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This graph represents the relation of the enzyme activity with concentration of their specific substrate. The km-value is.........


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Important Questions on Enzymes

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Biology>Plant Physiology>Enzymes>Classification of Enzymes
Explain lock and key theory of enzyme action and draw a labelled diagram of a model.
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
What is enzyme? Write the name of two enzymes?
HARD
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Explain the mode of enzyme action on the basis of lowering of activation energy. Draw a labelled diagram to show activation energy.
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which of the following is not a function of the skeletal system?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which of the following describes the given graph

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HARD
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which type of tissue is correctly paired with its location?
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Biology>Plant Physiology>Enzymes>Classification of Enzymes
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 _____
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Biology>Plant Physiology>Enzymes>Classification of Enzymes
Given below are the four schematics that describe the dependence of the rate of an enzymatic reaction on temperature. Which of the following combination is true for thermophilic and psychrophilic organisms?

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MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Ribozymes are:
A) Catalytic RNA
B) Non-Protein enzymes
C) Nucleic acids
D) Group of ribosomes
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes

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

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Biology>Plant Physiology>Enzymes>Classification of Enzymes
The function of the gap junction is to:
HARD
Biology>Plant Physiology>Enzymes>Classification of Enzymes

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

MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Epithelial cells in animals are held by specialized junctions, one of them being "Gap junction". Function of a "Gap junction" is to
HARD
Biology>Plant Physiology>Enzymes>Classification of Enzymes
It is much easier for a small animal to run uphill than for a large animal, because:
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which of the following statements is true about glandular epithelium in the salivary gland?
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Biology>Plant Physiology>Enzymes>Classification of Enzymes
Part of epidermis that keeps out unwanted particles is called:
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
A person has 400 million alveoli per lung with an average radius of 0.1 mm for each alveolus. Considering the alveoli are spherical in shape, the total respiratory surface of that person is closest to
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes

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

 

EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
When RNAse enzyme is denatured by adding urea, which ONE of the following combinations of bonds would be disrupted?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Select the option which is not correct with respect to enzyme action: