NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: BIO305
COURSE TITLE: MOLECULAR BIOLOGY
TIME ALLOWED: 2HOURS
INSTRUCTION: ANSWER ANY FOUR QUESTIONS
1a.What is molecular biology.
ii. Outline the relationship of molecular biology to other biological sciences.
bi. List the major components of a nucleotide.
ii. Describe how hormones control gene-expression.
2a. Enumerate the importance of genes in heredity.
ii. Ecsherichia coli is useful in molecular biology, discuss.
bi. What do you understand by the term gene-expression.
ii. Outline the characteristics of genetic code.
3ai. What is catabolism?
ii. List the important features of glycolysis.
b. Describe in detail any two methods for determining DNA sequences.
4ai. Define DNA.
ii. Write a short note on each of the following:
(i) m RNA (ii) t RNA (iii) r RNA
bi. What are the roles of DNA and RNA?
ii. Describe the central dogma.
5ai.What is nucleic acid hybridsation?
ii. Write short notes on the following: (i) a cistron (ii) muton (iii) recon
bi. List the stages involved in the breakdown of glucose.
ii. Describe the process of oxidative phosphorylation
6ai.Describe the various steps involved in the process of chain elongation stage during protein synthesis..
ii. What is DNA sequencing?
bi. What do you understand by the term chromosomes?
ii. Ecsherichia coli are useful in molecular biology. Discuss.
For the 2015 – till date past questions for this course CLICK HERE
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