IB BIOLOGY SL/HL Year 1
(SECONDARY)
ESSENTIAL UNIT 8 (E08)
Cellular Respiration and Photosynthesis
(March 2011)
Unit Statement:
This unit introduces cellular respiration and photosynthesis. Topics presented should be
connected to EO2 Cells and EO3 Chemistry of Life, and should be referenced in every
subsequent TSW if possible. This cross-referencing reinforces the interconnectivity of the
curriculum. Topics will include glycolosis, Krebs cycle, oxidative phosphorylation,
mitochondria, light and photosynthesis, light dependent and light independent reactions,
chloroplasts, and limiting factors in photosynthesis
Materials:
Essential Outcomes:
Topic 8 Cell respiration and Photosynthesis
SG-PG
topic
CC-PG
topic
1. Glycolosis
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8
a. 8.1.1 State that oxidation involves the loss of electrons from an element,
whereas reduction involves a gain of electrons; and that oxidation
frequently involves gaining oxygen or losing hydrogen, whereas reduction
frequently involves losing oxygen or gaining hydrogen.
b. 8.1.2 Outline the process of glycolysis, including phosphorylation, lysis,
oxidation and ATP formation.
2. Krebs cycle
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177
8
a. 8.1.4 Explain aerobic respiration, including the link reaction, the Krebs
cycle, the role of NADH + H+, the electron transport chain and the role of
oxygen.
3. Oxidative phosphorylation
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177
8
a. 8.1.5 Explain oxidative phosphorylation in terms of chemiosmosis.
4. Mitochondria
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8
a. 8.1.3 Draw and label a diagram showing the structure of a mitochondrion
as seen in electron micrographs.
b. 8.1.6 Explain the relationship between the structure of the mitochondrion
and its function.
5. Light and Photosynthesis
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9
a. 8.2.2 State that photosynthesis consists of light-dependent and lightindependent reactions.
b. 8.2.7 Explain the relationship between the action spectrum and the
absorption spectrum of photosynthetic pigments in green plants.
6. Light dependent reactions
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a. 8.2.3 Explain the light-dependent reactions.
b. 8.2.4 Explain photophosphorylation in terms of chemiosmosis.
7. Light Independent reactions
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a. 8.2.5 Explain the light-independent reactions.
8. Chloroplasts
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9
a. 8.2.1 Draw and label a diagram showing the structure of a chloroplast as
seen in electron micrographs.
b. 8.2.6 Explain the relationship between the structure of the chloroplast and
its function.
9. Limiting Factors in Photosynthesis
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9
a. 8.2.8 Explain the concept of limiting factors in photosynthesis, with
reference to light intensity, temperature and concentration of carbon
dioxide.
Suggested Assessments and Activities may include but are not limited to the following:
ICT Labs:



Virtual Lab 5 - How
Do Proteins Help
Chlorophyll Carry
Out Photosynthesis?
Oxidative
Respiration
Photosynthes
is
Informational Prepared
Labs:


AP Lab 4:
Photosynthesis
AP Lab 5: Cellular
Respiration
Vocabulary: