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Question for NEET PG Biochemistry - Quiz / Questions / MCQ in English

Last Update on : October 11, 2026

Duration: 60 · Questions: 50 · Max Marks: 50

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To boost your performance in NEET PG Biochemistry exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in NEET PG Biochemistry exams.

Latest NEET PG Biochemistry Exam Question (Objective Questions), MCQ in English

Subjects : Biochemistry

Question Bank NEET PG Biochemistry - English

Biochemistry

Q 1 :
Which property of water makes it an excellent solvent for polar molecules?
  1. A.High dielectric constant
  2. B.Low dielectric constant
  3. C.Low boiling point
  4. D.Non-polar nature
Q 2 :
The pH of a neutral solution at 25°C is:
  1. A.5.0
  2. B.7.0
  3. C.9.0
  4. D.14.0
Q 3 :
Which buffer system is primarily responsible for maintaining blood pH?
  1. A.Bicarbonate buffer
  2. B.Phosphate buffer
  3. C.Acetate buffer
  4. D.Tris buffer
Q 4 :
Metabolic acidosis is characterized by:
  1. A.Increased blood pH
  2. B.Decreased blood pH
  3. C.Increased bicarbonate levels
  4. D.Decreased carbon dioxide levels
Q 5 :
Respiratory alkalosis is caused by:
  1. A.Hyperventilation
  2. B.Hypoventilation
  3. C.Increased bicarbonate production
  4. D.Decreased carbon dioxide production
Q 6 :
The Henderson-Hasselbalch equation is used to calculate:
  1. A.pH of a buffer solution
  2. B.Enzyme kinetics
  3. C.Gibbs free energy
  4. D.Redox potential
Q 7 :
Which clinical condition is associated with a high anion gap metabolic acidosis?
  1. A.Diarrhea
  2. B.Renal tubular acidosis
  3. C.Hyperchloremic acidosis
  4. D.Diabetic ketoacidosis
Q 8 :
Water’s high heat capacity is due to:
  1. A.Covalent bonding
  2. B.Van der Waals forces
  3. C.Ionic bonding
  4. D.Hydrogen bonding
Q 9 :
Which of the following is a clinical application of acid-base balance?
  1. A.Management of diabetic ketoacidosis
  2. B.Treatment of hypertension
  3. C.Diagnosis of anemia
  4. D.Treatment of osteoporosis
Q 10 :
The pKa of a buffer is the pH at which:
  1. A.The buffer has equal concentrations of conjugate acid and base
  2. B.The buffer is fully deprotonated
  3. C.The buffer is fully protonated
  4. D.The buffer is ineffective
Q 11 :
Which of the following is an essential amino acid?
  1. A.Glycine
  2. B.Alanine
  3. C.Leucine
  4. D.Aspartic acid
Q 12 :
The isoelectric point (pI) of an amino acid is the pH at which:
  1. A.It is fully protonated
  2. B.It has no net charge
  3. C.It is fully deprotonated
  4. D.It forms a zwitterion
Q 13 :
Which amino acid is classified as basic?
  1. A.Lysine
  2. B.Glutamic acid
  3. C.Valine
  4. D.Phenylalanine
Q 14 :
Which amino acid contains a sulfur group in its side chain?
  1. A.Tyrosine
  2. B.Serine
  3. C.Threonine
  4. D.Methionine
Q 15 :
The zwitterion form of an amino acid is characterized by:
  1. A.A positive net charge
  2. B.A negative net charge
  3. C.No net charge
  4. D.No side chain
Q 16 :
Which amino acid is non-polar and aliphatic?
  1. A.Histidine
  2. B.Aspartic acid
  3. C.Valine
  4. D.Arginine
Q 17 :
Which amino acid is essential for infants but not for adults?
  1. A.Tryptophan
  2. B.Lysine
  3. C.Histidine
  4. D.Phenylalanine
Q 18 :
The side chain of aspartic acid is:
  1. A.Acidic
  2. B.Basic
  3. C.Neutral
  4. D.Aromatic
Q 19 :
Which amino acid is involved in the formation of disulfide bonds?
  1. A.Threonine
  2. B.Methionine
  3. C.Serine
  4. D.Cysteine
Q 20 :
The pI of an amino acid is calculated as the average of:
  1. A.pKa of the carboxyl group and pKa of the side chain
  2. B.pKa of the amino group and pKa of the side chain
  3. C.pKa values of groups that are protonated and deprotonated
  4. D.pKa of the carboxyl group and pKa of the amino group
Q 21 :
The peptide bond is formed between:
  1. A.Amino group and carboxyl group
  2. B.Amino group and side chain
  3. C.Carboxyl group and side chain
  4. D.Two side chains
Q 22 :
The primary structure of a protein refers to:
  1. A.The sequence of amino acids
  2. B.The 3D conformation
  3. C.Alpha helices and beta sheets
  4. D.Interactions between subunits
Q 23 :
Which level of protein structure is stabilized by hydrogen bonds?
