1.
State what is meant by surface area to volume ratio. [1]
JD SCIENCE
Organisms exchange substances with their environment
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by Fick's law. [1]
3.
State what is meant by the alveolus. [1]
4.
State what is meant by the counter-current system in fish. [1]
5.
State what is meant by the cardiac cycle. [1]
6.
State what is meant by tissue fluid formation. [1]
7.
State what is meant by haemoglobin dissociation. [1]
8.
State what is meant by xylem transport. [1]
9.
State what is meant by phloem translocation. [1]
10.
State what is meant by the Bohr effect. [1]
11.
Amira is asked about surface area to volume ratio in a AQA Biology paper.
(a) Describe surface area to volume ratio. [2]
(b) Explain why surface area to volume ratio is important in this topic. [3]
12.
Amira is asked about Fick's law in a AQA Biology paper.
(a) Describe Fick's law. [2]
(b) Explain why Fick's law is important in this topic. [3]
13.
Amira is asked about the alveolus in a AQA Biology paper.
(a) Describe the alveolus. [2]
(b) Explain why the alveolus is important in this topic. [3]
14.
Amira is asked about the counter-current system in fish in a AQA Biology paper.
(a) Describe the counter-current system in fish. [2]
(b) Explain why the counter-current system in fish is important in this topic. [3]
15.
Amira is asked about the cardiac cycle in a AQA Biology paper.
(a) Describe the cardiac cycle. [2]
(b) Explain why the cardiac cycle is important in this topic. [3]
16.
Amira is asked about tissue fluid formation in a AQA Biology paper.
(a) Describe tissue fluid formation. [2]
(b) Explain why tissue fluid formation is important in this topic. [3]
17.
SA of a cube side 3 cm [3]
18.
SA:V of that cube [3]
19.
Cardiac output 5.6 dm³/min, HR 70. Stroke volume [3]
20.
Ventilation rate 12 /min × 0.5 dm³ [3]
21.
A capillary is 1 µm thick. Time idea: diffusion path compared with 10 µm [3]
22.
Heart rate rises from 60 to 150. Percentage increase [3]
23.
Amira carries out a AQA-style required practical linked to exchange and transport. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Amira carries out collecting valid data for exchange and transport. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Amira carries out drawing a graph for exchange and transport. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Amira carries out evaluating a method about exchange and transport. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare surface area to volume ratio with Fick's law. [4]
28.
Compare Fick's law with the alveolus. [4]
29.
Compare the alveolus with the counter-current system in fish. [4]
30.
Compare the counter-current system in fish with the cardiac cycle. [4]
31.
Apply your knowledge of haemoglobin dissociation to this situation: cooperative binding [3]
32.
Apply your knowledge of xylem transport to this situation: transpiration pull [3]