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Photosynthesis
Introduction to Photosynthesis
1. The relationship between photosynthesis and cellular respiration
2. The key stages of photosynthesis
The relationship between photosynthesis and respiration
The products of photosynthesis, glucose and oxygen, can be used as reactants
in respiration to synthesise ATP
The products of respiration, carbon dioxide and water, can then be used as
reactants in photosynthesis
Photosynthesis
Photosynthesis captures light energy to make glucose from carbon dioxide and
water.
Overall photosynthesis equation:
6CO_2_ + 6H_2_O + light energy = C_6_H_12_O_6_ + 6O_2_
Respiration
Cellular respiration breaks down respiratory substrates like glucose, releasing
energy that is temporarily stored in the form of ATP.
Overall respiration equation:
Photosynthesis 1
, C_6_H_12_O_6_ + 6O_2_ = 6CO_2_ + 6H_2_O + energy
Key stages of photosynthesis
There are 3 main stages in photosynthesis:
1. Capturing of light energy - this is don e by pigments such as chlorophyll
2. The light dependent reaction - this is when the light energy is converted
into chemical energy
3. The light independent reaction - This is when sugars and other organic
molecules are produced
Chloroplast Structure
1. The function of Chloroplasts
2. The structure of chloroplasts
3. The role of photosynthetic pigments in chloroplasts
The function of chloroplasts
Chloroplasts are the site of photosynthesis. They are organelles found in some
algae and plant cells. In plants, they are mainly found in the mesophyll tissues
of leaves
The main roles of chloroplasts are:
to absorb light energy to drive photosynthesis
To convert light energy into chemical energy
The structure of chloroplasts
Chloroplasts are surrounded by double membrane.
Photosynthesis 2
Photosynthesis
Introduction to Photosynthesis
1. The relationship between photosynthesis and cellular respiration
2. The key stages of photosynthesis
The relationship between photosynthesis and respiration
The products of photosynthesis, glucose and oxygen, can be used as reactants
in respiration to synthesise ATP
The products of respiration, carbon dioxide and water, can then be used as
reactants in photosynthesis
Photosynthesis
Photosynthesis captures light energy to make glucose from carbon dioxide and
water.
Overall photosynthesis equation:
6CO_2_ + 6H_2_O + light energy = C_6_H_12_O_6_ + 6O_2_
Respiration
Cellular respiration breaks down respiratory substrates like glucose, releasing
energy that is temporarily stored in the form of ATP.
Overall respiration equation:
Photosynthesis 1
, C_6_H_12_O_6_ + 6O_2_ = 6CO_2_ + 6H_2_O + energy
Key stages of photosynthesis
There are 3 main stages in photosynthesis:
1. Capturing of light energy - this is don e by pigments such as chlorophyll
2. The light dependent reaction - this is when the light energy is converted
into chemical energy
3. The light independent reaction - This is when sugars and other organic
molecules are produced
Chloroplast Structure
1. The function of Chloroplasts
2. The structure of chloroplasts
3. The role of photosynthetic pigments in chloroplasts
The function of chloroplasts
Chloroplasts are the site of photosynthesis. They are organelles found in some
algae and plant cells. In plants, they are mainly found in the mesophyll tissues
of leaves
The main roles of chloroplasts are:
to absorb light energy to drive photosynthesis
To convert light energy into chemical energy
The structure of chloroplasts
Chloroplasts are surrounded by double membrane.
Photosynthesis 2
