Biomolecules

BIOMOLECULES 1

These MCQs are intended for checking your Biology Chapter BIOMOLECULES​,  knowledge.

What will happen to an enzyme when apoenzyme is
separated from its metal component?

Which type of bond present in deoxyribose adenosine
diphosphate and phosphate in nucleotide-

Which type of bond present in deoxyribose adenosine
monophosphate and phosphate in nucleotide-

Diameter of B-type DNA is -

Number of nucleotide present in linear DNA having 50
phosphodiester bond-

Hypoxanthine obtained from deamination from-

Which of the following have phosphodiester bond

Three DNA P ,Q and R have 20 percent A , 20 percent G and
30 percent G respectively if all three have length 340nm than
which is denature at highest temperature

The minerals responsible for the maintenance of fluid
balance in the body are :

For .Ribose sugar have all correct except -

Which of the following statements is incorrect regarding
enzymatic activity?

Dry seeds can endure higher temperature than the
germinating seeds because

In any linear DNA if 55 A and 35 G present than number of
H-bond present is-

Which elements provide rigidity to teeth & bones?

Which type of bond present in deoxyribose adenosine and
phosphate in nucleotide-

Type of bond absent in ATP is -

Energy released from enzyme-substrate interaction is

Purine ring have nitrogen at position -

Iron storing protein found in animal tissues is

In an experiment to study fermentation by yeast,
temperature was increased from 20°C to 30°C, rate of
enzyme catalysed reaction increases by

Which of these is not a trace element in plants?

Which type of bond present in ribose sugar and purine in
nucleoside-

Enzymatic activity of salivary amylase stops on reaching
stomach due to change in

Feedback inhibition of enzyme is influenced by

Cyanide is a metabolic poison as it :

In a 100 base pair linear DNA number of phosphodiester
bond and glycosidic bond is respectively

Which vitamin forms coenzymes FAD and FMN.

Which of the following present in DNA

Lysozyme occurs in

Niacin is precursor of coenxyme :

Maximum concentration of enzymes (69-70%) in a cell
occur in

which is uncommon between sugar of ribose and deoxyribose

Which of the following is having phosphoester bond

Which of the following is a purine

Specificity of a digestive enzyme depends on its

xanthine obtained from deamination from-

Deamination of cytosine give .............. Base

Which of the nitrogenous base have name 5-methyl uracil-

Which of the following can have ribose sugar and
phosphoester bond -

Which type of bond present in ribose sugar and pyrimidine in
nucleoside-

Zymogens are

Which of the following type of DNA is left handed coil

Which of the following is not nucleoside

Which of the following statement is not true for allosteric
inhibition?

Action of bacterial antibiotics sulpha drugs is due to

Which of the following position in sugar have OH group in
both ribose and deoxyribose-

which of the following have negative charge

Type of linkage present in a polynucleotide chain is -

At temperature near freezing point, the enzymes are

Accumulation of glucose 6-PO4
inhibits the activity of
gluco hexokinase. This is an example of

Mark the correctly matched -

Presence of competitive inhibitor

A plasmid DNA having 300 phosphodiester bond per strand
have -

Which of the following is nucleotide -

Which is most harmful for an enzyme?

Uric acid is derivative of -

IN a polynucleotide chain with 10 nucleotide which is
correct-

Which of the following can be monomer which join to form
polynucleotide chain as monomer -

Which is incorrect about DNA

Which type of bond present in ribose sugar and cytosine in
nucleoside-

6-amino purine is another name for -

Higher value of Km constant for an enzyme indicates

In a 680 nm DNA if 20 percent is Adenine than number of
guanine is

Coenzyme is

Which type of bond present in deoxyribose sugar and adenine
in nucleoside-

Phosphoric acid link with AMP by ............. Bond

Niacin is precursor of coenxyme :

Which enzyme/s do not follow km constant?

Glycosidic linkage absent in -

Which of the following have phosphodiester bond

In a 200 base pair DNA if 25 percent in A than number of
hydrogen bond is -

which is correct about ribose sugar

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BIOMOLECULES 2

These MCQs are intended for checking your Biology Chapter BIOMOLECULES​,  knowledge.

Anomeric carbon in fructose is

Which of the following is monomer of cellulose?

Cellulose the most important constituent of plant cell is
made up of :

The primary structure of a protein is due to

Which of the following is a chromoprotein?

Which of the following sequence is correct on the basis of
increasing molecular weight?

