MCQs of Biology – Enzymes

The branch of science dealing with biological catalysts is called:

The term’ enzyme’ was coined by:

Enzymes were discovered by:

Enzyme complex involved in alcoholic fermentation is:

The enzyme, which converts glucose into ethyl alcohol, is:

Earliest knwon enzyme was:

The enzyme extracted from yeast by Buchner was:

Buchner proved that it is not living yeast but a nonliving substance in it, which causes fermentation . This substance is:

The enzyme first extracted in crystalline form is:

The enzyme first extracted in crystalline form was form:

Enzymes are absent in:

In plants , enzymes occur in:

Metabolic processes in the body are catalysed by:

Enzymes are essential in our body because these:

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these:

A group of proteins in living cells, which catalyse reactions, are called:

Who suggested that enzymes are proteinaceous?

Chemically enzymes are:

Enzymes differ from inorganic catalysis in:

What is true about enzymes?

Which is not correct:

Enzymes are polymers of:

Specificity of a protein in enzyme action depends open:

Synthesis of enzymes takes place by:

What is common among amylase, rennin and trypsin?

In which one of the following sets of three items each belong to the category mentioned against them?

Which one of the following has catalytic activity?

Who has discovered the role of RNA as a catalyst?

Which is not a protein?

A ribozyme is:

Ribozyme was discovered in:

Telomerase in an enzyme which is a:

‘ One gene- one enzyme’ concept was given by:

Which of the following was used in experiments by Beadle and Tatum to propose one gene- one enzyme hypothesis?

‘ One gene-one enzyme’ concept means:

A working combination of an apoenzyme and a coenzyme is termed as:

The enzyme, which combines with non protein part to from a functional enzyme known as:

Which is true?

The protein portion of the conjugated enzyme is called:

A nonprotein prosthetic group is attached :

The enzyme, which combines with nonprotein part to form a functional enzyme, is:

Cofactors which do not take part in enzymatic reactions are:

The major role of minor elements inside living organisms is to act as:

The nonprotein part of an enzyme is:

A nonoprotein organic part attached firmly by a covalent linkage to the apoenzyme is called:

An organic substance bound to an enzyme and essential for its activity is called:

A coenzyme is:

A coenzyme is:

Which statement regarding coenzyme is incorrect?

Coenzymes FMN and FAD are derived from vitamin: