NEET Daily Practice Papers - Biology - Cellular Enzyme

Who first used the term 'enzyme''?

Who coined the term zymase for enzymes in yeast?

Enzymes are basically or All enzymes contain

'Enzymes are proteins', it was suggested by

Who got the Nobel prize working on enzymes in the year 1978?

Name the scientist who for the first time isolated and purified the enzyme urease in crystalline form from Jack bean (Canavalia ensiformis).

Which of the following is called 'biological middle man''?

Who demonstrated that alcoholic fermentation was an enzymatic process?

Enzymes were discovered for the first time in

Who discovered 'co-enzymes'?

Which one of the following statements is true for the enzymes?

Enzyme are best defined as

In plants, enzymes are present

Biological catalysts are called

Enzymes are the polymers of

Which of the following statements is not correct?

cAMP mediated 'Cascade model' of enzyme regulation was proposed by

Synthesis of enzymes take place by

Enzymes are absent in

Which one of the following enzyme is not composed of simple proteins?

Enzymes are useful to plants because

Which of the following is not an attribute of enzymes

What is correct about enzymes

Enzymes are different from inorganic catalysts

The enzyme used for alcohol formation by fermentation is

Of the total enzymes present in the cell approximately how many occur in mitochondrion

An average living cell contains about

The catalytic efficiency of two different enzymes can be compared by the

Which of the following is not a part of enzyme but it activates the enzyme

Huge amount of starch is deposited in potato tubers due to

Which one of the following is an enzyme

An enzyme can be synthesized by chemically bonding together molecules of

A dialysable non-protein organic substance which combines with apoenzyme to make a functional enzyme is

Most enzymes consist of two parts; these are

The protein part of enzyme is known as

Enzyme complex is called

When coenzyme is combined with apoenzyme, it is called

Non-protein part of an enzyme is known as

The enzyme, which combines with non-protein part to form a functional enzyme known as

Cofactor (prosthetic group) is a part of holoenzyme. It is

Organic compounds having transient association with apoenzyme are called

Which of the following coenzyme is a derivative of pantothenic acid (Vitamin B complex)

Co-enzyme is

Coenzyme can function

Which of the following is iron porphyrin coenzyme or cofactor

Substances which enhance reactions after combining with enzymes are called

FAD or FMN is a coenzyme. Which vitamin is incorporated into its structure

NADP is

Which of the following is not a co-enzyme

Which of the following is a loosely bound coenzyme

Which one of the following is a coenzyme

Which mineral element is essential for the activity of aconitase enzyme

Which one of the following metallic ion does not occur as prosthetic group in any enzyme

Which mineral element is essential for the activity of enolase enzyme

The prosthetic group (metallic cofactor) of various respiratory enzymes is

Cytochrome oxidase enzyme contains

Which of the following element inhibits the activity of sulphydryl enzyme

Which one of the following enzyme contains Mn metallic ion as the prosthetic group

Which one of the following enzyme contains Mo as prosthetic group

In which one of the following enzymes, is copper necessarily associated as an activator

Which one of the following statements regarding enzyme inhibition is correct?

Telomerase is an enzyme which is a

Which is not true for enzymes?

Many of the hydrolytic reactions are

DNA polymerase enzyme is responsible for the synthesis of

Enzymes as they exist inside the cell are

Which one value is required for better enzymatic action

The cause of specificity of an enzyme is

An enzyme acts by

To explain the mechanism of enzymatic action, who proposed "Lock and key hypothesis"

Who proposed the principal of "Induced fit"

Km is related to

Template theory of enzyme action is supported by

Jacob and Monad named those enzymes allosteric whose activity is regulated by

When an enzyme induced product inhibits enzymatic activity, inhibition is called

Number of active sites in allosteric enzyme is

Enzyme inhibition caused by a substrate analogue is

Inhibitory effect of melonic acid on succinic dehydrogenase enzyme is

Competitive inhibitors (like malonate) alter

Enzyme can be made functionless by

Metabolic poisons which alter the structure of an apoenzyme are

Non-competitive inhibitors alter

During glycolysis enzyme hexokinase changes glucose to glucose–6–phosphate. Glucose–6–phosphate is inhibited by

Decline in the activity of the enzyme hexokinase by glucose 6-phosphate is caused by

Enzymes capable of changing their form are called

Lactose operon is considered to be glucose sensitive due to

Which of the following enzyme can form RNA from DNA

The permeases are

Which enzyme shows greatest substrate specificity

Term – ase is used for

Systematic approach of naming enzymes has been recommended by the Commission on Enzymes of the

Basically how many types of enzymes have been recognised by International Union of Biochemistry

In the modern system of nomenclature which one of the following enzyme occupies 1st position

The plant proteinases or endopeptidases enzyme is

Nitrate reductase enzyme is responsible for the formation of

The first enzyme that reduces nitrates into nitrites and ammonia in plants is

The enzyme responsible for atmospheric nitrogen fixation is

At the time of cotton seeds germination, the stored food is digested by

Fat is hydrolysed by enzyme lipase to yield

Substrate of amylase enzyme is

Which enzyme is not composed of simple proteins?

Enzymes are useful to plants because

Which of the following is not an attribute of enzymes?

What is correct about enzymes?

Enzymes are different from inorganic catalysts

The enzyme used for alcohol formation by fermentation is

Of the total enzymes present in the cell approximately how many occur in mitochondrion?

An average living cell contains about

The catalytic efficiency of two different enzymes can be compared by the

Which of the following is not a part of enzyme but it activates the enzyme?

Huge amount of starch is deposited in potato tubers due to

Which one of the following is an enzyme?

An enzyme can be synthesised by chemically bonding together molecules of

A dialysable non-protein organic substance which combines with apoenzyme to make a functional enzyme is

Most enzymes consist of two parts; these are

The protein part of enzyme is known as

Enzyme complex is called

When coenzyme is combined with apoenzyme, it is called

Non-protein part of an enzyme is known as

The enzyme, which combines with non-protein part to form a functional enzyme known as

The enzyme which converts glucose into ethyl alcohol is

Which of the following enzyme digests other enzymes?

The enzyme which catalyzes the photosynthetic C4 cycle is

The nucleic acids are broken into nucleotides by………...... enzymes

At boiling temperature an enzyme is

As temperature changes from 3°C to 45°C, the rate of enzyme activity will

In most plant cells most enzymes have their optimum activity at

At temperature just below the freezing point, the enzyme

Which ions are toxic in enzymatic activity?

Enzymes are destroyed

Dry seeds can endure higher temperature than the germinating seeds because

In seeds, digestion is made possible at relatively low temperature by

Zymogens are

Enzymes which are slightly different in molecular structure but can perform identical activity are called

Enzyme having different molecular arrangement but similar functions is

Lactic dehydrogenase (LDH) which catalyzes pyruvate to lactate is an example of

Which one statement regarding isoenzyme is correct?

The non-protein enzyme is

Enzymes are sensitive to

Enzymes are sensitive to

Enzyme which hydrolyses starch to maltose is

Which one is not an example for hydrolases?

Which enzyme digests the stored food material of castor seeds?

In the cell digestive enzymes are mostly in

Enzyme concerned with transfer of electrons are

Which one of the following belongs to transferase group?

Esterase enzyme belongs to which of the following class?

Fumerase enzyme belongs to which class?

Enzyme phosphoglucomutase belongs to

Which one belongs to hydrolase group?