MEDIUM
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Which of the following is (are) not chemical reactions?

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Important Questions on Transformation

HARD
Explain lock and key theory of enzyme action and draw a labelled diagram of a model.
MEDIUM
What is enzyme? Write the name of two enzymes?
HARD
Explain the mode of enzyme action on the basis of lowering of activation energy. Draw a labelled diagram to show activation energy.
EASY

Match the following?

Enzymes Functions
(a) Lyases (i) Oxido reduction
(b) Isomerases (ii) Link compounds
(c) Dehydrogenases (iii) Transfer of group
(d) Ligases (iv) Interconversion
    (v) Removal of groups

 

MEDIUM
Ribozymes are:
A) Catalytic RNA
B) Non-Protein enzymes
C) Nucleic acids
D) Group of ribosomes
HARD

Study the following

(I) Km value Affinity of the enzyme Inverse measure enzyme affinity
(II) Hydrolases P-O bonds Linking 2 compounds
(III) Transferases Transfer of a group Inhibitor of reaction
(IV) Emil Fisher Lock and key hypothesis Formation of ES complex

The correct combinations are

EASY
Bottled fruit juices brought from the market are clearer as compared to those made at home because the bottled juices are clarified by the use of _____
EASY

Identify the labelled parts 1, 2, 3, 4 in the concept of activation energy shown in the below diagram?

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MEDIUM
Which of the following describes the given graph

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EASY
When RNAse enzyme is denatured by adding urea, which ONE of the following combinations of bonds would be disrupted?
MEDIUM
Select the option which is not correct with respect to enzyme action:
HARD
Match the enzyme in column I with its function in column II and choose the correct option.
Column – I Column – II
A. β -galactosidase 1. Joining of DNA fragments
B. Permease 2. Peptide bond formation
C. Ligase 3. Hydrolysis of lactose
D. Ribozyme 4. Increases permeability to β -galactosidase
MEDIUM
Which one of the following enzymes contains Mo as the prosthetic group?
EASY

Template theory of enzyme action is supported by

MEDIUM
Enzymes are biocatalyst of the body, which fasten the biochemical reactions and are regulated by various factors. Generally, the majority of the enzymes are apoenzymes which represent the protein part of an enzyme. Which of the following biocatalyst is non-protein in nature?
EASY
List three important properties of enzymes.
HARD
Which of the following statements regarding coenzymes and prosthetic groups of enzymes is not true?
EASY
Genes express their character by forming
EASY
What do you understand by the term apoenzyme?