AS BIOLOGY
PHOTOSYNTHESIS
FACILITATOR: SRC
Scope of topic
• explain how photosynthesis transfers energy from light to
carbohydrate molecules
• describe how the structure of a chloroplast is related to its
functions
• describe the roles of chloroplast pigments, and interpret
absorption spectra and action spectra
• describe how to use chromatography to separate chloroplast
pigments and calculate Rf values
• describe the reactions of the light-dependent stage of
photosynthesis, including cyclic photophosphorylation and noncyclic photophosphorylation
Scope of topic
• describe the light-independent stage of photosynthesis
• explain the main limiting factors for photosynthesis, and
interpret graphs showing the effects of these on the rate of
photosynthesis
• describe how to investigate the effects of limiting factors on
the rate of photosynthesis using aquatic plants
• describe how to investigate the effect of light intensity and
light wavelengths on a chloroplast suspension, using a redox
indicatoR
•
In Chapter 12 you learnt how all organisms use ATP as their
energy currency.
•
They make ATP by using the chemical potential energy
contained in glucose and other organic molecules to join a
phosphate group to ADP.
•
This is done by respiration, which is a series of
enzymecontrolled reactions that take place in every living cell.
•
In this chapter you will find out how the glucose that is used in
respiration is produced.
•
It is done by photosynthesis, in which energy in sunlight is
transferred to carbohydrates such as glucose
An outline of photosynthesis
Structure and function of chloroplasts