CELL BIOLOGY Question Papers (Supple, 2007 Feb, R05)

SET :1

1. How is a Prokaryotic cell different from an eukaryotic cell? [16]

2. Explain how movement occurs a long [8 × 2 = 16]
(a) Microtubules
(b) Microfilaments

3. Explain how the nucleolus, ribosomes, endoplasmic reticulum, and Golgi apparatus function together in protein synthesis. [16]

4. Write a note on ATP powered pumps in detail. [16]

5. What is the cell cycle? What are the stages of the cell cycle? How does the cell cycle vary among different types of cells? [16]

6. With respect to cell differentiation write notes on:
(a) Cytoplasmic determinants
(b) Nucleoplasmic interactions. [8+8]

7. Write short notes on:
(a) G-protein coupled receptors
(b) Enzyme linked surface receptors. [16]

8. Using a suitable example discuss the role of secondary messengers in signal transduction. [16]


SET :2

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. Draw the basic structure of the major types of lipids found in cellular membranes. How are these lipids organized into a bilayer? How does the lipid bilayer of a cell membrane form a barrier to molecules? [16]

3. What is the function of Peroxisomes? Where are they present? [16]

4. (a) What is Passive diffusion in membrane transport?
(b) What is fasciliated diffusion in membrane transport? [8 × 2 = 16]

5. In what type of cell, Eukaryote, Prokaryote, or Both, does mitosis occur? EXPLAIN WHY? Describe how a Prokaryotic Cell reproduces? What is this process called? [16]

6. Discuss the general characteristics of cell differentiation. [16]

7. How are secondary messengers involved in receptor mediated cell signaling? [16]

8. What are ”Protein Kinases”, ”Phosphatases” and ”Phosphodiesterases” and their role in signal transduction? [16]


SET :3

1. With a neat labelled diagram explain the structure of a typical Prokaryotic cell. [16]

2. Draw the basic structure of the major types of lipids found in cellular membranes. How are these lipids organized into a bilayer? How does the lipid bilayer of a cell membrane form a barrier to molecules? [16]

3. Explain how ATP is synthesized in the Mitochondria. [16]

4. Explain the difference between passive transport and active transport. Describe the action of the sodium-potassium pump. [16]

5. Describe briefly the stages in meiosis type of cell division. [16]

6. Explain what is a stem cell and what is its importance. [16]

7. How are receptors involved in cellular regulation? [16]

8. Write short notes on:
(a) Signal transduction
(b) Endocrine signaling
(c) Panacrine signaling
(d) Autocrine signaling. [4+4+4+4]


SET :4

1. With a neat labelled diagram explain the structure of a typical eukaryotic cell. [16]

2. Using suitable examples explain what are micro filaments. [16]

3. Describe the organization of the membranes of a chloroplast. How does this organization differ from that of mitochondria? [16]

4. What is meant by Proton pumps in membrane transport? Explain citing suitable examples.

5. Write short notes on:
(a) Interphase
(b) Cytokinesis. [8+8]

6. Briefly explain the role of Cytoplasmic determinants during cell differentiation.[16]

7. Using suitable example explain cytosolic receptors. [16]

8. With respect to secondary messengers, write short notes on:
(a) cAMP
(b) cGMP. [8+8]