  1. A.Primary
  2. B.Tertiary
  3. C.Secondary
  4. D.Quaternary
Q 24 :
Which disease is caused by protein misfolding?
  1. A.Scurvy
  2. B.Rickets
  3. C.Alzheimer’s disease
  4. D.Beriberi
Q 25 :
The quaternary structure of a protein involves:
  1. A.Folding of a single polypeptide chain
  2. B.Hydrogen bonds within a single chain
  3. C.Interactions between multiple polypeptide chains
  4. D.Disulfide bonds within a single chain
Q 26 :
Prion diseases are caused by:
  1. A.Vitamin deficiency
  2. B.Misfolded proteins
  3. C.Bacterial infection
  4. D.Genetic mutations
Q 27 :
Which bond stabilizes the tertiary structure of a protein?
  1. A.Peptide bond
  2. B.Disulfide bond
  3. C.Hydrogen bond
  4. D.Glycosidic bond
Q 28 :
The secondary structure of a protein includes:
  1. A.Amino acid sequence
  2. B.Alpha helices and beta sheets
  3. C.3D conformation
  4. D.Subunit interactions
Q 29 :
Which of the following is a protein misfolding disease?
  1. A.Cystic fibrosis
  2. B.Scurvy
  3. C.Pellagra
  4. D.Creutzfeldt-Jakob disease
Q 30 :
Protein folding is driven by:
  1. A.Covalent bonds only
  2. B.Peptide bonds
  3. C.Glycosidic bonds
  4. D.Hydrophobic interactions and other non-covalent bonds
Q 31 :
Which of the following is a monosaccharide?
  1. A.Sucrose
  2. B.Glucose
  3. C.Maltose
  4. D.Lactose
Q 32 :
The glycosidic bond in carbohydrates is formed between:
  1. A.A hydroxyl group and an anomeric carbon
  2. B.Two hydroxyl groups
  3. C.Two anomeric carbons
  4. D.A carboxyl group and a hydroxyl group
Q 33 :
Which polysaccharide is a storage form of glucose in animals?
  1. A.Starch
  2. B.Chitin
  3. C.Cellulose
  4. D.Glycogen
Q 34 :
Which of the following is a disaccharide?
  1. A.Sucrose
  2. B.Fructose
  3. C.Glucose
  4. D.Galactose
Q 35 :
The anomeric carbon in glucose is:
  1. A.The carbon adjacent to the carboxyl group
  2. B.The carbon with the highest oxidation state
  3. C.The carbon that determines D or L configuration
  4. D.The carbon involved in the glycosidic bond
Q 36 :
Cellulose differs from starch in:
  1. A.Monosaccharide composition
  2. B.Molecular weight
  3. C.Type of glycosidic bond
  4. D.Solubility in water
Q 37 :
Which carbohydrate is not digestible by humans?
  1. A.Cellulose
  2. B.Glycogen
  3. C.Starch
  4. D.Maltose
Q 38 :
The D and L forms of carbohydrates refer to:
  1. A.The configuration at the chiral carbon furthest from the carbonyl group
  2. B.The configuration at the anomeric carbon
  3. C.The number of carbon atoms
  4. D.The type of glycosidic bond
Q 39 :
Which disaccharide is composed of glucose and fructose?
  1. A.Maltose
  2. B.Lactose
  3. C.Sucrose
  4. D.Trehalose
Q 40 :
Which of the following is a saturated fatty acid?
  1. A.Palmitic acid
  2. B.Oleic acid
  3. C.Linoleic acid
  4. D.Arachidonic acid
Q 41 :
Phospholipids are major components of:
  1. A.Cell membranes
  2. B.Energy storage
  3. C.Hormones
  4. D.Enzymes
Q 42 :
Cholesterol is a precursor for:
  1. A.Prostaglandins
  2. B.Steroid hormones
  3. C.Triglycerides
  4. D.Phospholipids
Q 43 :
Which lipid is involved in inflammatory responses?
  1. A.Triglycerides
  2. B.Cholesterol
  3. C.Sphingolipids
  4. D.Prostaglandins
Q 44 :
The structure of a triglyceride consists of:
  1. A.Glucose and two fatty acids
  2. B.Glycerol and two fatty acids
  3. C.Glucose and three fatty acids
  4. D.Glycerol and three fatty acids
Q 45 :
Which fatty acid is essential and cannot be synthesized by humans?
  1. A.Linoleic acid
  2. B.Stearic acid
  3. C.Palmitic acid
  4. D.Oleic acid
Q 46 :
Sphingolipids are important components of:
  1. A.Cell membranes
  2. B.Energy storage
  3. C.Hormones
  4. D.Enzymes
Q 47 :
Which lipid derivative is involved in immune responses?
  1. A.Leukotrienes
  2. B.Triglycerides
  3. C.Cholesterol
  4. D.Phospholipids
Q 48 :
Unsaturated fatty acids have:
  1. A.Only single bonds
  2. B.One or more double bonds
  3. C.No double bonds
  4. D.A branched structure
Q 49 :
Cholesterol is primarily synthesized in which organ?
  1. A.Kidney
  2. B.Spleen
  3. C.Pancreas
  4. D.Liver
Q 50 :
Which of the following is a purine base?
  1. A.Adenine
  2. B.Cytosine
  3. C.Thymine
  4. D.Uracil

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