C: Explore the factors that can affect the pathways and the rate of photosynthesis in plants
The following report is about the factors which can affect the pathways and the the rate of photosynthesis in plants. This report will cover what photosynthesis is , the factors which may affect photosynthesis in working poorly, light independant and dependant reaction. An investigation will be carried out which will include the factors that affect photosynthesis.
What is photosynthesis?
Photosynthesis is a process which occurs in plants when light energy needs to be transformed into chemical energy. 1. Oxygenic and anoxygenic photosynthesis are the two process which photosynthesis has. The most …show more content…
The energy is traveling through pigments until the it reaches the reaction center. To boost the electron to a high level the energy would transfer to p680. After the energy being transferred its then passed to an acceptor molecule which would replace an electron from water. O2 would be released due to the splitting of water.
2Light absorption in photosystem I
When the electron has reached photosystem I it is attached to a special pair of chlorophyll in the reaction center called p700. Light energy is then absorbed by pigments which are passed on to the reaction center , the electron which is in p700 is then boosted to a high energy level which is then transferred to a acceptor molecule. As the special pairs of electron is missing it is then replaced by a new one from photosystem II.
Energy levels are lost as the electron travels down the transport chain. Some of the energy which is lost is released into H+ ions from the stroma into the interior of the thylakoid. As the H+ ions flow through the gradient to reach to the stroma. Chemiosmosis occurs which is when the Atp synthase is driving the Atp production …show more content…
In the calvin cycle carbon atoms are used to make 3c sugars. As light dependant reaction takes place in the thylakoid membrane, the calvin cycle takes place in the stroma.
The calvin cycle is divided into 3 main sections:
The first stage is called carbon fixation it is when a CO2 and a five carbon acceptor molecule (ribulose 1,5 bisphosphate) is combined. Six carbon compound is made and is split into to two sets of three carbon compounds. RuBP carboxylase or rubisco is the enzyme which is used to catalyse the reaction.
This is the second stage of the calvin cycle , Atp and Nadph are used are used to convert the 3 phosphoglyceric acid molecules in to the 3 carbon sugar glyceraldehyde 3 phosphate. Nadph contributes electrons to reduce a three carbon molecule to make glyceraldehyde 3 phosphate.
The glyceraldehyde 3 phosphate either goes to make glucose or may be recycled to make more RuBP. The regeneration process requires Atp