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Biomolecules pdf1

The document consists of multiple-choice questions and short answer prompts related to biomolecules, covering topics such as the properties of starch, cellulose, proteins, vitamins, and amino acids. It includes questions about the structure and function of various biomolecules, as well as their chemical reactions and classifications. The document serves as a study guide for understanding key concepts in biochemistry.

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abejaynair77
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13 views2 pages

Biomolecules pdf1

The document consists of multiple-choice questions and short answer prompts related to biomolecules, covering topics such as the properties of starch, cellulose, proteins, vitamins, and amino acids. It includes questions about the structure and function of various biomolecules, as well as their chemical reactions and classifications. The document serves as a study guide for understanding key concepts in biochemistry.

Uploaded by

abejaynair77
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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Topic – Biomolecules

MULTIPLE CHOICE QUESTIONS [Q1 TO Q11] MM40


1. Amylopectin is insoluble in water and constitutes about
a) 15 – 20 % of starch c) 20 - 40 % of starch
b) 20 – 40 % of starch d) 80- 85 % 0f starch
2. Cellulose is not digested by human beings due to the absence of
cellulose hydrolysing enzyme called-
a) Cellulase c) zymase
b) Invertase d) urease
3. Fructose reduces tollens reagent due to –
a) Primary alcoholic group c) secondary alcoholic group
b) Asymmetric carbon d) enolization of fructose followed by
conversion to aldehyde by base
4. Which of the following reactions of glucose can be explained only by its
cyclic structure
a) Glucose forms pentaacetate
b) Glucose reacts with hydroxyl amine to form an oxime
c) Pentaacetate of glucose does not react with hydroxylamine
d) Glucose is oxidised by HNO3 to gluconic acid
5. Which of the following polymer is stored in the liver of animals –
a) Amylose c) cellulose
b) Amylopectin d) glycogen
6. Which of the following naturally occurring α amino acids are optically
inactive
a) Glycine b) Alanine c) Leucine d) Valine
7. Proteins can be classified in to two types on the basis of their
intermolecular shapes examples of globular protein are –
a) Insulin b) keratin c) Albumin d) Myosin
8. Which of the following B group vitamin can be stored in our body –
a) Vitamin B1 b) vitamin B2 c) vitamin B6 d) vitamin B12
9. α helix structure of protein is stabilised by –
a) Peptide bonds b) van der waals forces c) hydrogen bonds d) dipole
dipole attractions
10.Disaccharides that are reducing in nature are-
a) Sucrose and lactose c) sucrose and maltose
b) Lactose and maltose d) sucrose, lactose and maltose
11.What are the hydrolysis products of -
a) Sucrose b) lactose
12.Why cannot vitamin C be stored in our body ?
13.What are reducing sugars?
14.What type of bonding helps in stabilising the alpha helix structure of
proteins?
15.Name two fat storing tissues in human body.
16.What is the basic structural difference between – starch and cellulose
17.Explain amphoteric behaviour of amino acids ?
18.Name the protein and its shape present in oxygen carrier in human
body?
19. Name the of vitamin responsible for the coagulation of blood ?
20.What happens when D glucose is treated with the following reagents-
a) HI b) Br2 water c) NH2OH d) HCN
21.Explain - a) peptide bond b) glycosidic linkage c) reducing sugar d)
denaturation of protein
22.What are essential and nonessential aminoacids ?
23.Why pentaacetate of glucose does not react with hydroxyl amine?
24. Define the term – Native protein , invert sugar
25.Distinguish between –
a) DNA and RNA
b) Nucleoside and nucleotide
c) Alpha helix and beta pleated structure
d) Fibrous and globular protein

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