?
- A protein ‘X’ with molecular weight of 70,000 u, on hydrolysis gives amino acids. One of these amino acid is (Jee Main…
- 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…
- The bond that determines the secondary structure of a protein is
- When pieces of human hair are heated strongly with soda- lime, smell of ammonia can be detected. Which one of the…
- A certain compound gives negative test with ninhydrin and positive test with Benedict’s solution. The compound is
- Match List I with List II List I Vitamin List II Deficiency disease A. Vitamin A I. Beri – Beri B. Thiamine II…
- For the complex conversion of D-glucose into the corresponding osazone, the minimum number of equivalents of phenyl…
- The naturally occurring amino acid that contains only one basic functional group in its chemical structure is (Jee Main…
- In Carius tube, an organic compound ‘X’ is treated with sodium peroxide to form a mineral acid ‘Y’. The solution of…
- Coagulation of egg, on heating is because of: (Jee Main 2024)
- In nucleic acids, the nucleotides are linked to one another through
- Stability of a -Helix structure of proteins depends upon (JEE Main 2022)
- During the denaturation of proteins, which of these structures will remain intact? (JEE Main 2022)
- Match List-I with List-II List-I List-II (A) Glucose + HI (I) Gluconic acid (B) Glucose + Br 2 water (II) Glucose…
- Select the biomolecule(s) that help during the formation of the living system.
- In an amino acid, the carboxyl group ionises at pKa 1 = 2.34 and ammonium ion at pKa 2 = 9.60. The isoelectric point of…
- DNA molecule contains 4 bases whose structure are shown below. One of the structures is not correct, identify the…
- Following tetrapeptide can be represented as (F, L, D, Y, I, Q, P are one letter codes for amino acids) (Jee Main 2023)
- Acid or enzymatic hydrolysis of sucrose to give an equimolar mixture of glucose and fructose is called
- Match List I with List II Choose the correct answer from the options given below: (JEE Main 2022) List I List II A)…
- When sugar 'X' is boiled with dilute H 2 SO 4 in alcoholic solution, two isomers 'A' and 'B' are formed. 'A' on…
- Match List-I with List-II. List-I List-II A. α-Glucose and α-Galactose I. Functional isomers B. α-Glucose and β-Glucose…
- Which of following amino acid has lowest iso-electric point?
- A polysaccharide ‘X’ on boiling with dil H 2 SO 4 at 393 K under 2 – 3 atm pressure yields ‘Y’. ‘Y’ on treatment with…
- The relation of the isoelectric point for an amino acid, to solubility is
- If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is: (Jee Main 2024)
- Match List I with List II List I (Natural Amino acid) List II (One Letter Code) (A) Arginine (I) D (B) Aspartic acid…
- The reagent which forms crystalline osazone derivative when treated with glucose is
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion…
- Which of the following sets of bases is present both in DNA and RNA ?
- The incorrect statements regarding enzymes are: array l array (A) Enzymes are biocatalysts. (B) Enzymes are…
- The incorrect statement regarding the given structure is (Jee Main 2024)
- Which statement correctly completes the statement ? Except for glycine, which is achiral, all the amino acids present…
- The enzyme which catalyse the oxidation of one substrate with simultaneous reduction of another substrate are called…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: Enzymes…
- Match List I with List II List I Enzymatic Reaction List II Enzyme A. Sucrose → Glucose and Fructose I. Zymase B…
- α-D- Glucose and β-D- glucose differ from each other due to difference in one carbon with respect to its ?
- Match List-I with List-II. List-I (Substances) List-II (Element present) A. Ziegler catalyst I. Rhodium B. Blood…
- Which structure of protein remains intact after coagulation of egg white on boiling? (Jee Main 2024)
- Which of the following is the correct structure of L-Glucose? (Jee Main 2024)
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion…
- Type of amino acids obtained by hydrolysis of proteins is: (Jee Main 2024)
- What per cent of II -anomer of D-glucose present in an equilibrium mixture with a specific rotation is 52.6°? Given [ u…
- If one strand of DNA has the sequence ATGCTTGA, the sequence in the complimentary strand would be
- If the sequence of bases in DNA is TGAACCCTT then the sequence of bases in m-RNA is
- Assume that a particular amino acid has an isoelectric point of 6.0. In a solution at pH 1.0, which of the following…
- When amylase catalyse the hydrolysis of starch, the final product obtained is chiefly
- Number of cyclic tripeptides formed with 2 amino acids A and B is: (Jee Main 2023)
- Sulphur (S) containing amino acids from the following are: (a ) isoleucine (b ) cysteine (c ) lysine (d ) methionine (e…
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion…
- Which of the following gives a positive test with ninhydrin? (Jee Main 2024)
- The structure of protein that is unaffected by heating is (JEE Main 2022)
- D-Glucose [ ] HNO _ 3 (A), Product (A) is
- Which of the following artificial sweeteners has the highest sweetness value in comparison to cane sugar? (Jee Main…
- Enzymes are needed only in ……quantity for the progress of reaction. Select the appropriate word to fill the blank.
- D-mannose exists entirely in pyranose form. The specific rotation for the - anomer is 29° and that of - anomer is -17°…
- The sequence in which the α-amino acids are linked to one another in a protein molecule is called its
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: A solution…
- Which of the following statements is not true about sucrose?
- The incorrect statement about Glucose is: (Jee Main 2024)
- Compound A, C _ 5 H _ 10 O _ 5 , given a tetraacetate with A c_ 2 O and oxidation of A with Br _ 2 - H _ 2 O gives an…
- Which of the following is reducing sugar? (JEE Main 2022)
- Given below are two statements. Statement I: Maltose has two α-D-glucose units linked at C 1 and C 4 and is a reducing…
- The number of tripeptides formed by three different amino acids are