Cytology questions | form five Biology

1. Give  labeled drawings to show the appearence of an anima cell at each of the following stages of division

1. ) Pachytene
2. ) Diplotene
3. ) Metaphase 1 of meiosis
4. ) Metaphase of mitosis

2. Briefly describe the events taking place at each of the stages in (a) above.

Answer / Solution

UNSOLVED

Below is a diagram of an acinar cell of a pancreas involved in the synthesis and secretion of an inactive enzyme (zymogen)

1. Name parts labeled A,B,C,D,E,F,G and H.
2. Briefly explain how organelles A, C,D and H are involved in the synthesis and secretion of the inactive enzyme.

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1. Draw the structure of animal cell as seen under electron microscope
2. i. Name a double membrane organelle found inplant cell only

2. How is the organelle adapted to its role?

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1. Distinguish between structural and functional proteins.
2. Draw a large diagram of a typical plant cell as seen under the electron microscope. Indicate using the letters below, the cellular structures concerned with:

1. Cellular respiration
2. Protein synthesis
3. Photosynthesis
4. Transport and modification of cellular proteins and lipids
5. Transport and provision of surface area for lipids and steroid synthesis
6. Transport of cellular proteins
7. Control exchange of materials between cells
8. Control cell division.

100. What are the possible roles of the cell wall?

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1. Describe the features of cell membrane
2. Assess the suitability of the structure of a mitochondrion to its functions. Give five points.

Answer / Solution

UNSOLVED