Cytology questions | form five Biology

1. List two roles of the cell membranes
2. Mention  one function for the following organelles and briefly explain how each organelle is adapted to its function

         (i)Golgi body   (ii) Endoplasmic reticulum (iii) Chloroplast  (iv) Mitochondrion

1. Justify why a cell is said to be the basic unit of life
2. Explain three roles played by each of the following organelles:

       (i)Nucleus (ii)Lysosomes (iii)Microtubes

100. Describe four advantages of membrane bound organelles.

1. By using examples classify cells into two major groups. Give four features for each group to justify your answer.
2. Outline three advantages of the presence of membranes in cell organelles.

1. Describe the tertiary structure of protein
2. Elaborate six categories of protein basing on their functions.

1. Differentiate between eukaryotic and prokaryotic cells basing on the following criteria.

1. cell division
2. Genetic material
3. Cell wall
4. Flagella
5. Respiration
6. Photosynthesis
7. Nitrogen fixation

2. What is cell differentiation?

1. What are the chemical composition of proteins?
2. State supporting and storage functions of carbohydrates using one example in each case.

Describe categories of proteins based on their structures and functions

1. Study figure 2 and answer the questions which follow.

1. Identify the cell
2. Name the parts labeled A, B, C, D, E, F and G.

2. Outline five differences between the cell in (a) above and a trypanosome cell?

1. Name the chemical composition of proteins
2. Explain six categories of protein based on their functions.

1. (i)Briefly explain how to test for protein in a given solution using biuret test

          (ii) What is the basis of protein test?

2. Explain how each of the following factors cause protein denaturation

1. Heat
2. Acid
3. Alkalis
4. Mechanical force.