Light dependent reactions Flashcards
There are two sets of reactions..
Light dependant reaction
Light indépendant reaction
Light dependant reaction requires
Light energy and Water
Light dependant reaction products
ATP, NADPH, Oxygen
Light Independent reaction requires
ATP, CO2, NADPH, RuBP
Light independent reaction products
PGAL (Also known as G3P)
In light dependant reactions, what is trapped and used to generate 2 high-energy compounds ____ & ____
Traps solar energy and produces ATP and NADPH
In light dependant reactions, the energy of ATP and the reducing power of NADPH are used to..
Reduce carbon dioxide and make glucose
The main purpose of the light dependant reaction is to..
Synthesize ATP and NADPH in the Stroma
The synthesization of ATP and NADPH in the Stroma releases..
Oxygen
Light energy splits..
Water molecule in the Thylakoid during the process of photosynthesis
The first process of light dependent reaction..
Light energy splits water in thylakoid
The second process of light dependent reaction..
PSI II accepts an electron from the water. Solar energy strikes the PSI II and the electron causing it to be “excited”.
The third process of light dependent reaction..
The electron reaches the electron accepter of PSI II and is passed down
The electron gets passed down a series of other molecules embedded in the thylakoid membrane known as..
Electron transport change
The forth process of light dependent reaction..
A small amount of energy is released and this pushes H from the Stroma, across the Thylakoid membrane and into the Thylakoid space
The fifth process of light dependent reaction..
H ion concentration becomes higher in the thylakoid creating a concentration gradient
The sixth process of light dependent reaction..
Light is absorbed by Photosystem I where the electron becomes excited and is passed to an electron acceptor
The seventh process of light dependent reaction..
The election is combined with NADP to form NADPH with the help of NADP reductase (enzyme)
When Hydrogen ions are forced from the Stroma to the Thylakoid space, they can’t diffuse back because..
The membrane is impermeable (not allowing fluid to pass) to these ions
ATP synthase allow..
Allows hydrogen ions to move down their gradient and try to reach the equilibrium
The energy is used to convert ADP + P –> ATP in a process called..
Chemiosmosis
