Biomolecules
1. About 98 percent of living things are made up of 6 elements which are Carbon,Hydrogen,nitrogen,oxygen and
A. Sulphur and phosphorus
B. Magnesium and Sodium
C. Calcium and phosphorus
D. Sulphur and calcium
2. Which component is found in the same percentage in a bacterial cell and in a mammalian cell
A. Water
B. Lipids
C. Protein
D. Carbohydrates
3. Reaction in which simple substances combine to form complex substances is called
A. Metabolic
B. Catabolic
C. Anabolic
D. Amphibolic
4. What is the specific heat of vaporization of water
A. 574 kcal/kg
B. 674 kcal/kg
C. 784 kcal/kg
D. 584 kcal/kg
5. A complex substance which one hydrolysis yields polyhydroxyl aldehyde or Ketone is called.
A. Carbohydrate
B. Water
C. Lipids
D. Nucleic acids
6. Which of the following carbohydrates cannot be hydrolyzed.
A. Monosaccharides
B. Oligosaccharides
C. Disaccharides
D. Polysaccharides.
7. Which of the following polysaccharides is soluble in hot water
A. Starch
B. Glycogen
C. Amylose
D. Amylopectin
8. The bond between 2 nitrogenous bases is called
A. Hydrogen bond
B. Peptide bond
C. Glycosidic bond
D. Phosphodiester bond
9. The bond between 2 amino acids is called
A. Hydrogen bond
B. Peptide bond
C. Glycosidic bond
D. Phosphodiester bond
10. The bond between 2 monosaccharides is called
A. Hydrogen bond
B. Peptide bond
C. Glycosidic bond
D. Phosphodiester bond
11. Which of the following turns reddish brown on addition of iodine
A. Starch
B. Glucose
C. Glycogen
D. Insulin
12.which of the following is a biocatalyst
A carbohydrates
B lipids
C nucleic acids
D. Enzymes
13. Which of the following vitamins helps for amino acid metabolism.
A D
B K
C B6
D B1
14. Which of the following is the most abundant organic compound found in cells
A lipids
B carbohydrate
C. Proteins
D. Nucleic acid
15. Proteins which can be gotten from animal sources are called
A. Essential proteins
B. Nonessential proteins
C. First Class proteins
D. Second class proteins
16. Proteins which can be gotten only from food sources and cannot be synthesized in the body are called
A. Essential proteins
B. Nonessential proteins
C. First Class proteins
D. Second class proteins
17. Which of the following show catalytic properties in the body
A. Nucleic acid
B Carbohydrate
C Lipids
D. Proteins
18. The most abundant biomolecule on earth are
A. Nucleic acids
B. Carbohydrates
C. Lipids
D. Proteins
