Match the following (a) Inhibitor of catalytic activity (i) Ricin (b) Possess peptide bonds (ii) Malonate (c) Cell wall material in fungi (iii) Chitin (d) Secondary metabolite (iv) Collagen Choose the correct option from the following

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

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

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

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

HARD

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Which of the following is not a derivative of cholesterol?

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Important Questions on Chemical Constituents of Living Cell

EASY

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

Optical activity of DNA is due to its:

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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

EASY

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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

HARD

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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 Function>Chemical Constituents of Living Cell>Lipids

Which one of the following statements is wrong?

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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

EASY

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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 Function>Chemical Constituents of Living Cell>Lipids

Concanavalin A is:

EASY

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

The Fischer presentation of D-glucose is given below

Question Image

The correct structure(s) of

β - L -

glucopyranose is(are)

HARD

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

Following are the statements with reference to 'lipids'.
(a) Lipids having only single bonds are called unsaturated fatty acids.
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has $20$ carbon atoms including carboxyl carbon.
(e) Arachidonic acid has $16$ carbon atoms.

Choose the correct answer from the options given below.

HARD

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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?

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

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:

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

Which of the following is not polymeric?

MEDIUM

Biology>Cell Structure and Function>Chemical Constituents of Living Cell>Lipids

Match the following

(a)	Inhibitor of catalytic activity	(i)	Ricin
(b)	Possess peptide bonds	(ii)	Malonate
(c)	Cell wall material in fungi	(iii)	Chitin
(d)	Secondary metabolite	(iv)	Collagen