Biomolecules  MCQs

MCQs of Biomolecules

Showing 131 to 140 out of 161 Questions
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131.
Which metal ions are considered as cofactor ?
(a) Zn2+, Fe2+, Cu2+
(b) Mg2+, Na2+, Ca2+
(c) Hg2+, Sn2+, Cu2+
(d) Na+, K+, Ba2+
Answer:

Option (a)

132.
If the cofactor is organic in nature, it is called a _____ .
(a) coenzyme
(b) apoenzyme
(c) cofactor
(d) active enzyme
Answer:

Option (a)

133.
The substrate fit in portion of the enzyme is called the _____ .
(a) active site of the enzyme
(b) lower layer of the enzyme
(c) specific site of reactant
(d) alosteric site
Answer:

Option (a)

134.
Which of the following statements is true ?
(a) Enzymes are carbohydrates.
(b) Enzymes increase the rate of reaction by 10-12 times.
(c) Enzymes are obtained in original form at the end of reaction.
(d) Enzymes are not obtained in original form at the end of reaction.
Answer:

Option (c)

135.
Working mechanism of enzyme canxplained by _____ model.
(a) lock and key
(b) hand - handglove
(c) substrate - intermediate
(d) All of the above
Answer:

Option (a)

136.
Which name is given to the enzyme which catalyses the oxidation ?
(a) Oxidoreductase
(b) Hydrolase
(c) Oxidase
(d) Diastase
Answer:

Option (c)

137.
Which ion cannot be as a cofactor in enzymes ? (GUJCET 2016)
(a) Cr3+
(b) Cu2+
(c) Mn2+
(d) Fe2+
Answer:

Option (a)

138.
What is scientific name of vitamin B1 ?
(a) Ascorbic acid
(b) Riboflavin
(c) Pyridoxine
(d) Thiamine
Answer:

Option (d)

139.
Which vitamin is not fat soluble ?
(a) A
(b) D
(c) K
(d) C
Answer:

Option (d)

140.
To which class vitamin B complex belong ?
(a) Fatsoluble
(b) Water soluble
(c) Fat - water insoluble
(d) Fat - water soluble
Answer:

Option (b)

Showing 131 to 140 out of 161 Questions
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