Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3130406 Cell Biology Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3130406 Date: 30/11/2019
Subject Name: Cell Biology
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Marks
Q.1 (a) What are Plasmodesmata and what are their functions? 03
(b) Explain the fluid mosaic model with a diagram 04
(c) Differentiate between the Nucleoid and the Nucleus, and write a
short note on Plasmids
07
Q.2 (a) What are the functions of the cytoskeleton. 03
(b) Enlist all prokaryotic vesicles and explain the function of gas
vesicles.
04
(c) Compare the role of eicosanoids and steroid/lipid signal
molecules.
07
OR
(c) Compare the cell wall structure of gram positive and gram
negative cell walls
07
Q.3 (a) Mitochondria are responsible for generation of energy in the
eukaryotic cell. Which organelle is responsible for energy
generation in prokaryotes similarly.
03
(b) Write notes on Chemotaxis and Phototaxis 04
(c) Explain the secretory pathway for proteins with resepect to the
roles of endoplasmic reticulum and golgi complex.
07
OR
Q.3 (a) How does the JAK/STAT pathway regulate cell functions. 03
(b) Explain how RAS protein malfunction leads to cancer. 04
(c) What are non receptor tyrosine kinases explain with the example
of cytokine receptors.
07
Q.4 (a) Draw a labeled diagrams of eukarytoic cell cycle phases and
events of M phase.
03
(b) You have a mixed population of cells and through a Fluorescent
assisted cell sorter, you find out that 47% of the cells have double
the DNA of the rest of the cells. What percentage of cells are in
G1 phase? Justify your answer in a single paragraph.
04
(c) Explain the process of lysosome maturation 07
OR
Q.4 (a) Define apoptosis and Gap junctions 03
(b) Write a note on Chloroplasts and evaluate which of the
prokaryotic organelles is responsible for the function of
chloroplasts
04
(c) Ellaborate on different modes of cell signalling with example of
signal molecules.
07
Q.5 (a) What do you understand by the term akaryotic? give two
examples of the same.
03
(b) Explain G-protein coupled receptors with diagram. 04
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3130406 Date: 30/11/2019
Subject Name: Cell Biology
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Marks
Q.1 (a) What are Plasmodesmata and what are their functions? 03
(b) Explain the fluid mosaic model with a diagram 04
(c) Differentiate between the Nucleoid and the Nucleus, and write a
short note on Plasmids
07
Q.2 (a) What are the functions of the cytoskeleton. 03
(b) Enlist all prokaryotic vesicles and explain the function of gas
vesicles.
04
(c) Compare the role of eicosanoids and steroid/lipid signal
molecules.
07
OR
(c) Compare the cell wall structure of gram positive and gram
negative cell walls
07
Q.3 (a) Mitochondria are responsible for generation of energy in the
eukaryotic cell. Which organelle is responsible for energy
generation in prokaryotes similarly.
03
(b) Write notes on Chemotaxis and Phototaxis 04
(c) Explain the secretory pathway for proteins with resepect to the
roles of endoplasmic reticulum and golgi complex.
07
OR
Q.3 (a) How does the JAK/STAT pathway regulate cell functions. 03
(b) Explain how RAS protein malfunction leads to cancer. 04
(c) What are non receptor tyrosine kinases explain with the example
of cytokine receptors.
07
Q.4 (a) Draw a labeled diagrams of eukarytoic cell cycle phases and
events of M phase.
03
(b) You have a mixed population of cells and through a Fluorescent
assisted cell sorter, you find out that 47% of the cells have double
the DNA of the rest of the cells. What percentage of cells are in
G1 phase? Justify your answer in a single paragraph.
04
(c) Explain the process of lysosome maturation 07
OR
Q.4 (a) Define apoptosis and Gap junctions 03
(b) Write a note on Chloroplasts and evaluate which of the
prokaryotic organelles is responsible for the function of
chloroplasts
04
(c) Ellaborate on different modes of cell signalling with example of
signal molecules.
07
Q.5 (a) What do you understand by the term akaryotic? give two
examples of the same.
03
(b) Explain G-protein coupled receptors with diagram. 04
2
(c) Explain the heirarchy of life from the basic unit of life to the
whole biosphere.
07
OR
Q.5 (a) What are stem cells? How is Nitro glycerine used for immediate
treatment of heart attack?
03
(b) Evalute and explain what would happen with respect to cell
division if there is DNA break during the G1, S, or G2 phase.
04
(c) Write a note on the apoptotic caspases and evaluate the effect of
a defective P53 gene on the cell
07
*******
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This post was last modified on 20 February 2020