Match List I with List II :List - I List – II A. Primary structure of protein i. Human haemoglobin B. Secondary structure of protein ii. Dispulphide bonds C. Tertiary structure of protein iii. Polypeptide chain D. Quaternary structure of protein iv. \(Alpha\ helix\ and\ \beta\ sheet\)
Choose the correct answer from the options given below :
| List - I | List – II | ||
| A. | Primary structure of protein | i. | Human haemoglobin |
| B. | Secondary structure of protein | ii. | Dispulphide bonds |
| C. | Tertiary structure of protein | iii. | Polypeptide chain |
| D. | Quaternary structure of protein | iv. | \(Alpha\ helix\ and\ \beta\ sheet\) |
- A-III, B-IV, C-II, D-I
- A-III, B-II, C-I, D-IV
- A-I, B-III, C-II, D-IV
- A-IV, B-III, C-II, D-I
The Correct Option is A
Solution and Explanation
A. Primary structure of protein: The primary structure is the linear sequence of amino acids in a polypeptide chain. A-II
B. Secondary structure of protein: The secondary structure refers to local folded structures within the polypeptide chain, stabilized by hydrogen bonds. Common secondary structures include alpha helices and beta sheets. B-IV
C. Tertiary structure of protein: The tertiary structure is the overall 3D arrangement of a polypeptide chain, stabilized by various interactions, including disulfide bonds, hydrogen bonds, hydrophobic interactions, and ionic bonds. C-II
D. Quaternary structure of protein: The quaternary structure is the arrangement of mul tiple polypeptide chains (subunits) in a protein complex. Human hemoglobin, composed of four subunits, is an example of a protein with quaternary structure. D-I
Top Questions on Biochemistry
Match the LIST I (Enzyme) with LIST II (Catabolic Products)
LIST-I LIST-II (Enzyme) (Catabolic Products) A \(\beta\)-galactosidase III Galactose + glucose B Lecithinase I Choline + H$_3$PO$_4$ + fat C Urease IV CO$_2$ + NH$_3$ D Lipase II Glycerol + fatty acids - What is the role of ATP in bioluminescence reactions?
- CUET (PG) - 2025
- Public Health
- Biochemistry
- A point mutation that changes a codon but does not alter the resulting amino acid is classified as -
- CUET (PG) - 2025
- Public Health
- Biochemistry
- All amino acids have a chiral centre, except
- Triple helical structure of protein is also called
Questions Asked in NEET exam
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
- NEET (UG) - 2025
- Pendulums
- An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature \(27^\circ\)C. The mass of the oxygen withdrawn from the cylinder is nearly equal to: [Given, \(R = \frac{100}{12} \text{ J mol}^{-1} \text{K}^{-1}\), and molecular mass of \(O_2 = 32 \text{ g/mol}\), 1 atm pressure = \(1.01 \times 10^5 \text{ N/m}^2\)]
- NEET (UG) - 2025
- Ideal-gas equation and absolute temperature
- A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of \(60^\circ\) with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (take \(g = 10\) m/s\(^2\)):
- NEET (UG) - 2025
- Common forces in mechanics
- A wire of resistance \(R\) is cut into 8 equal pieces. From these pieces, two equivalent resistances are made by adding four of these together in parallel. Then these two are added in series. The net effective resistance of the combination is:
- NEET (UG) - 2025
- Resistance
- Which of the following organisms cannot fix nitrogen? A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:- NEET (UG) - 2025
- Nitrogen Fixation