Biomolecules · Biology · NEET

Which of the following is a nucleotide?

Ligases is a class of enzymes responsible for catalysing the linking together of two compounds. Which of the following bonds is not catalysed by it?...

Which of the following are not fatty acids? A. Glutamic acid B. Arachidonic acid C. Palmitic acid D. Lecithin E. Aspartic acid Choose the correct answ...

Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction?

Enzymes that catalyse the removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds, are known as :

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Lecithin, a small molecular weight organic compound found in living tissues, is an example of:

The cofactor of the enzyme carboxypeptidase is:

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

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Regarding catalytic cycle of an enzyme action, select the correct sequential steps : A. Substrate enzyme complex formation. B. Free enzyme ready to bi...

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Inulin is a polymer of :

Which of the following is not a secondary metabolite?

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Cellulose does not form blue colour with Iodine because

Given below are two statements: Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right...

Given below are two statements : Statement I : Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys...

When a carrier protein facilitates the movement of two molecules across the membrane in same direction, it is called

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Primary proteins are also called as polypeptides because :

Which of the following pair represents free living nitrogen fixing aerobic bacteria?

Choose the incorrect enzymatic rection:

If DNA contained sulfur instead of phosphorus and proteins contained phosphorus instead of sulfur, what would have been the outcome of Hershey and Cha...

Given below are two statements: Statement I : Amino acids have a property of ionizable nature of $$-$$NH2 and $$-$$COOH groups, hence have different s...

In the enzyme which catalyses the breakdown of: H2O2 $$\to$$ H2O + O2 the prosthetic group is :...

Read the following statements on lipids and find out correct set of statements : (a) Lecithin found in the plasma membrane is a glycolipid (b) Saturat...

A dehydration reaction links two glucose molecules to product maltose. If the formula for glucose is C6H12O6 then what is the formula for maltose?...

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Which of the following are not secondary metabolites in plants?

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Following are the statements with reference to 'lipids'.(1) Lipids having only single bonds are called unsaturated fatty acids(2) Lecithin is a phosph...

Identify the substances having glycosidic bond and peptide bond, respectively in their structure

Which one of the following is the most abundant protein in the animals?

Match the following (a) Inhibitor of catalytic activity (i) Ricin (b) Possess peptide bonds (ii) Malonate (c) C...

Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.

Identify the basic amino acid from the following

Consider the following statements : (A) Coenzyme of metal ion that is tightly bound to enzyme protein is called prosthetic group. (B) A complete catal...

Concanavalin A is :

The two functional groups characteristic of sugars are

Which of the following are not polymeric?

Which of the following statements is correct with reference to enzymes?

Which of the following is the least likely to be involved in stablishing the three-dimensional folding of most proteins?

Which of the following describes the given graph correctly? ...

A non-proteinaceous enzyme is

A typical fat molecule is made up of

Which one of the following statements is wrong?

The chitinous exoskeleton of arthropods is formed by the polymerisation of

Which of the following biomolecules does have a phosphodiester bond?

Which one of the following statements is incorrect?

Which one of the following is a non - reducing carbohydrate?

Select the option which is not correct with respect to enzyme action.

The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A - D. Which one of the following options is correct? ...

Which of the following statements about enzymes is wrong?

Uridine, present only in RNA is a

Macromolecule chitin is

A phosphoglyceride is always made up of

Transition state structure of the substrate formed during an enzymatic reaction is

The essential chemical components of many coenzymes are

Which one of the following biomolecules is correctly characterized?

Which one of the following is wrong statement?

The given diagrammatic representation shows one of the caregories of small molecular weight organic compounds in the living tissues. Identify the cate...

Which one is the most abundant protein in the animal world?

Which one out of A - D given below correctly represents the structural formula of the basic amino acid? ...

The curve given below shows enzymatic activity in relation to three conditions (pH, temperature and substrate concentration). What do the two axes (x...

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function? ...

Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?

The figure given below shows the conversion of a substate into product by an enzyme. In which one of the four options (a-d) the components of reaction...

Modern detergents contain enzyme preparations of

A competitive inhibitor of succinic dehydrogenase is

Cellulose is the major component of cell walls of

Carbohydrates are commonly found as starch in plants storage organs. Which of the following five properties of starch (1 $$-$$ 5) make it useful as a ...

About 98 percent of the mas of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and

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

Carbohydrates, the most abundant biomolescule on earth, are produced by

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

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

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

Which of the following is the simplest amino acid?

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

Which one of the following enzymes, is copper necessarily associated as an activator?

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

Which of the following is a reducing sugar?

Lipids are insoluble in water because lipid molecules are

Enzyme first used for nitrogen fixation

Which of the following have carbohydrate as prosthetic group?

ATP is

Which factor is responsible for inhibition of enzymatic process during feedback?

Enzymes are not found in

Role of enzyme in reactions is to/as