Dr. M.
ASIF RANA
PhD; BIOTECHNOLOGY
Carbohydrates, Proteins, Lipids & Water
NOTE: The candidates should not mark answer on the question paper. Carefully mark (FILL Circle) only
one answer for each question on the ANSWER SHEET.
1. How many peptide bonds will be present in a B) Fructose D) All of these
polypeptide chain composed of 30 amino acids? 10. Glycogen is found stored in ______ in human
A) 30 C) 31 body.
B) 29 D) 60 A) Muscle and liver
2. Which of the following is an unsaturated fatty B) Around belly and hips
acid? C) Around thighs and belly
A) Acetic acid C) Oleic acid D) Almost all cells
B) Butyric acid D) Palmitic acid 11. The number of amino acids that have been
3. 2 Amino acids in which the R-group is found to occur in cells and tissues are:
hydrogen in both cases: A) 170 C) 25
A) Glycine and Alanine B) 20 D) 4
B) Leucine and valine 12. The primary structure of a protein is
C) Alanine and leucine maintained by:
D) None A) Ionic bond
4. Acyl – glycerol’s like fats and oils are esters B) Disulphide bond
formed by condensation reaction between: C) Peptide bond
A) Fatty acids and water D) Hydrogen bond
B) Fatty acids and glucose 13. If in lipids there is an higher proportion of
C) Fatty acids and alcohols unsaturated fatty acids then it will be:
D) Fatty acids and phosphates A) Oils C) Phenols
5. Which one of the following is the formula B) Waxes D) Fats
structure of D (α) glucose? 14. The type of carbohydrates which has high
molecular weight and is sparingly soluble in
water:
A) C) A) Monosaccharides
B) Polysaccharides
C) Disaccharides
D) Maltose
15. The sequence of amino acid is major factor in
which type of protein classification?
B) D) A) Primary proteins
B) Globular proteins
C) Secondary proteins
D) Fibrous proteins
6. Waterproof surfaces like cuticle of leaf and 16. Which of the following holds the alpha helix of
protective covering of an insect’s body are: protein in its place?
A) Phospholipids C) Terpenoids A) R-group C) Amino group
B) Waxes D) Acyl glycerols B) Carboxylic group D) Hydrogen bond
7. ___________ is most abundant carbohydrate in 17. What percentage of water is present in bone
nature. cells?
A) Chitin C) Starch A) 80%
B) Glycerol D) Cellulose B) 65%
8. Pick the carbohydrate intermediates in C) 89% D) 20%
respiration and photosynthesis both? 18. Which of the following is a polar solvent?
A) Ribose and heptulose A) Alcohol C) Water
B) Glucose and galactose B) Benzene D) Ether
C) Glyceraldehydes and dihydroxyacetone
19. In an amino acid in which the R-Group is
D) Fructose and ribulose
methyl, it name will be:
9. Pick the Keto isomer of glucose?
A) Alanine C) Methylene
A) Mannose C) Galactose
B) Glycine D) Valine
Dr. M. ASIF RANA
PhD; BIOTECHNOLOGY
20. Fatty acid are the organic compounds C) Ribose
containing hydrogen, oxygen and one of the D) Polymers; polypeptides
following are: 31. Proteins may have 3000 or even more ____.
A) –COOH C) Acyl A) Number of amino acids
B) –NH2 D) Sucrose B) Types of amino acids
21. Which of the following is made up of hexose sugar C) Polypeptide units
subunits? D) Molecular weight
A) Sucrose C) Cellulose 32. The Covalent bond present in Oils is called:
B) Amylose D) All of these A) Peptide bond
22. Starches give ____ color with iodine. B) Phosphodiester bond
A) Blue C) Red C) Glycosidic bond
B) Yellow D) No D) None of above
23. The number and sequence of amino acids along 33. Normal Hb and sickle cell Hb (Hb-S) don’t
a polypeptide chain is. differ in their:
A) Specified by gene A) Primary structure
B) Determined by primary structure of protein B) Number of amino acid residues
C) Dependent on final shape of protein C) Quaternary structure
D) Determined by secondary structure of protein D) Molecular weights
24. All carbon atoms in monosaccharides except one: 34. Sugars are characterized by having which two
A) Are asymmetric or chiral carbons functional groups?
B) Have OH group A) Carbonyl & methyl
C) Are involved in ring formation B) Carbonyl & hydoroxyl
D) Are polyhydroxy C) Hydroxyl and amino
25. Both parts (units) of _____ contain nitrogen. D) Sulfhydryl & Phosphate
A) Phosphatidyl-choline 35. Which of the following protein is present in
B) Acetyl-choline hairs?
C) alanyl-glycine A) Keratin
D) Phosphatidyl-serine B) Actin
26. Which of the given sugars are usually branched C) Fibrin
and tasteless? D) Myoglobin
A) Monosaccharides 36. Humans don’t utilize them in metabolism.
B) Oligosaccharides A) Fats
C) Polysaccharides
B) Oils
D) Both B & C
C) Phospholipids
27. Polysaccharides that we ingest in fruits, grains
D) Fatty acids
seeds and tubers is/are:
A) Starch 37. Polymeric molecules that are part of all cellular
B) Cellulose membranes are:
C) Amylose A) Phospholipids
D) All above B) Terpenoids
28. Mainly Hydrogen bonds are found involved in C) Proteins
maintaining the ______ of a protein molecule. D) Acylglycerols
A) Primary structure 38. Which of the following monosaccharides are rare
B) Secondary structure in nature and found in bacteria?
C) Tertiary structure A) Trioses C) Pentoses
D) All levels except primary level B) Tetroses D) Hexose
29. An element that is not the part of all proteins? 39. Steroids in human body represent an important
A) Nitrogen sub-group within:
B) Sulfur A) Waxes C) triglycerides
C) Oxygen B) Phospholipids D) Terpenoids
D) Hydrogen 40. Either end of a ______ can engage in a
30. From biological point of view, the most common condensation reaction with another amino acid
hexose is. to form peptide bond.
A) Glucose C) Glyceraldehyde A) Di-peptide C) Tetra-peptide
B) Maltose D) Ribose B) Tri-peptide D) Any above
