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Bio Molecules

The document contains a series of questions related to biochemistry, focusing on topics such as polymers, carbohydrates, proteins, vitamins, nucleic acids, and their structures and functions. It includes multiple-choice questions and open-ended questions that require explanations of various biochemical concepts. Key topics include the storage of glycogen, hydrolysis of sucrose and lactose, the structure of proteins, and the differences between DNA and RNA.

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ravdiroshan
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8 views6 pages

Bio Molecules

The document contains a series of questions related to biochemistry, focusing on topics such as polymers, carbohydrates, proteins, vitamins, nucleic acids, and their structures and functions. It includes multiple-choice questions and open-ended questions that require explanations of various biochemical concepts. Key topics include the storage of glycogen, hydrolysis of sucrose and lactose, the structure of proteins, and the differences between DNA and RNA.

Uploaded by

ravdiroshan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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1. Which of the following polymer is stored in the liver of animals?

(i) Amylose (ii) Cellulose (iii) Amylopectin (iv) Glycogen

2. Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives _________.

(i) 2 molecules of glucose (ii) 2 molecules of glucose + 1 molecule of fructose

(iii) 1 molecule of glucose + 1 molecule of fructose (iv) 2 molecules of fructose

3. Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure.
α-helix structure of protein is stabilised by:

(i) Peptide bonds (ii) van der Waals forces (iii) Hydrogen bonds
(iv) Dipole-dipole interactions

4. Which of the following acids is a vitamin?


(i) Aspartic acid (ii) Ascorbic acid (iii) Adipic acid (iv) Saccharic acid

5. Nucleic acids are the polymers of ______________.

(i) Nucleosides (ii) Nucleotides (iii) Bases (iv) Sugars


6. DNA and RNA contain four bases each. Which of the following bases is not present in RNA?

(i) Adenine (ii) Uracil (iii) Thymine (iv) Cytosine

7. Which of the following B group vitamins can be stored in our body?

(i) Vitamin B1 (ii) Vitamin B2 (iii) Vitamin B6 (iv) Vitamin B12

8. Which of the following bases is not present in DNA?

(i) Adenine (ii) Thymine (iii) Cytosine (iv) Uracil

9. Assertion: Vitamin D can be stored in our body.

Reason: Vitamin D is fat soluble vitamin.


1. Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are
insoluble in water. Explain.

2. Why cannot vitamin C be stored in our body?

3. What are the expected products of hydrolysis of lactose?

4. The melting points and solubility in water of amino acids are generally higher than that of the corresponding halo
acids. Explain.

5. Where does the water present in the egg go after boiling the egg?

6. What are monosaccharides?

7. What are reducing sugars?

8. What do you understand by the term glycosidic linkage?

9. What are the hydrolysis products of (i) sucrose and (ii) lactose?
10. What happens when D-glucose is treated with the following reagents?

(i) HI

(ii) Bromine water

(iii) HNO3

11. What are essential and non-essential amino acids? Give two examples of each type.

12. Define the following as related to proteins

(i) Peptide linkage

(ii) Primary structure

(iii) Denaturation.

13. Differentiate between globular and fibrous proteins.

14. Explain the amphoteric behaviour of amino acids?


15. What are enzymes?

16. How are vitamins classified?

17. What are nucleic acids? Mention their two important functions

18. What is the difference between a nucleoside and a nucleotide?

19. Write the differences between DNA and RNA.

20. What are the different types of RNA found in the cell?

21. Write a note on DNA Fingerprinting.

22. What are proteins?


1.

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