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Important Questions for "Cell Biology":

[1]

  1. A cell is a basic unit of life. Prove it with suitable examples.
  2. What do you understand about Squamous Cell Carcinoma and Adenocarcinoma?
  3. Write a short note on Ribosome.

[2]

  1. What do you mean by membrane system? Describe the same with reference to Endoplasmic Reticulum (ER) and Golgi Complex.
  2. Discuss the events taking place during interphase in cell cycle.
  3. Differentiate between the following: (i) Prokaryotic and Eukaryotic cell (ii) Plant and Animal cell (iii) Mitosis and Meiosis (iv) Euchromatin and Heterochromatin

[3]

  1. Differentiate between the following terms: (i) Anaphase I and Anaphase II of meiosis (ii) Prokaryotic cell and Eukaryotic cell (iii) SER and RER
  2. Discuss ultrastructure of mitochondria in detail.
  3. How do cancer cells differ from normal cells? Discuss in detail.

[4]

  1. Write short notes on reverse transcription, PPLOs, organization of nucleosome, and cell cycle.
  2. Describe the structure, function, and origin of peroxisomes.
  3. Write short notes on signal transduction pathways, role of Ca ions, muscle and nerve cells, and degradation of cellular components.

[5]

  1. What is cell-cell communication? Describe the cell adhesion molecules in detail with examples.
  2. Give an account of the ultra-structure and function of mitochondria.
  3. Describe the process of biosynthesis of mitochondria and chloroplasts. Highlight the differences (preferably with diagrams).

[6]

  1. Describe the structure and function of chromosome.
  2. Write detailed notes on the following: (a) Differences in prokaryotic and eukaryotic cell giving suitable diagram. (b) Differentiate between metaphase-I and metaphase-II giving suitable diagram.
  3. Write short notes on the following: (a) Functions of endoplasmic reticulum (b) Inositol phosphate (c) Difference between normal and cancer cell.

[7]

  1. Discuss about the structure and functions of mitochondria.
  2. Write detailed account of ultrastructure of golgi complex and explain the role of golgi complex in secretory pathway in a cell.
  3. What is phagocytosis? Describe the role of lysosomes in phagocytosis.

[8]

  1. Write short notes on the following: (a) Slime layer and capsule (b) Microtubules and microfilaments.
  2. Differentiate between the following: (a) Active and passive transport (b) Cell wall of Gram-positive and Gram-negative bacteria.
  3. Write an essay on Golgi apparatus.

[9]

  1. Comment upon various levels of organization.
  2. Give a detailed ultrastructure of any four of the following: Golgi bodies, Endoplasmic reticulum, Ribosomes, Cytoskeletal, Mitochondria, Chloroplast.
  3. Describe the mechanism of osmotic protection in prokaryotes.

[10]

  1. Give a detailed account of the structure and function of mitochondria.
  2. Write explanatory notes on channel proteins, spindle apparatus, and prophase I of meiosis (diagram only) along with its genetic significance.
  3. Write detailed notes on denaturation and renaturation of proteins, and polysaccharides and their types.

[11]

  1. Sex chromosomes in human males are?
  2. The number of chromosomes after meiotic division I in meiosis?
  3. In mammalian cells the average volume occupied by nucleus is about 50%?

[12]

  1. The gene which masks the expression of other gene is called?
  2. If the base sequence of a segment of DNA is 3'-ATGGCAC-5' then the base sequence of m-RNA transcript will be?
  3. Cellular respiration takes place in?

[13]

  1. Which organelle plays a role in genetic information transfer?
  2. The Watson-Crick double-helix DNA model is called?
  3. Which syndrome results from having two X and one Y chromosome?

[14]

  1. Discuss the salient features of prokaryotic cell membrane.
  2. Describe the operon model for regulation of gene activity.
  3. What is genetic code? Discuss the various properties of genetic code giving suitable examples.

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