Gaseous exchange and respiration questions | form five Biology

1. Diagrams A and B represent two cell organelles as seen under the electron microscope.

1. Identify the two cell organelles
2. Name the structures numbered 1-8

2. Without using diagrams, outline the processes taking place in the structures labelled 3 and 8
3. Explain briefly how organelles 1 and 2 are adapted to the functions they perform.

Answer / Solution

UNSOLVED

1. Compare photosynthetic phosphorylation and oxidative phosphorylation
2. Describe how energy in the form of ATP is formed during cyclic photophosphorylation.

Answer / Solution

UNSOLVED

1. Study the photograph below carefully

1. Giving reasons explain what happens to the breathing rate and heart beat in the men shown in the photograph.
2. Explain briefly why the muscles of these men are going to experience anaerobic respiration

2. How does anaerobic respiration differ from aerobic respiration?

Answer / Solution

UNSOLVED

1. What is glycolysis?
2. Summarise the essential features of glycolysis which lead to the release of energy froma molecule of glucose (flow chart is unnecessary).

Answer / Solution

UNSOLVED

1. Describe three (3) ways of obtaining gaseous oxygen in terrestrial flowering plants
2. Briefly explain why the oxidation of fats liberates more than double the energy of the same quantity of carbohydrate.

Answer / Solution

UNSOLVED