Download 1 ASHA Lectures Photosynthesis and Cellular Respiration Practice

ASHA Lectures
Photosynthesis and Cellular Respiration Practice SAC (28 Marks)
1. Write a complete, balanced chemical equation for photosynthesis. (2)
2. How much energy is produced in the process of photosynthesis? (1)
3. Choose 2 inputs of the light independent stage, and describe their role in
photosynthesis. (4)
4. Complete the table for anaerobic respiration. (3)
Plants
Animals
ATP
Inputs
Outputs
5. Which stage of cellular respiration produces the greatest amount of energy,
and where in the cell does this stage occur? (1)
6. Give 2 conditions that could change the rate of photosynthesis. Explain how
these conditions might have this effect. (3)
7. a) What is the light compensation point of a plant? (1)
b) Is this likely to change during 24 hours for a given plant? (1)
1 8. Explain the biological significance of the relationship between photosynthesis
and respiration. (1)
9. Light intensity is increased indefinitely for a plant. Draw a graph to show the
changes in the rate of photosynthesis that will occur. (2)
10. VCAA 2008 Q3
The following diagrams show:
• Graph 1: The rate of photosynthesis in a green plant at different wavelengths
of light.
• Graph 2: The estimated absorption of the different wavelengths of light by the
different plant pigments.
a) Explain why the graph showing the rate of photosynthesis has approximately
the same shape as the absorption graphs of the plant pigments. (1)
2 The following diagram shows a simplified representation of the first stage of
photosynthesis.
b) i. Name one input item that X could represent. (1)
ii. Name one output item that Y could represent. (1)
The breakdown of glucose in aerobic respiration can be represented by the
simplified equation:
c) What is the energy yield per molecule of glucose as a result of aerobic
respiration? (1)
The breakdown of glucose in aerobic respiration can also be represented as
occurring in three particular stages as indicated below.
d) i. Within a cell, where does the electron transport stage of aerobic respiration
occur? (1)
ii. Describe what happens during the electron transport stage. In your answer
include the name of product Z. (2)
3 11. VCAA 2008 Q6
The following graph shows the relationship between light intensity and net
oxygen uptake or output by a particular green plant.
At a light intensity of 10 units
A. the rate of photosynthesis is zero.
B. the rate of aerobic respiration is zero.
C. oxygen produced by photosynthesis is equal to the oxygen used by
aerobic respiration.
D. oxygen produced by photosynthesis is equal to twice the oxygen used by
aerobic respiration.
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