EASY
Earn 100

Describe enzyme structure.

Important Questions on Biomolecules

MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
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?
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
What is enzyme? Write the name of two enzymes?
HARD
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Explain the mode of enzyme action on the basis of lowering of activation energy. Draw a labelled diagram to show activation energy.
HARD
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Explain lock and key theory of enzyme action and draw a labelled diagram of a model.
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Ribozymes are:
A) Catalytic RNA
B) Non-Protein enzymes
C) Nucleic acids
D) Group of ribosomes
EASY
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors

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>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
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 _____
HARD
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors

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>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Which of the following describes the given graph

Question Image
EASY
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors

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

Question Image

EASY
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
When RNAse enzyme is denatured by adding urea, which ONE of the following combinations of bonds would be disrupted?
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Select the option which is not correct with respect to enzyme action:
EASY
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors

Template theory of enzyme action is supported by

HARD
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
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
EASY
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Enzymes are sensitive to
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
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
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
What is an enzyme?
HARD
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Which of the following statements regarding coenzymes and prosthetic groups of enzymes is not true?
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Which one of the following enzymes contains Mo as the prosthetic group?
EASY
Biology>Cell: Structure and Function>Biomolecules>Factors Affecting Enzyme Activity and Cofactors
Genes express their character by forming