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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. Write a note on Epithelial Cells.
  3. Write a short note on Ribosome.

[2]

  1. Discuss the events taking place during interphase in cell cycle.
  2. Describe the stages of meiosis with particular emphasis on Prophase-I.
  3. Write notes on the following: (i) Role of microtubules in cell division (ii) Significance of Meiosis (iii) Function of mesosome in a prokaryotic cell

[3]

  1. Why is the nucleus called the controlling center of a cell?
  2. Write detailed notes on the following: (i) Programmed cell death (ii) Suicidal bags
  3. Write notes on the following: (i) Transcription (ii) Fluid mosaic model of plasma membrane (iii) Functions of Golgi bodies

[4]

  1. What is central dogma? Describe the role of DNA and RNA in protein synthesis.
  2. Write detailed notes on synaptonemal complex and its role in chromosome pairing, and ultrastructure and function of chloroplast.
  3. Write notes on differences between meiotic and mitotic cell division, differences between transcription and translation, and ultrastructure and function of Golgi complex.

[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. Write short notes on the following: (a) PPLO (b) Labelled sketch of prokaryotic cell (c) Interphase (d) Role of Ca ions in cell signalling.
  2. Describe the structure and function of chromosome.
  3. Describe in detail the process of protein synthesis in prokaryotes.

[7]

  1. Write notes on: (a) Nucleus (b) Peroxysomes.
  2. What is phagocytosis? Describe the role of lysosomes in phagocytosis.
  3. Write notes on: (a) RER (b) Nucleoplasm.

[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. Who gave Fluid Mosaic Model? Comment upon different models of cell membrane structure.
  2. Describe the mechanism of osmotic protection in prokaryotes.
  3. Write short notes on any two of the following: Peroxisomes, Nuclear envelope, Lysosome, Proton pump.

[10]

  1. Explain cell cycle and apoptosis, and discuss their biochemical and genetic mechanisms.
  2. Give a brief account of the various known levels of protein structure.
  3. Describe the basic principles involved in chromatography. Discuss its role in plant biology.

[11]

  1. The stain used to visualize mitochondria is?
  2. Plasma membrane is made up of?
  3. Chiasmata can be observed clearly at?

[12]

  1. The gene which masks the expression of other gene is called?
  2. If haploid number of chromosomes in a cell is 12, then the trisomic number will be?
  3. Synapsis takes place at which of the following stage?

[13]

  1. Which of the following is not a function of the plasma membrane?
  2. Which molecule moves regularly from the nucleus to the cytoplasm?
  3. Phenotypic ratio of a dihybrid test cross is?

[14]

  1. Describe the process of transcription by RNA polymerase-II in eukaryotes.
  2. What is genetic code? Discuss the various properties of genetic code giving suitable examples.
  3. Write detailed notes on the following: Structure and functions of cell wall, Structure and function of Golgi complex.

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