Unit#13: Biochemistry

1

Which lipid is hormone-like in function?

A Waxes B Phospholipids C Steroids D Triglycerides

2

Which nutrient is required in small amounts?

A Carbohydrates B Proteins C Fats D Vitamins

3

Lipids are insoluble in:

A Alcohol B Ether C Chloroform D Water

4

Fats provide how many calories per gram?

A 4 B 7 C 9 D 2

5

Which nutrient is essential for enzyme formation?

A Proteins B Carbohydrates C Lipids D Water

6

Which enzyme works best at acidic pH?

A Amylase B Pepsin C Trypsin D Lipase

7

Which nutrient is mainly required for energy?

A Proteins B Carbohydrates C Vitamins D Minerals

8

Which lipid forms cell membranes?

A Triglycerides B Steroids C Phospholipids D Waxes

9

Which vitamin is fat-soluble?

A Vitamin B B Vitamin C C Vitamin A D Vitamin B12

10

Cellulose is made up of:

A Glucose units B Fructose units C Galactose units D Sucrose units

11

Which bond links amino acids in proteins?

A Hydrogen bond B Ionic bond C Peptide bond D Glycosidic bond

12

Which process releases energy from food?

A Anabolism B Catabolism C Photosynthesis D Absorption

13

Which nutrient helps in absorption of fat-soluble vitamins?

A Proteins B Carbohydrates C Lipids D Minerals

14

Which enzyme breaks down starch into maltose?

A Lipase B Protease C Amylase D Pepsin

15

Which enzyme digests proteins in stomach?

A Trypsin B Amylase C Pepsin D Lipase

16

Which nutrient is mainly responsible for body growth and repair?

A Carbohydrates B Lipids C Proteins D Minerals

17

Which process involves synthesis of complex molecules?

A Catabolism B Anabolism C Digestion D Respiration

18

Lactose is found in:

A Milk B Fruits C Sugarcane D Wheat

19

Deficiency of proteins causes:

A Scurvy B Rickets C Kwashiorkor D Night blindness

20

Which biomolecule acts as catalyst in biological reactions?

A Lipids B Carbohydrates C Enzymes D Vitamins

21

Glucose belongs to which class of biomolecules?

A Proteins B Lipids C Carbohydrates D Nucleic acids

22

The basic unit of carbohydrates is:

A Fatty acid B Amino acid C Monosaccharide D Nucleotide

23

Which biomolecule provides structural support in plants?

A Starch B Glycogen C Cellulose D Sucrose

24

Denaturation of enzyme is caused by:

A Low temperature B Optimal pH C High temperature D Low substrate

25

Which nutrient provides insulation to the body?

A Proteins B Carbohydrates C Lipids D Vitamins