Year 11 students, check the dates!
In this section we will explore how plants harness the Sun’s energy in photosynthesis in order to make food. This process liberates oxygen which has built up over millions of years in the Earth’s atmosphere. Both animals and plants use this oxygen to oxidise food in a process called aerobic respiration which transfers the energy that the organism needs to perform its functions. Conversely, anaerobic respiration does not require oxygen to transfer energy. During vigorous exercise the human body is unable to supply the cells with sufficient oxygen and it switches to anaerobic respiration. This process will supply energy but also causes the build-up of lactic acid in muscles which causes fatigue.
Objectives - After this topic you should know:
The raw materials and energy source for photosynthesis.
That photosynthesis is an endothermic reaction.
The equations that summarise photosynthesis.
Study Resources:
Objectives - After this topic you should know:
What factors limit the rate of photosynthesis in plants.
Required practical activity 6:
Use an aquatic plant to observe the effect light intensity has on the rate of photosynthesis.
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Objectives - After this topic you should know:
How plants use the glucose they make.
The extra materials that plant cells need to make proteins.
Some practical tests for starch, sugars and proteins.
Study Resources:
Objectives - After this topic you should know:
How the different factors affecting the rate of photosynthesis interact.
How humans can manipulate the environment in which plants grow.
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Lesson Objectives - After this topic you should know:
The chemistry of aerobic respiration.
Why cellular respiration is so important.
Study Resources:
Lesson Objectives - After this topic you should know:
How your body responds to the increased demands for energy during exercise.
Study Resources:
Lesson Objectives - After this topic you should know:
Why less energy is transferred by anaerobic respiration than by aerobic respiration.
What is meant by an oxygen debt (H).
That anaerobic respiration takes place in lots of different organisms including plants, bacteria and fungi
Study Resources:
Lesson Objectives - After this topic you should know:
That metabolism is the sum of all the reactions in a cell or the body of an organism.
How the liver is involved in paying back off the oxygen debt (H).
Study Resources:
Study Resources (photosynthesis)
Study Resources (respiration)
Assessments (photosynthesis)
B8 End of Unit Test (Foundation)
Assessments (respiration)