Download MBBS (Bachelor of Medicine, Bachelor of Surgery) TMU (Teerthanker Mahaveer University) First Year (1st Year) 2015 MBS103A Biochemistry I Previous Question Paper
MBBS I (First) Professional Examination 2014-15
Course Code: MBS103 Paper ID: 0322208
Biochemistry -I
Time: 2 Hours 40 Minutes
Max Marks: 40
Note: Attempt all questions. Draw proper diagrams to support
your answer.
Part `B'
1.
Discuss the regulatory mechanism for maintenance of
normal blood glucose levels in humans. How are these
disturbed in diabetes mellitus?
(10)
2. a)
Describe the regulation of cholesterol biosynthesis in the
cell and its association with heart diseases. (5)
b)
Define uremia. Explain the steps of urea cycle. (5)
3.
Differentiate between:
a)
Competitive and non competitive inhibition of
enzymes. (6)
b)
Active and passive transport. (2)
c)
Carbamoyl phosphate synthetase I and II (2)
4.
Define oxidative phosphorylation. Describe the various
components of ETC (Election Transport Chain) along with
its inhibitors. (10)
MBBS I (First) Professional Examination 2014-15
Roll No.
Student's Name
Student's Signature
Invigilator's Signature
Course Code:MBS103
Paper ID: 0322208
Biochemistry - I
Part `A'
Time: 20 Minutes
Max Marks: 10
Note: 1. Attempt all questions and return this part of the question paper to the invigilator after 20 Minutes.
2. Please tick () correct one only. Cutting, overwriting or any other marking are not allowed.
3. For answering please use Ball- pen only.
Q.1
Which one of the following are essential
Q.9
Which one of the following is right handed
amino acid:
and chromosomal DNA:
a)
Ala & Asp
a)
A-DNA
b)
Glu & Gln
b)
B-DNA
c)
Phe & Trp
c)
C-DNA
d)
Asn & Tyr
d)
Z-DNA
Q.2
The number of Fe++ atoms present in a
Q.10 Which one of the following is circular and
molecule of hemoglobin is:
supercoiled DNA:
a. 4
b. 3
a)
SS-DNA
c. 2
d.
1
b)
B-DNA
c)
A-DNA
Q.3
The excretory and product of protein
d)
Plasmid -DNA
(amino acid) metabolism in humans is:
a)
Ammonia
P.T.O.
b)
Urea
Q.11 Which one of the following acts as an auto
c)
Uric acid
catalyst in the digestion of protein:
d)
Allantoui
a)
Pepsin
b)
Trypsin
Q.4
585 amino acid long polypeptide will
c)
Chymotrypsin
contain:
d)
Entrokurasi
a)
585 peptide bonds
b)
586 peptide bonds
Q.12 Transaminases are mostly found in:
c)
584 peptide bonds
a)
Heart
d)
1170 peptide bonds
b)
Brain
c)
Liver
Q.5
The urea cycle is linked to TCA cycle via:
d)
Kidney
a)
Succinate
b)
Fumarate
Q.13 Purely ketogenic aminoacid is:
c)
Ornithine
a)
Tyrosine
d)
Argininosuccinate
b)
Phenylalanine
c)
Arginine
d)
Leucine
Q.14 Albinism is due to deficiency of:
Q.6
In biochemical reactions S-adenosyl
a)
Phenylalanine hydroxylase
methionine (SAM) is an active donor of the
b)
Tryphphan hydroxylase
following group:
c)
Tyrosinase
a)
Adenosine
b)
Methyl
d)
Arginase
c)
Sulphur
d) Acetate
Q.15 In which disease homogentisate
Q.7
Albumin is synthesized in:
accumulates in the blood and excreted in
a)
Kidney
urine:
b)
Liver
a)
Phenylketonuria
c)
Skeletal muscles
b)
Alkaptonuria
d)
Bone marrow
c)
Homocystinuria
d)
Ketonuria
Q.8
A nucleoside is composed of:
a)
Nitrogenous base + Sugar
Q.16 The phospholipid lecithin contains which of
b)
Nitrogenous base + Phosphate
the following nitrogenous compound:
c)
Nitrogenous base + Sugar +
a)
Choline
Phosphate
b)
Ethanolamine
d)
Sugar + Phosphate
c)
Serine
d)
Glycine
Q.17 The end product of purine catabolism in
humans is:
a)
Urea
b)
Uric acid
c)
Ammonia
d)
Xanthine
Q.18 The action of glucagon is mediated by:
a)
cAMP
b)
cGMP
c)
IP3
d)
DAG
Q.19 Which one of the following is not an amino
acid derivative hormone:
a)
Thyroxine
b)
Epinephrine
c)
Norepinephrine
d)
Estrogen
Q.20 Which one of the following is a
heteropolysaccharide:
a)
Starch
b)
Glycogen
c)
Hyaluronic acid
d)
Inulin
This post was last modified on 17 February 2022