Past Papers Biochemistry

By Prof. Fazal Rehman Shamil

Guess Paper 1: Biochemistry Fall – 2020 Past Papers

University Name – Confidential

NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

Q.1 (A): Fill in the Blanks: (07)

a. In animals, carbohydrates are store in liver and muscle in the form of _____________.
b. 1 gm of Lipids produces _________K.cal of energy.
c. The bond between two amino acid is_____________bond.
d. Organic acid that has acidic group at one end and methyl group at other end is called_______________
e. ________________is the building blocks of protein.
f. When two to ten monosaccharide units it form _____________
g. Pentose containing __________ carbon atom.
(B): Select as TRUE / FALSE. (07)

a. Enzymes activity show best result at 25Co.
b. Glycoprotein is the combination of Lipids and protein.
c. Peptide bond is present between two monosaccharides.
d. Most enzymes are protein in nature.
e. Easter of fatty acid with alcohol is called wax.
f. The main sites for the storage of carbohydrates are liver and muscle.
g. Amino acids contain only carbon, hydrogen and oxygen.

Q.2: Define Carbohydrates. Discuss oligosaccharide and polysaccharide in detail.

Q.3: Discuss enzymes. Explain the functions of enzymes in detail.

Q.4: What is meant by Lipids? Discuss fatty acid and their types.

Q.5: Discuss amino acid, peptides and protein in detail.

Q.6: What is Nucleic acid? Discuss the structure and function of DNA and RNA in detail.

Q.7: Explain the mechanism of action of enzymes. What is the effect of PH on enzyme activity?

Q.8: Write short note on any two of the following.
a) Classification of enzymes.
b) Phospholipids
c) Glycosphingolipids.

Guess Paper 2: Biochemistry Spring – 2020 Past Papers

University Name – Confidential

NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

Q.1: Fill in the blanks: (14)
i. General formula of carbohydrates is_______________________.
ii. Glucose + Glucose = ____________________________.
iii. Reduction of monosaccharide’s produces______________________.
iv. 1gm of fats produces_______________________k.cal of energy.
v. Palmitic acid containing _______________carbon atoms molecules.
vi. Easters of fatty acid with glycerol is called____________________.
vii. Sphingosine + Fatty acid = ______________________.
viii. Vitamin B and Vitamin C are __________________soluble vitamins.
ix. The chemical name of vitamin E is ______________________.
x. Fatty acids which are not synthesized in human body are termed as ___________.
xi. Temperature at which enzymes activity is highest is called ___________temperature.
xii. Blood clotting disorder is due to the deficiency of vitamin_____________________.
xiii. Polysaccharides having same monosaccharide are called ______________________.
xiv. Carbohydrates are store in______________________________.

Q.2: Discuss the Biological functions of vitamin A, D, E and K.
Q.3: Discuss various factors that affect enzymes activities.
Q.4: Discuss biological role of Sodium, Iron, Phosphorus, Calcium and Copper.
Q.5: Discuss the classification and importance of protein in detail.
Q.6: Discuss Monosaccharide, Disaccharides and Oligosaccharides in detail.
Q.7: Discuss the structure and importance of lipids in detail.
Q.8: Attempt any TWO from the following.
a. Structure of DNA & RNA.
b. Homopolysaccharide & Heteropolysaccharide.
c. Properties of enzymes

Guess Paper 3: Biochemistry Spring – 2019 Past Papers

University Name – Confidential

NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

Q.1 (A): Fill in the Blanks: (07)
i. Krebs citric acid cycle is also known as_______________.
ii. Glyconeogenesis means, the formation of glucose from______________.
iii. ATP stands for_____________.
iv. Carbohydrates are store in the body in _____________tissues.
v. TSH stands for_____________.
vi. Amino acid broken down in the body to_______________.
vii. Glucagon and Insulin are the examples of _____________soluble hormones.
Q.1 (B): Select as TRUE / FALSE. (07)
i. Pentose phosphate pathway is known as TCA cycle.
ii. Glycogenolysis means formation of glycogen from glucose.
iii. HDL stands for High Density Lipoprotein.
iv. Fats are store in adipose tissue.
v. Polysaccharides cannot hydrolyze to monomers.
vi. The main structural Lipids found in the skin are called collagen.
vii. Alanine and Glycine are amino acid.

Q.2: Discuss various steps of Tricarboxylic Acid cycle.

Q.3: Discuss biosynthesis of saturated fatty acid.

Q.4: What are Phospholipids, steroids, triglycerides and cholesterol?

Q.5: Briefly discuss Electron Transport chain.

Q.6: Discuss the various steps of biosynthesis of Amino acid.

Q7. What is urea cycle? Discuss various steps of Urea cycle in detail.

Q.8: Write short note on any two of the following.
a) Gluconeogenesis.
b) Glycogenolysis.
c) Glycolysis.

Guess Paper 4: Biochemistry Spring – 2018 Past Papers

University Name – Confidential

NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

Q.1: Define / as directed the following: (14)
i. Glucose and Glycogen
ii. Digestion and Absorption
iii. Fats and Waxes
iv. Creatine and creatinine
v. Glycogenesis and Glycogenolysis.
vi. Essential and non essential amino acids.
vii. Saturated and Unsaturated fatty acid.

Q.2: How urea are synthesized in our body. Discuss its various steps in detail.
Q.3: Explain the Krebs cycle (TCA cycle) in detail.
Q.4: Discuss the process of ETC (Electron Transport chain)
Q.5: Discuss Biosynthesis and Breakdown of Glycogen.
Q.6: Explain Cholesterol in detail.
Q.7: What is Bioenergetics? Discuss the Oxidative Phosphoryaltion process in detail.
Q.8: Attempt any TWO from the following.
i. Difference between Liver glycogen and Muscle glycogen
ii. Steps of Glyclysis process
iii.Phospholipids.

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