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Important Questions for "Cell Biology":

[1]

  1. Write a detailed note on the Cytoskeleton of eukaryotic cells.
  2. Write a detailed well-labeled diagram of Lysosome and Peroxisome.
  3. Write a note on Replication.

[2]

  1. Differentiate between the following: (i) Prokaryotic and Eukaryotic cell (ii) Plant and Animal cell (iii) Mitosis and Meiosis (iv) Euchromatin and Heterochromatin
  2. Describe the stages of meiosis with particular emphasis on Prophase-I.
  3. What is Apoptosis? What types of cellular and physiological changes occur during the process.

[3]

  1. Discuss ultrastructure of mitochondria in detail.
  2. Write notes on the following: (i) Transcription (ii) Fluid mosaic model of plasma membrane (iii) Functions of Golgi bodies
  3. Write very short answers for the following: (i) Difference between plant cell and animal cell (ii) Peroxisomes (iii) Nerve cells (iv) Functions of chloroplast

[4]

  1. Discuss, with suitable diagrams, the various stages of prophase I of meiotic cell division.
  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. Discuss the microtubular organisation of cilia and flagella. How do the microtubular elements help the movements of these organs?
  2. What is cell-cell communication? Describe the cell adhesion molecules in detail with examples.
  3. Give an account of the ultrastructure, biochemistry, and function of the nucleus.

[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. Give an account of the detailed ultra-structure of plasma membrane and also discuss its functions.
  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. What is phagocytosis? Describe the role of lysosomes in phagocytosis.
  3. Write notes on: (a) Cilia and Flagella (b) Microtubules.

[8]

  1. Describe the ultrastructure of Mitochondria and its functions.
  2. Write short notes on the following: (a) Cilia (b) Actin (c) Nuclear pore (d) Pilli.
  3. Write short notes on the following: (a) Fluid mosaic model of plasma membrane (b) Lysosomes.

[9]

  1. Give a detailed ultrastructure of any four of the following: Golgi bodies, Endoplasmic reticulum, Ribosomes, Cytoskeletal, Mitochondria, Chloroplast.
  2. Who gave Fluid Mosaic Model? Comment upon different models of cell membrane structure.
  3. Write down the main features of prokaryotic cell wall. Differentiate prokaryotic cell wall from the cell wall of eukaryotic microbes.

[10]

  1. Write short notes on plasma membrane, plasmodesmata, ion carriers, synaptonemal complex, programmed cell death, protein hydrolysis, amino acid sequencing, carbohydrate metabolism, biosynthesis of amino acid, and enzyme kinetics.
  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 gene which masks the expression of other gene is called?
  2. TAY-SACHS disease is caused by?
  3. Nucleic acid was discovered as nuclein by?

[12]

  1. The number of nucleotide pairs per turn in B-DNA?
  2. A major site for synthesis of lipids is?
  3. Peptide bonds are involved in linking amino acids?

[13]

  1. Number of autosomes in a normal human sperm is?
  2. Which organelle contains hydrolytic enzymes?
  3. A DNA molecule with 20,000 base pairs contains how many nucleotides?

[14]

  1. Discuss the salient features of prokaryotic cell membrane.
  2. Define genetic material and briefly describe its properties. Describe one experiment which clearly showed that DNA is the genetic material.
  3. Describe Watson and Crick model of DNA structure. Discuss the differences between DNA and RNA.

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