In globular protein which amino acid probably found
inside of protein-

Most abundant protein on earth in plants are-

Which of the following is not mucopolysaccharide

Microtubule are rich in ………… amino acid-

Match Column -1 with Column - II and select the correct
option from the codes given below.
Column -1                 Column - II
A. Tetrose sugar      (i) Galactose
B. Pentose sugar     (ii) Maltose
C. Hexose sugar      (iii)Erythrose
D. Disaccharide       (iv) Ribose
(v) Sedoheptulose

Which is correct about enzyme –

which of the following is not homopolymer-

fructose is present in-

β-D glucose is monomer of –

Which of the following is only a ribose nucleotide?

Which type of bond present in diasaccharide-

Agar- Agar is polymer of –

Which of the following have heterocyclic ring-

Which of the following is absent in nucleotide-

Nucleic acid was discovered as nuclein by :

Which of the following are product of sucrose hydroysis-

Adult human haemolgobin consists of

Which type of bond present in nucleic acid-

Which of the following should be present in acid soluble pool
but should be present in acid insoluble pool-

Which of the following is nucleotide?

What is common in all of them i.e. NAD, FAD, NADP,
ATP

The enormous diversity of protein molecules is mainly due
to diversity of

Essential amino acids include

B-DNA turn……….. in double helical structure-

A form of amino acid with both positive and negative
charges simultaneously in the same molecule is

Sweetest sugar is –

The maximum formation of mRNA occurs in :

which of the following is not polymer of α-D glucose-

which of the following is present in least amount in cell-
(from table)

Which type of bond Absent in secondary structure of
protein-

Nitrogenous base ‘Choline’ is present with

Which of the following is strongest bond in the native
tertiary structure of globular protein?

The amino acid with lowest molecular weight is :

Number of nitrogen bases in a single strand of B-DNA
with 100 turns is

At isolectric pH of Glycine Which is not true

Chargaff, in his experiments on the chemistry of DNA
estimated the base composition of human DNA and found
Adenine constitute 31% and Guanine 19%. The quantity of
cytosine in the DNA of a human somatic cell is likely to be

which of the following is heterocyclic ring-

α(1-4) linkage present in –

Mark the correct-

What will the formula of a polysaccharide formed by the
condensation of 60 ribose sugar units.

Which amino acid not contain OH group in side chain-

Most abundant protein in human body is

Which of the following is an amino acid contains sulphur ?

On hydrolysis a nucleoside would not yield

Which of the following is a trisaccharide?

Which of the following is not correctly matched for amount
of macromolecule in cell –

α-D glucose is not present in-

Which of the following amino acid give pyruvate on
deamination-

Most abundant protein on earth in animals are-

Hydroxylation of phenylalanine give …… amino acid-

For lactose which is true-

which of the following is not heteropolymer-

The major part of dry weight of plant is made of

Which of the following is polar amino acid-

which of the following is pentose-

Which bond present between tertiary structure of protein-

Which of the following is an amino acid contains sulphur ?

t-RNA is also known as?

Which of the following is heterocyclic ring-

which of the following is not homopolymer-

Which of the following is not present in acid soluble pool-

Which of the following originates from the tyrosine

Study the given statements and select the correct answer.
(i) Cellulose is a homopolymer of glucose.
(ii) Inulin is a homopolymer of fructose.
(iii)Starch gives blue colour and glycogen gives red colour
with iodine solution.
(iv) Cellulose gives no colour with iodine solution.

Hydrolysis of sucrose yields :

which of the following is polymer of β-D glucose-

Which type of bond present in Polysaccharide

Which of the following is optically inactive -

Protein having both structural and enzymatic traits is

which of the following have helical structure-

What is Number of peptide bond in a protein with two
subunits each having 30 amino acid -

The cholesterol molecule is :

RNA responsible for directing proper sequence of amino
acids in protein synthesis is :

Nicotinamide can be synthesised in human body from

which of the following have secondary structure-

The polysaccharides made up of glucose monomers are

Examples of aromatic amino acids are:

What is true about glycogen?

Which type of bond present in Carbohydrate -

Glycoproteins are known to play an important role in cell
recognition. The specificity of this recognition is provided
largely by

One of these is not an amino acid :

A fatty acid not synthesized in man is:

Which of the following polysaccharides is not a polymer of
glucose?

The amino acid which gives rise to thyroxine is :

What is Number of peptide bond in a protein with two
subunits each having 30 amino acid -

Cytochromes are

Which of the following is not present in acid insoluble pool-

Ketone bodies are by products of metabolism of :

B-DNA which is right-handed double helix contains __
base pairs per turn of the helix and each turn is __ long,

The type of RNA that characteristically contains
methylated purines and pyrimidines is :

which of the following is aldose-

A unit composed of sugar and nitrogen base linked by
glycosidic bond is

Amino acid tryptophan gives rise to

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