Download AS2 Revision Questions

AS2 Revision Questions
1. Complete the following sentence;
Large animals have a ----------- surface area to volume ratio.
2. Explain why small animals have high respiration rates.
3. Describe how root hair cells and erythrocytes are adapted to gas exchange.
4. Define the terms transpiration and translocation.
5. State Fick’s Law.
6. How is the mesophyll layer of the leaf adapted for gas exchange?
7. Name the tissue which lines the a) alveoli b) blood capillary.
8. State four adaptations of a gas exchange surface.
9. Draw the respiratory tree of a human.
10. Describe the breathing mechanisms which occur during inspiration.
11. What is emphysema?
12. During J-tube analysis name the gas absorbers that are used, the order in
which they are introduced to the column and the gases they absorb.
13. Describe how you would set up a respirometer and use it to measure the
respiration rates of a woodlouse.
1. Name the plant tissue located in the pith region of a plant.
2. Name the complex plant tissue responsible for the translocation of organic
substances.
3. Complex tissues are composed of more than one cell type; name the cells
that make up xylem.
4. What patterns of lignifications are found in xylem?
5. Describe the role of endodermal cells in the transport of water.
6. Name the two pathways water can take when it moves towards the stele.
7. Name and describe three internal and external factors that affect the rate of
transpiration.
8. Describe three ways that xerophytes are adapted to living in arid
conditions.
9. Explain the components of the CAT theory.
10. Describe how you would use a potometer to investigate the effect of
humidity on the rate of transpiration.
1. Why do humans have a double circulatory system?
2. Describe how blood vessels differ structurally from each other and explain
how this is an adaptation of their role in the body.
3. Explain the occurrence of the first and second heart sounds.
4. Describe the myogenic control of a heartbeat.
5. Describe the cardiac cycle.
6. How is the wave of excitation depicted in an ECG?
7. Name the components of the blood.
8. How is tissue fluid formed?
9. Describe the mechanism of blood clotting.
10. What does the oxygen dissociation curve depict?
11. Explain the BOHR EFFECT.