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PROTEINS AND PROTEIN METABOLISM- Part 7
See all quizzes of PROTEINS AND PROTEIN METABOLISM- Part 7 here:
1 Edman’s reaction can be used to
(A) Determine the number of tyrosine residues in
a protein
(B) Determine the number of aromatic amino acid
residues in a protein
(C) Determine the amino acid sequence of a
protein
(D) Hydrolyse the peptide bonds in a protein
2. Inherited deficiency of β−glucosidase causes
(A) Tay-Sachs disease
(B) Metachromatic leukodystrophy
(C) Gaucher’s disease
(D) Multiple sclerosis
3. Tay-Sachs disease results from inherited
deficiency of
(A) Arylsulphatase A
(B) Hexosaminidase A
(C) Sphingomyelinase
(D) Ceramidase
4. The largest alpolipoprotein is
(A) Apo E (B) Apo B-48
(C) Apo B-100 (D) Apo A-I
5. Apolipoprotein B-100 is synthesised in
(A) Adipose tissue (B) Liver
(C) Intestine (D) Liver and intestine
6. Apolipoprotein B-48 is synthesized in
(A) Adipose tissue (B) Liver
(C) Intestine (D) Liver and intestine
7. Apolipoproteins A-I and A-II are present
in
(A) LDL only
(B) LDL and VLDL
(C) HDL only
(D) HDL and chylomicrons
8. Apolipoprotein B-48 is present in
(A) Chylomicrons (B) VLDL
(C) LDL (D) HDL
9. Apolipoprotein B-100 is present in
(A) Chylomicrons (B) VLDL only
(C) LDL only (D) VLDL and LDL
10. Apolipoproteins C-I, C-II and C-III are
present in
(A) Chylomicrons (B) VLDL
(C) HDL (D) All of these
11. Apolipoprotiens C-I, C-II and C-III are
present in all of the following except
(A) Chylomicrons (B) VLDL
(C) LDL (D) HDL
12. Apolipoprotein A-I acts as
(A) Enzyme activator (B) Ligand for receptor
(C) Both (A) and (B) (D) None of these
13. Apolipoprotien B-100 acts as
(A) Enzyme activator (B) Ligand for receptor
(C) Both (A) and (B) (D) None of these
14. Apolipoprotein C-II is an activator of
(A) Lecithin cholesterola acyl transferase
(B) Phospholipase C
(C) Extrahepatic lipoprotein lipase
(D) Hepatic lipoprotein lipase
15. Nascent chylomicron receives apolipoproteins
C and E from
(A) VLDL remnant (B) VLDL
(C) LDL (D) HDL
16. Terminal transferase
(A) Removes nucleotides from 3’ end
(B) Adds nucleotides at 3’ end
(C) Removes nucleotides from 3’end
(D) Adds nucleotides at 3’end
17. S1 nuclease hydrolyses
(A) DNA of somatic cells
(B) DNA of sperms
(C) Any double stranded DNA
(D) Any single stranded DNA
18. Positive nitrogen balance is seen in
(A) Starvation
(B) Wasting diseases
(C) Growing age
(D) Intestinal malabsorption
19. Alanine can be synthesized from
(A) Glutamate and α-ketoglutarate
(B) Pyruvate and glutamate
(C) Pyruvate and α-ketoglutarate
(D) Asparate and α-ketoglutarate
20. All of the following are required for
synthesis of alanine except
(A) Pyruvate (B) α-ketoglutarate
(C) Glutamate (D) Pyridoxal phosphate
21. All of the following statements about
aspartate are true except
(A) It is non-essential amino acid
(B) It is a dicarboxylic amino acid
(C) It can be synthesized from pyruvate and
glutamate
(D) It can be converted into asparagine
22. Glycine can be synthesized from
(A) Serine (B) Choline
(C) Betaine (D) All of these
23. All of the following are required for
synthesis of glutamine except
(A) Glutamate
(B) Ammonia
(C) Pyridoxal phosphate
(D) ATP
24. A coenzyme required for the synthesis of
glycine from serine is
(A) ATP
(B) Pyridoxal phosphate
(C) Tetrahydrofolate
(D) NAD
25. All of the following statements about
proline are true except
(A) It is an imino acid
(B) It can be synthesized from glutamate
(C) It can be catabolised to glutamate
(D) Free proline can be hydroxylated to
hydroxyproline
26. A protein rich in hydroxyproline is
(A) Prolamin (B) Procollagen
(C) Collagen (D) Proinsulin
27. All the following statement about
hydroxyproline are true except
(A) There is no codon for hydroxyproline
(B) It is present in large amounts in collagen
(C) Free proline cannot be hydroxylated to
hydroxyproline
(D) Hydroxylation of proline residues is catalysed
by a dioxygenase
28. All of the following are required for
hydroxylation of proline residues except
(A) Ascorbic acid (B) Glutamate
(C) Ferrous ions (D) Molecular oxygen
29. Cysteine can be synthesized from
methionine and
(A) Serine (B) Homoserine
(C) Homocysteine (D) Threonine
30. Methionine is synthesized in human body
from
(A) Cysteine and homoserine
(B) Homocysteine and serine
(C) Cysteine and serine
(D) None of these
