N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Botany, Part-I
PAPER-VII
(Cell Biology)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. Describe the ultra structure of Chloroplast. Briefly explain its function.
2. Describe fluid mosaic model to explain ultra-structure of biological membrane. Why this
model is universally accepted
3. What is cell division Describe different stages of mitosis with suitable sketches.
4. What are carcinogens Describe the causes of cancer.
5. Write short notes on any Two of the following
Chargaff's rule
Z-DNA
Polytene chromosome
Apoptosis
6. Describe the Ultrastructure of Mitochondria. Also mention its function.
7. Write short notes on any Two of the following
Nucleosome
Lampbrush chromosome
t RNA
r RNA
8. Write short notes on any Two of the following
Transcription
Histone proteins
Experiment of Messelson and Stahl
Hormone therapy
9. Explain origin and function of Golgi bodies.
10. Write short notes on any Two of the following
Biochemical theory of origin of life
Chemotherapy
Oxysome
Peroxisome