cellbiology - supply- jntu old question papers

Code No: 33111 Set No. 1
II B.Tech I Semester Supplimentary Examinations, May/Jun 2009
CELL BIOLOGY
(Bio-Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
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1. Describe the structure of a generalized prokaryotic cell. Indicate the ways in which
a prokaryotic cell would differ in structure from the generalized eukaryotic cell. [16]
2. What are microtubules structurally and functionally? [16]
3. What are cell organelles? Why are mitochondria important for the functioning of
eukaryotic cells? [16]
4. What are Lysosomal & Vacuolar membrane pumps? [16]
5. During which phase of mitosis do the nucleolus and the nuclear membrane break
down and disappear? Describe the roles that the spindle fibers play in mitosis.
[16]
6. Q14. Write short notes on:
(a) Pattern of stem cell division
(b) Different types of stem cells. [8+8]
7. How are receptors involved in cellular regulation? [16]
8. Citing a suitable example, explain the role of cAMP as secondary messenger in
hormone action. [16]
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Code No: 33111 Set No. 2
II B.Tech I Semester Supplimentary Examinations, May/Jun 2009
CELL BIOLOGY
(Bio-Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
⋆ ⋆ ⋆ ⋆ ⋆
1. Compare and contrast the properties and strategies of eukaryotic and prokaryotic
cells in terms of cell size, compartmentalization, nuclei, internal membranes, DNA
and cell specialization. [16]
2. Discuss the major components of plasma membrane. [16]
3. Discuss each of the following:
(a) the structure and role of the cell membrane
(b) the structure and role of mitochondria. [16]
4. What is the difference between simple diffusion and Fasciliated diffusion? [16]
5. Give an overview of the major events taking place in a typical eukaryotic cell cycle.
[16]
6. With respect to cell differentiation write notes on:
(a) Cytoplasmic determinants
(b) Nucleoplasmic interactions. [8+8]
7. Briefly explain the different classes of cell surface receptors. [16]
8. Using a suitable example discuss the role of secondary messengers in signal trans-
duction. [16]
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Code No: 33111 Set No. 3
II B.Tech I Semester Supplimentary Examinations, May/Jun 2009
CELL BIOLOGY
(Bio-Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
⋆ ⋆ ⋆ ⋆ ⋆
1. How can you determine whether a unicellular organism is a prokaryote or a eukary-
ote? Justify your statement with suitable illustrations. [16]
2. Discuss the importance of Carbon in a living cell. [16]
3. Cite the one unique function of each of the following: plasma membrane, nucleus,
nuclear envelope, mitochondrion, chloroplast, RER, SER, Golgi complex, secretory
vesicles, lysosome, peroxisomes, ribosomes, cytoskeleton, microtubules, microfila-
ments, intermediate filaments, extracellular matrix, cell wall. [16]
4. What are Lysosomal & Vacuolar membrane pumps? [16]
5. Write about the early experiments, which led to the discovery of cyclin dependent
kinases. [16]
6. Using suitable examples explain cytoplasmic determinants in cell differentiation.
[16]
7. Define a “receptor”. Discuss briefly the different types of receptors. [16]
8. Define signal transduction and explain it briefly. [16]
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Code No: 33111 Set No. 4
II B.Tech I Semester Supplimentary Examinations, May/Jun 2009
CELL BIOLOGY
(Bio-Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
⋆ ⋆ ⋆ ⋆ ⋆
1. Compare and contrast the properties and strategies of eukaryotic and prokaryotic
cells in terms of cell size, compartmentalization, nuclei, internal membranes, DNA
and cell specialization. [16]
2. Justify the statement “Plasma membrane acts as a semi-permeable membrane in
libing cells”. [16]
3. What is the function of Peroxisomes? Where are they present? [16]
4. Describe the process of receptor-mediated endocytosis with suitable illustrations.
[16]
5. Drawl and label the cell cycle and describe the events that occur during each
stage/phase of the cell cycle. [16]
6. Discuss the general characteristics of cell differentiation. [16]
7. What role does flagellar motion play in bacterial chemo taxis? [16]
8. Define signal transduction and explain it briefly. [16]
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