Essential Biology 3.7-3.8 – Respiration & Photosynthesis
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See also text Clegg - pp 76-82, 82-90
Topic 3.7 Respiration
1. Define cell respiration.
2.
Write a word equation for the process of (aerobic) respiration, using glucose as a reactant.
3. Other than glucose or carbohydrates, which other organic compounds could be used in the
process of respiration?
4.
5.
In the space below, draw a simplified diagram of the structure of ATP.
Label the location of the high-energy bond.
State six energetic processes that make use of ATP.
6. Distinguish between aerobic and anaerobic in terms of respiration.
7.
In which two parts of the cell does aerobic cell respiration take place?
8.
Label the diagram of aerobic cell respiration below.
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Essential Biology 3.7-3.8 – Respiration & Photosynthesis
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9.
Label the diagram of anaerobic cell respiration below.
10. Label the diagram below with the correct processes, locations and compounds:
glucose 6C; pyruvate 3C; no O2/yeast – ethanol; no O2 mammal – lactate; w/O 2 acetyl CoA
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Essential Biology 3.7-3.8 – Respiration & Photosynthesis
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Topic 3.8 - Photosynthesis
1. Define photosynthesis
2. Write a word equation and balanced symbol equation for the process of photosynthesis.
3. Glucose is a product of photosynthesis. It can be used directly, stored as starch or used to make
cell walls (as cellulose).
a. Which process results in the formation of polysaccharides from monosaccharides (review)?
b. Outline the process below (review)
c. What are the steps in testing a leaf for the presence of starch?
d. Explain why a starch test will be negative if a green plant Is left in the dark for a long period
of time.
4. Light from the Sun is composed of a range of wavelengths (colors).
a. Distinguish between frequency and wavelength in terms of electromagnetic radiation.
b. Between which wavelengths is light visible to the human eye?
c. Match the ranges of wavelengths below with their colours.
i. 400-500nm =
ii. 500-650nm =
iii. 700-800nm =
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Essential Biology 3.7-3.8 – Respiration & Photosynthesis
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5. What is chlorophyll? In which organelle can it be found?
6. Distinguish between action and absorption spectra for photosynthesis.
7. In the space below, draw a graph showing the action and absorption spectra for chlorophyll.
Annotate the diagram to show why leaves appear green.
8. Outline the reasons for some plants having leaves that are not green.
9. Describe three ways (two direct and one indirect) in which the rate of photosynthesis can be
measured.
Direct 1:
Direct 2:
Indirect:
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Essential Biology 3.7-3.8 – Respiration & Photosynthesis
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10. In the space below, draw a set of axes and a curve explaining how light intensity can affect the
rate of photosynthesis of a green plant.
11. In the space below, draw a set of axes and a curve explaining how carbon dioxide
concentration can affect the rate of photosynthesis of a green plant.
12. In the space below, draw a set of axes and a curve explaining how temperature can affect the
rate of photosynthesis of a green plant.
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