Which of the following statements regarding enzyme inhibition is correct?

Q. 5 of Quiz-1446 (Que-ID : 3931)

Which of the following statements regarding enzyme inhibition is correct?

Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
Non-competitive inhibitors often bind to the enzyme irreversibly
Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate

Ans → (c)Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme

Explanation → Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme

This question is taken from this post → Biomolecules class 11 biology test | MCQs for NEET - attemp/practice

← ×

cancel update

More MCQs in - Biomolecules class 11 biology test | MCQs for NEET

Q. 1 of Quiz-1446 (Que-ID : 3927)

Feedback inhibition of enzymes is affected by which of the following

enzyme
substrate
end products
intermediate end products

Discuss View Answer

Q. 2 of Quiz-1446 (Que-ID : 3928)

An example of competitive inhibition of an enzyme is the inhibition of

succinic dehydrogenase by malonic acid
cytochrome oxidase by cyanide
hexokinase by glucose-6-phosphate
carbonic anhydrase by carbon dioxide

Discuss View Answer

Q. 3 of Quiz-1446 (Que-ID : 3929)

Insulin is made up of _ and _.

glucose and fructose
glucose and fructose
fructose and mannose
mannose and glucose

Discuss View Answer

Q. 4 of Quiz-1446 (Que-ID : 3930)

Enzymes increase the rate of reaction by

lowering activation energy
increasing activation energy
increasing temperature and pH
decreasing temperature and pH

Discuss View Answer

Q. 5 of Quiz-1446 (Que-ID : 3931)

Which of the following statements regarding enzyme inhibition is correct?

Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
Non-competitive inhibitors often bind to the enzyme irreversibly
Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate

Discuss View Answer

Q. 6 of Quiz-1446 (Que-ID : 3932)

Which of the following is not a pyrimidine?

Uracil
Cytosine
Guanine
Thymine

Discuss View Answer

Q. 7 of Quiz-1446 (Que-ID : 3933)

Hydrolysis of starch occurs with the help of

Peptidase
Amylase
Sucrose
Lipase

Discuss View Answer

Q. 8 of Quiz-1446 (Que-ID : 3934)

Assertion: Arachidic acid is an unsaturated fatty acid Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids

Both Assertion and Reason are true and Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion
Assertion is true, but Reason is false.
Both Assertion and Reason are false

Discuss View Answer

Q. 9 of Quiz-1446 (Que-ID : 3935)

Which of the following influence feedback inhibition of enzyme?

End product
External factors
Enzyme
Substrate

Discuss View Answer

Q. 10 of Quiz-1446 (Que-ID : 3936)

Which of the following is not a polysaccharide?

Lactose
Starch
Glycogen
Dextrin

Discuss View Answer

Q. 11 of Quiz-1446 (Que-ID : 3937)

Inulin is made up of _ and _

glucose and fructose
glucose and fructose
fructose and mannose
mannose and glucose

Discuss View Answer

Q. 12 of Quiz-1446 (Que-ID : 3938)

A protein having both structural and enzymatic traits is

Collagen
Trypsin
Myosin
Actin

Discuss View Answer

Q. 13 of Quiz-1446 (Que-ID : 3939)

NADP contains vitamin ______

Discuss View Answer

Q. 14 of Quiz-1446 (Que-ID : 3940)

With reference to enzymes, which one of the following statements is true?

Apoenzyme = Holoenzyme + Coenzyme
Coenzyme = Apoenzyme + Holoenzyme
Holoenzyme = Apoenzyme + Coenzyme
Holoenzyme = Coenzyme ? Apoenzyme

Discuss View Answer

Q. 15 of Quiz-1446 (Que-ID : 3941)

Inhibitor binds to the active site of the enzyme. Hence blocking the reaction. This is an example of

allosteric inhibition
feedback inhibition
uncompetitive inhibition
competitive inhibition

Discuss View Answer

Q. 16 of Quiz-1446 (Que-ID : 3942)

The fastest enzyme known is

DNA polymerase
carbonic anhydrase
carbonic dehydrogenase
DNA ligase

Discuss View Answer

Q. 17 of Quiz-1446 (Que-ID : 3943)

Lecithin is a

polysaccharide
protein
nucleic acid
lipid

Discuss View Answer

Q. 18 of Quiz-1446 (Que-ID : 3944)

The minimum amount of energy required to initiate a chemical reaction is called

enzymatic energy
activation energy
substrate energy
initiation energy

Discuss View Answer

Q. 19 of Quiz-1446 (Que-ID : 3945)

Enzymes, vitamins and hormones are common in

Enhancing oxidative metabolism
Being synthesised in the body of organisms
Being proteinaceous
Regulating metabolism

Discuss View Answer

Q. 20 of Quiz-1446 (Que-ID : 3946)

Nitrogenous bases present in DNA

Adenine, guanine, cytosine, uracil
Adenine, guanine, cytosine, thymine
Adenine, thymine, uracil
Guanine, uracil

Discuss View Answer

Q. 21 of Quiz-1446 (Que-ID : 3947)

Metabolic intermediates found in living system which are essential for growth and life is called___________

Saponins
Tannins
Secondary metabolite
Primary metabolites

Discuss View Answer

Q. 22 of Quiz-1446 (Que-ID : 3948)

Enormous diversity of protein molecules is due to

R groups of amino acids
Sequence of amino acids
Peptide bonds
Amino groups of amino acids

Discuss View Answer

Q. 23 of Quiz-1446 (Que-ID : 3949)

Anti-parallel strands of a DNA molecule mean that

One strand turns anticlockwise
Phosphate groups at the start of two DNA strands (poles) are in opposite position
Phosphate groups of two DNA strands at their ends share the same position
One strand turns clockwise