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Worksheets

Molecules Of Life

Total questions: 69

Worksheet time: 35mins

Name
Class
Date
1.

Write about non standard amino acids and their biological importance.

a)

1

b)

2

2.

Define Zwitterion with a suitable example.

a)

1

b)

2

3.

Define Buffers with a suitable example.

a)

1

b)

2

4.

Define epimers with a suitable example.

a)

1

b)

2

5.

Define rancidity with a suitable example.

a)

1

b)

2

6.

Define mutarotation with a suitable example.

a)

1

b)

2

7.

In what biological category would you put glyceraldehyde?

a)

1

b)

2

8.

What biological category does Stearic Acid belong to?

a)

1

b)

2

9.

What biological category does Phosphatidylcholine belong to?

a)

1

b)

2

10.

What biological category does Oleic Acid belong to?

a)

1

b)

2

11.

Glucose is a _______ sugar.

a)

1

b)

2

12.

Adenine is a ______.

a)

1

b)

2

13.

What biological category does cholesterol belong in?

a)

1

b)

2

14.

What biological category does cerebroside belong in?

a)

1

b)

2

15.

Biological category of Ribose

a)

1

b)

2

16.

Biological category of chitin

a)

1

b)

2

17.

What is MUFA?

a)

1

b)

2

18.

Differentiate between acidic and basic amino acids.

a)

1

b)

2

19.

Differentiate between Reducing and Non-Reducing Disaccharides.

a)

1

b)

2

20.

Differentiate between essential and non essential amino acids.

a)

1

b)

2

21.

Differentiate between Starch and Glycogen.

a)

1

b)

2

22.

Differentiate between Glycerolipids and Sphingolipids

a)

1

b)

2

23.

Explain the salient features of B DNA.

a)

1

b)

2

24.

Name the amino acids which absorb UV light. Which one absorbs the maximum UV light?

a)

1

b)

2

25.

Explain briefly the effect of unsaturation on the melting point of fatty acids using suitable examples.

a)

1

b)

2

26.

Alpha D Glucopyranose and Beta D Glucopyranose are

a)

1

b)

2

27.

D Glucose and D Galactose are

a)

1

b)

2

28.

D Fructose and L Fructose are

a)

1

b)

2

29.

Examples For Imino Acids

a)

1

b)

2

30.

example For Synthetic Analogue of nucleotide

a)

1

b)

2

31.

Example for Sphingolipid

a)

1

b)

2

32.

An amino acid that optically inactive

a)

1

b)

2

33.

Amino acid with a pK value close to the biological pH

a)

1

b)

2

34.

Write briefly about the organisation of DNA into chromatin.

a)

1

b)

2

35.

Why do Amino Acid act as buffer?

a)

1

b)

2

36.

Lactose exists in two anomeric forms while no anomeric forms of sucrose have been reported. Why?

a)

1

b)

2

37.

Why is DNA more stable than RNA?

a)

1

b)

2

38.

DNA which is rich in GC pairs melts at higher temperatures than DNA rich in AT pairs. Why?

a)

1

b)

2

39.

Why does a protein which is rich in basic amino acids exhibit a positive charge?

a)

1

b)

2

40.

Elaborate the role of carbohydrates in biological systems.

a)

1

b)

2

41.

Why are Triglycerides a preferred choice for storage of energy as compared to Glycogen?

a)

1

b)

2

42.

Describe the properties of water which make it an ideal solvent.

a)

1

b)

2

43.

Briefly explain the functions of RNA.

a)

1

b)

2

44.

Structure of Beta D Glucopyranose

a)

1

b)

2

45.

Structure of Serine

a)

1

b)

2

46.

Structure of phosphatidic acid.

a)

1

b)

2

47.

Structure Of Phenylalanine.

a)

1

b)

2

48.

Structure Of 2-Deoxyribose.

a)

1

b)

2

49.

Why is sucrose a non reducing sugar and lactose a reducing sugar?

a)

1

b)

2

50.

Derive the Handerson-Hasselbalch Equation.

a)

1

b)

2

51.

Write about the role of water as a reactant in biological systems.

a)

1

b)

2

52.

Difference between L- and D- Amino Acids.

a)

1

b)

2

53.

The alpha and beta forms of glucose are known as

a)

1

b)

2

54.

Disaccharides consist of two monosaccharide units held together by a

a)

1

b)

2

55.

Which is the smallest carbohydrate?

a)

1

b)

2

56.

Molisch Test is used for

a)

1

b)

2

57.

Which type of monosaccharides are the most common in the human body?

a)

1

b)

2

58.

What is the general formula for Carbohydrates?

a)

1

b)

2

59.

Explain the concept of invert sugars.

a)

1

b)

2

60.

The polysaccharide used in assessing the glomerular fitteration rate (GFR) is

a)

1

b)

2

61.

What are the two factors that typically effect the functioning of an enzyme?

a)

1

b)

2

62.

Define the term Anomer and Epimer.

a)

1

b)

2

63.

A pentapeptide on partial hydrolysis gave three tripeptides fragments: Gly-Val-Ala,

Phe-Gly-Val, Val-Ala-,Leu. Identify the sequence of the amino acid in a pentapeptide.

a)

1

b)

2

64.

Why ATP is called energy storage compounds?

a)

1

b)

2

65.

Draw the structure of ATP.

a)

1

b)

2

66.

Write a short note on Starch And then one on cellulose.

a)

1

b)

2

67.

What is the difference between fats and oils?

a)

1

b)

2

68.

What happens when freshly prepared aqueous solution of alpha-D-Glucose or beta- D-

glucose is kept at room temperature for sometime?

a)

1

b)

2

69.

Define the term isoelectric point.

a)

1

b)

2