Match List - I with List- II. Column-I Column-II (a) Protein (i) C = C double bonds (b) Unsaturated fatty acid (ii) Phosphodiester bonds (c) Nucleic acid (iii) Glycosidic bonds (d) Polysaccharide (iv) Peptide bonds Choose the correct answer from options given below.

( a ) - ( iv ) ; ( b ) - ( i ) ; ( c ) - ( ii ) ; ( d ) - ( iii )

( a ) - ( i ) ; ( b ) - ( iv ) ; ( c ) - ( iii ) ; ( d ) - ( ii )

( a ) - ( ii ) ; ( b ) - ( i ) ; ( c ) - ( iv ) ; ( d ) - ( iii )

( a ) - ( iv ) ; ( b ) - ( iii ) ; ( c ) - ( i ) ; ( d ) - ( ii )

EASY

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Palmitic and arachidonic acid have how many carbons excluding the carboxyl carbon?

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Important Questions on Biomolecules

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

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

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

The Fischer presentation of D-glucose is given below

Question Image

The correct structure(s) of

β - L -

glucopyranose is(are)

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Choose the CORRECT combination of statements given below related to cysteine residue in proteins.

i. Cysteine can be linked to tyrosine by S-O bond.

ii. Cysteine can be linked to another cysteine by S-S bond.

iii. Cysteine can complex with

{Z n}^{2 +} .

iv. Cysteine can be linked to methionine by S-S bond

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

25000 Da

protein contains a single binding site for a molecule (ligand), whose molecular weight is

2500 Da

. Assuming high affinity and physiologically irreversible binding the amount of the ligand required to occupy all the binding sites in

10 mg

protein will be:

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Which one of the following is NOT an unsaturated fatty acid?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Optical activity of DNA is due to its:

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

How many different proteins consisting of 100 amino acids can be formed from 20 different amino acids?

HARD

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Which one of the following techniques is used for the detection of proteins?

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Match List - I with List- II.

Column-I		Column-II
(a)	Protein	(i)	$C = C$ double bonds
(b)	Unsaturated fatty acid	(ii)	Phosphodiester bonds
(c)	Nucleic acid	(iii)	Glycosidic bonds
(d)	Polysaccharide	(iv)	Peptide bonds

Choose the correct answer from options given below.

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Which one of the following statements is wrong?

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Which of the following amino acids is NOT involved in gluconeogenesis?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

A typical fat molecule is made up of

HARD

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

The activity of a certain protein is dependent on its phosphorylation. A mutation in its gene changed a single amino acid which affected the function of the molecule. Which amino acid change is most likely to account for this observation?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Which one of the following pairs of molecules never forms a hydrogen bond between them?

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Phospholipids are formed by the esterification of:

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Concanavalin A is:

HARD

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Two tubes labelled 'P' and 'Q' contain foodstuff. Tube 'P' gave a positive test with Benedict's solution while tube 'Q' gave a positive test with nitric acid. Which of the following is correct?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

In a protein molecule various amino acids are linked together by:

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Which of the following is not polymeric?

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Biomacromolecules

Read the following statements on lipids and find out the correct set of statements:

(a) Lecithin found in the plasma membrane is a glycolipid.

(b) Saturated fatty acids possess one or more $C = C$ bonds.

(d) Lipids are generally insoluble in water but soluble in some organic solvents.