Which of the following is not explained by molecular orbital steering?

Thermal vibration create motion in the active site amino acid side chain that direct reactive groups in the substrate to interact

The juxtaposition of the side chain groups of amino-acid and the reactive groups of the substrate is not sufficient for proper catalysis

Overwhelm the vander waals repulsive forces that happen commonly between them

The active residues should guide the groups in the substrate for exact interaction by thermal vibration due to elevated temperature

Thermal vibration create motion in the active site amino acid side chain that direct reactive groups in the substrate to interact

Which of the following is not true for substrate collision theory?

Both enzyme and substrate should be flexible in forming transition states

Both enzyme and substrate stumble upon each other

Both enzyme and substrate provide good molecular orbital interactions

Specificity of the substrate binding site

Both enzyme and substrate should be flexible in forming transition states

14 + Mcqs in Enzyme Kinetics Mechanism Enzyme Action 1 in Technology Page 1 McqOptions

1.	Which is the first step involved in chymotrypsin mediated peptide bond hydrolysis?
A.	Acylation
B.	Specific acid-base catalysis
C.	General acid-base catalysis
D.	Deacylation
Answer» E.

Discussion

2.	The covalent catalysis is aided by one of the following method?
A.	General acid-base catalysis
B.	Specific acid-base catalysis
C.	Nucleophilic catalysis
D.	Substrate collision theory
Answer» D. Substrate collision theory

Discussion

3.	________________ involves substrates forming transient covalent bond with the residues present in the active site
A.	Covalent catalysis
B.	Specific acid-base catalysis
C.	General acid-base catalysis
D.	Lock and key model
Answer» B. Specific acid-base catalysis

Discussion

4.	If the catalysis involves participation of small organic molecules, cofactors, and amino-acid side chains from the enzyme is termed as ____________
A.	specific acid base catalysis
B.	general acid base catalysis
C.	substrate collision theory
D.	lock and key model
Answer» C. substrate collision theory

Discussion

5.	Which of the following is not explained by molecular orbital steering?
A.	The juxtaposition of the side chain groups of amino-acid and the reactive groups of the substrate is not sufficient for proper catalysis
B.	Overwhelm the vander waals repulsive forces that happen commonly between them
C.	The active residues should guide the groups in the substrate for exact interaction by thermal vibration due to elevated temperature
D.	Thermal vibration create motion in the active site amino acid side chain that direct reactive groups in the substrate to interact
Answer» D. Thermal vibration create motion in the active site amino acid side chain that direct reactive groups in the substrate to interact

Discussion

6.	The disruption of interactions between substrate and solvent is referred to as __________
A.	desolvation
B.	molecular orbital steering
C.	protonation
D.	deprotonation
Answer» B. molecular orbital steering

Discussion

7.	Which of the following is not true for substrate collision theory?
A.	Both enzyme and substrate stumble upon each other
B.	Both enzyme and substrate provide good molecular orbital interactions
C.	Specificity of the substrate binding site
D.	Both enzyme and substrate should be flexible in forming transition states
Answer» D. Both enzyme and substrate should be flexible in forming transition states

Discussion

8.	When the free energy occurs at standard conditions, it is termed as ______________
A.	Activation energy
B.	pKa
C.	Standard free energy change
D.	Gibbs free energy
Answer» D. Gibbs free energy

Discussion

9.	The target substrate molecules bind to active site of the enzyme transforming into products through a series of steps known as the ____________
A.	enzyme kinetics
B.	enzymatic mechanism
C.	chemical kinetics
D.	zero order reaction kinetics
Answer» C. chemical kinetics

Discussion

10.	In induced fit model, only a specific substrate can bind and produce desirable reaction.
A.	True
B.	False
Answer» B. False

Discussion

11.	The lock and key model deals with flexible nature of enzymes.
A.	True
B.	False
Answer» C.

Discussion

12.	The enzyme action model represented in the following diagram is ______________
A.	Fluid Mosaic Model
B.	Induced fit model
C.	Reflective index model
D.	Lock and Key Model
Answer» E.

Discussion

13.	Lock and key model was proposed by ______________ in 1890.
A.	Henri
B.	Miachelis and Menten
C.	Emil Fischer
D.	Daniel Koshland
Answer» D. Daniel Koshland

Discussion

14.	The study of rates of chemical reactions that are catalyzed by enzymes is referred to as ______________
A.	first order reaction kinetics
B.	zero order reaction kinetics
C.	chemical kinetics
D.	enzyme kinetics
Answer» E.

Discussion

Explore topic-wise MCQs in Technology.

Which is the first step involved in chymotrypsin mediated peptide bond hydrolysis?

The covalent catalysis is aided by one of the following method?

________________ involves substrates forming transient covalent bond with the residues present in the active site

If the catalysis involves participation of small organic molecules, cofactors, and amino-acid side chains from the enzyme is termed as ____________

Which of the following is not explained by molecular orbital steering?

The disruption of interactions between substrate and solvent is referred to as __________

Which of the following is not true for substrate collision theory?

When the free energy occurs at standard conditions, it is termed as ______________

The target substrate molecules bind to active site of the enzyme transforming into products through a series of steps known as the ____________

In induced fit model, only a specific substrate can bind and produce desirable reaction.

The lock and key model deals with flexible nature of enzymes.

The enzyme action model represented in the following diagram is ______________

Lock and key model was proposed by ______________ in 1890.

The study of rates of chemical reactions that are catalyzed by enzymes is referred to as ______________