Download PTU B.Sc-BT 2020 March 4th Sem 47048 Molecular Biology Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) B.Sc. in Biotechnology 2020 March Previous Question Papers

1 | M-47048 (S2)-1695
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(BT) (2014 to 2017) (Sem.?4)
MOLECULAR BIOLOGY
Subject Code : BSBT-204
M.Code : 47048
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Answer briefly :
a. Give the nucleosome structure.
b. Discuss Okazaki fragments.
c. What is induced mutation?
d. What is photoreactivation?
e. What is central dogma reverse?
f. What is TATA box and its significance?
g. Explain Types of DNA polymerases in prokaryotes?
h. What is replicative transposition?
i. Define Operon.
j. What are cis-acting and trans-acting regulators?
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1 | M-47048 (S2)-1695
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(BT) (2014 to 2017) (Sem.?4)
MOLECULAR BIOLOGY
Subject Code : BSBT-204
M.Code : 47048
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Answer briefly :
a. Give the nucleosome structure.
b. Discuss Okazaki fragments.
c. What is induced mutation?
d. What is photoreactivation?
e. What is central dogma reverse?
f. What is TATA box and its significance?
g. Explain Types of DNA polymerases in prokaryotes?
h. What is replicative transposition?
i. Define Operon.
j. What are cis-acting and trans-acting regulators?
2 | M-47048 (S2)-1695
SECTION-B
2. What do you understand by semiconservative replication of DNA? Describe the
experiment which proved that DNA replication is semiconservative.
3. Give the nature and properties of genetic code.
4. Discuss the proteins and enzymes involved in replication process of Prokaryotes.
5. Discuss the role of ribosome in translation.
6. Discuss the various regulatory genes involved in gene expression.

SECTION-C
7. Describe the physical and chemical mutagens that can damage DNA.
8. Explain prokaryotic gene expression in relation to Lac operon.
9. Describe in detail the sequence of events of translation in prokaryote.










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