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Form 1 Biology topical questions and answers on the cell

Form 1 Biology topical questions and answers on the cell.

Lessons (26)

• 1.    Name the organelle that performs each of the following functions in a cell. Protein Synthesis Transport of cell secretions
  1m 13s

• 2.    State two functions of cell sap.
  1m 3s

• 3.    State the functions of the following cell organelles (a) Golgi apparatus (b) Ribosomes
  0m 58s

• 4.    Which organelle would be abundant in: (a) Skeletal muscle cell (b) Palisade cell
  0m 51s

• 5.    Name the organelle in which protein synthesis takes place.
  0m 14s

• 6.    State the function of the organelles: (a) Lysosomes (b) Golgi apparatus
  1m 26s

• 7.    (a) What is the formula for calculating linear magnification of a specimen when using a hand lens? (b) Give a reason why staining is necessary when preparing specimens for observation under the microscope.
  1m 18s

• 8.    Plant cells do not burst when immersed in distilled water. Explain.
  1m 14s

• 9.    State three functions of Golgi apparatus.
  1m 13s

• 10.    State two functions of the endoplasmic reticulum.
  0m 48s

• 11.    State the functions of the following parts of a light microscope. (a) Objective lens (b) Diaphragm.
  0m 45s

• 12.    State the function of the following cell organelles. (a) Ribosome. (b) Lysosomes.
  1m 13s

• 13.    The diagram below shows a specified plant cell. (a) (i) Name the cell. (ii) Name the parts labeled D and E. (b) State the function of the part labeled C.
  1m 43s

• 14.    State the functions of the following parts of a light microscope. Fine adjustment knob
  0m 52s

• 15.    Give reasons for carrying out the following procedures when preparing temporary wet mounts of plant tissues. (a) Making thin plant sections. (b) Adding water on the plant section. (c) Placing a cover slip over the plant section.
  1m 7s

• 16.    The figure below is a fine structure of a generalized animal cell as seen under an electron microscope. (a) Name the parts labeled A and B. (b) How is the structure labeled B adapted to its function?
  2m 6s

• 17.    (a) Name the part of a light microscope used to bring an image of a specimen into sharp focus. (b) Why is it recommended to keep the stage of the microscope dry?
  0m 56s

• 18.    Name the organelle that is involved in each of the following: (a) Manufacture of lipids. (b) Formation of lysosomes.
  0m 44s

• 19.    Using a microscope, a student counted 55 cells across a field of view whose diameter was 6000µm. Calculate the average length of cells. Show your working.
  1m 50s

• 20.    State one way in which each of the following is naturally adapted to its function: (a) Neurone. (b) Mitochondrion
  2m 12s

• 21.    A student drew a 6cm long diagram of a plant flower. If the actual length of the flower was 12cm, calculate the magnification of the drawing made by the student. Show your working.
  2m 13s

• 22.    (a) State two advantages of using a coverslip when preparing a specimen for observation under a light microscope. (b) How is the low power objective lens manipulated to focus a specimen for observation under a light microscope?
  1m 28s

• 23.    Below are diagrams of a cell organelle obtained from different organs of an animal. (i) For each organelle, state an organ in the urinary system where it is likely to be found. (ii) Give a reason for your answer in (a)
  1m 36s

• 24.    (a) State the function of a mirror in a light microscope. (b) Give one reason why the coarse adjustment knob should not be used to lower the high power objective.
  1m 46s

• 25.    The diagram below represents a nucleus. (a) (i) Name the structures labeled E and F. (ii) State the function of F. (iii) With reference to the nucleus, state one difference between an animal and a bacterial cell. (b) Name the plant cell organelle: (i) That stores chlorophyll. (ii) Responsible for intracellular digestion. (c) State two main functions of the vacuole in the amoeba.
  3m 30s

• 26.    The diagram below illustrates a specialized cell obtained from a certain tissue. (a) Name the cell. (b) State two ways in which the cell is structurally adapted to its function.
  3m 21s