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CBSE 11th Standard Biology Subject Biomolecules HOT Questions 1 Marks Questions With Solution 2021

Published on: 29/05/2021

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Std: 11th Standard CBSE - Biology

chapter: - HOT Questions

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Questions:

Generic 2

10 x 2 = 20

What is histone protein. Where it is found in cell. Mention the function of it in eukaryotic cell.

Identify the secondary protein and quaternary proteins in following examples. Trypsin, Haemoglobin protein, Myosin protein, Actin protein, Albumin, globulin.

The polymer of fructose is known as?

Why is cellulose is considered as a homopolymer?

Name one element invariably found in proteins, but not in all carbohydrates and lipids.

Why does starch turn blue black with iodine?

Name the basic unit of chitin.

The enzymes activity gets destroyed on increasing high temperature.What happens during that state that enzyme looses its activity?

Pepsin is an intracellular or extracellular enzyme. Which is correct?

10.

The enzyme that work only in presence of a cofactor or coenzyme is called

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Answers Key:

Generic 2

10 x 2 = 20

Basic proteins rich in lysine, found in nucleoplasm. Binds with negatively charged DNA forming Octamers called nucleosome.

Secondary Protein: Myosin protein, Actin protein, Albumin, globulin, Trypsin Tertiary Protein: ( Hemoglobin protein)

Inulin is a fructose polymer found in many plants. It can be found in the roots and rhizomes of plants.

Since, cellulose is made of only one type of monomer (glucose), that is why it is considered as a homopolymer.

Nitrogen is found invariably in proteins, but not in all carbohydrates and lipids.

Appearance of blue colour with the addition of iodine is due to its reaction with amylose of starch.

N-acetyl glucosamine is the basic unit of chitin.

The enzyme becomes inactive on increasing temperature because the protein denature at high temperature due to which its tertiary structure gets disrupted

Intracellular Enzymes	Extracellular Enzymes
Examples – DNA and RNA polymerase, ATP synthetase, etc. The lysosome and peroxisomes also contain intracellular enzymes.	Examples – Peptidase, amylase, trypsin, collagenase, pepsin, sucrase, maltase, kinases, etc.

10.

Apoenzyme works only in the presence of a cofactor or coenzyme