Chemistry of Life - Chapter No 18

Right Answers have been shown below in red color.

1. The group of chemical substances which take part in the life-sustaining processes and gives us energy, is called __________.

a) Food
b) Energy
c) Catalyst
d) Minerals

2. The components of food which deals with different functions, are called __________.

a) Carbohydrates
b) Nutrients
c) Starch
d) None of these

3. Fats, minerals and water, are all called __________.

a) Food
b) Material
c) Nutrients
d) None of these

4. Digestion is a process in which non-diffusible organic molecules are changed into__________ smaller molecules.

a) Proteins
b) Fats
c) Vitamins
d) Diffusible

5. For vital processes, the__________ is the most important source of energy.

a) Maltose
b) Carbohydrate
c) Complex
d) Sugar

6. The formula for glucose is __________.

a) Cِ6H12O6
b) CO2
c) CH2OH
d) C15H31

7. For all living cells, the protein is an important __________.

a) Polymer
b) Constituent
c) Fat
d) None of these

8. The hydrates of carbon, are called __________.

a) Amino acids
b) Carbohydrates
c) Proteins
d) Polysaccharides

9. The general formula for carbohydrates, is__________.

a) C6H12O6
b) CnH2n+2
c) Cx(H2O)y
d) None of these

chemistry of life - chapter no 18

a) C6H12O6 + 6O2
b) C6H6O6 + 6H2O
c) C6H12O6 + 𐤃H
d) C6H6O6 + 𐤃H

11. There are __________ main types of carbohydrates.

a) Five
b) Three
c) Two
d) Four

12. Monosaccharides are the __________ carbohydrates.

a) Simplest
b) Complex
c) Equal
d) None of these

13. Aldoses are those carbohydrates which contain __________ functional group.

a) Ketonic
b) Simple
c) Aldehydic
d) None of these

14. The carbohydrates containing __________ functional group, are called ketoses.

a) Ketonic
b) Aldehydic
c) Ketosis
d) Complex

15. Glucose is an example of __________.

a) Fructose
b) Aldoses
c) Ketoses
d) Protein

16. Fructose is an example of __________.

a) Ketoses
b) Aldoses
c) Sunlight
d) Protein

17. The glucose produces __________ for our body.

a) Starch
b) Amylose
c) Energy
d) None of these

18. Polysaccharides are partially __________ in water.

a) Soluble
b) Insoluble
c) Difference
d) None 0f these

19. We can get vitamin-A from __________.

a) Cow and fish
b) Milk and fish.
c) Cow and tomatoes
d) None of these

20. We can get vitamin-D from __________.

a) Meat and fish
b) Meat and tomatoes
c) Glucose and fish
d) Glucose and tomatoes

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