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Sulphur is present in

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Important Questions on Biomolecules

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Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
A non-proteinaceous enzyme is:
HARD
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Explain different types of co-factors.
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Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Which of the following describes the given graph

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EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Which one of the following statements is correct, with reference to enzymes?
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes

Write short note on the following- Enzyme.

EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Co-enzymes are components of an enzyme complex which are necessary for its function. Which of these is a known co-enzyme?
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Which ONE of the following coenzymes is required for the conversion of L-alanine to a racemic mixture of D- and L-alanine?
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Serine proteases are called so because they
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
The enzyme present in the curd is
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
The enzyme that converts glucose into ethylalcohol and carbon dioxide is
MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Select the option which is not correct with respect to enzyme action:
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes

From which enzymes are made?

EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
The formation of the Enzyme - Substrate complex is essential for
HARD
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: 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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HARD
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: 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

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Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Match the following lists.
  List-I   List-II   List-III
A Coenzymes are organic compound i No structure similarities I Ribose-5 phosphate isomerase
B Isomerases ii Differ from inorganic catalysis II During catalysis
C Non-competitive enzyme inhibition iii Catalyzing interconversion of optical positional isomers III Operates at high temperatures also
D Enzyme catalysts iv With the apoenzyme only as a transient IV Metal ion of copper

The correct match is:

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Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Solid and dotted lines represent the activities of pepsin and salivary amylase enzymes of the digestive tract, respectively. Which one of the following graphs best represents their activity vs pH?
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Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes

Match the entries in column I and Column II. Which one of the following choices is correct?

  Column I   Column II
(a) Haeme (1) Cofactor
(b) NAD (2) Vitamin
(c) Zinc (3) Coenzyme
(d) Niacin (4) Prosthetic group
HARD
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Distinguish between apoenzyme and cofactor.
EASY
Biology>Cell : Structure and Functions>Biomolecules>Biomolecules in the Cell: Enzymes
Which of the following is correct statement?