CELL BIOLOGY Question Papers (REGULAR,2006)

SET-1

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
2. Describe the following terms- carbohydrate; lipid; protein; enzyme; coenzyme; allosteric factor; holoenzyme; apoenzyme
3. Discuss each of the following
1. the structure and role of the cell membrane
2. the structure and role of the mitochondria
4. Name and describe three types of passive transport and three types of active transport
5. Briefly explain the following stages of a cell cycle

(a) S phase

(b) G1 phase

(c) G2 phase

(d) Mitotic phase

6. Write short notes on:

(a) Importance of stem cells in body

(b) Pattern of stem cell division

7. List the general types of receptor systems and differentiate between those most often used by neurotransmitters, hormones and growth factors
8. What are the two major types of hormone producing cells? Compare exocrine and endocrine glands, especially considering where they respectively release their products. What part/function of the pancreas is an exocrine gland; What part/function of the pancreas is an endocrine gland; what kinds of chemical signals trigger the release of hormones

SET-2

1. Explain the characteristics of a living cell

2. What property allows carbon compounds to exist in a number of forms and what properties of a carbon atom are critical to life.

3. Compare the properties of the inner and mitochondrial membranes; inter-membrane space and matrix. In what whey are peroxisomes similar to mitochondria? In what way are they unique?
4. Write notes on the following:

(a) Endocytosis

(b) Exocytosis

(c) Phagocytosis

(d) Pinocytosis

5. What is meant by a cell cycle check point? What is its importance? How does a cell stop its progress at one of these check points?
6. Briefly explain the role of cytoplasmic determinants during cell differentiation
7. Discuss about the receptors that bind to DNA
8. List the major human endocrine organs and their associated hormones. Add a note on their role in signaling pathway.

SET-3

1. Explain the characteristics of a living cell
2. Discuss the biological importance of each of the following organic compounds in relation to cellular structure and function in animals

(a) Carbohydrates

(b) Proteins

(c) Lipids

(d) Nucleic acids

3. Describe the organization of the membranes of a chloroplast. How does this organization differ from that of mitochondria?
4. Compare and contrast facilitated diffusion with active transport
5. Explain the importance of the following checkpoints:

(a) G1 to S transition

(b) G2 to M transition

6. Discuss the processes of cleavage, gastrulation and nuerulation in a mammalian embryo, tell what each process accomplishes.
7. Why are some receptors present on cell surface while some are present in cytoplasm? Explain.
8. What are secondary messengers? What is the general action of Camp? How is that secondary messenger system allowing amplification of the signal?

SET-4

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
2. Carbon is a very important element in living systems. Describe the various characteristics of the carbon atom that makes possible the building of a variety of biological molecules.
3. Discuss each of the following
1. the structure and role of the cell membrane
2. the structure and role of the mitochondria

4. Write notes on the following:

(a) Endocytosis

(b) Exocytosis

(c) Phagocytosis

(c) Pinocytosis

5. Write short notes on:

(a) Interphase

(b) Cytokinesis

6. Explain the term determinants in cell differentiation using suitable examples
7. Using suitable examples explain cytosolic receptors
8. How are G-proteins involved in signal transduction