Photosynthesis (Biology 010) Flashcards
(22 cards)
What is the purpose of photosynthesis
To produce food in the form of glucose using light
What are the reactants of photosynthesis
Carbon dioxide and water
What are the products of photosynthesis
Glucose, water and oxygen
What are the two processes of photosynthesis
Light independent and light dependent processes
What is the pigment used to absorb light for photosynthesis
Chlorophyll
What is the organelle that consists of chlorophyll
Chloroplast
What is the structure of a chloroplast
Outer/Inner membrane, thylakoid, thylakoid space, granum and stroma
What is a thylakoid
A small sub-unit of a granum
What is a granum
A stack of thylakoids
The stroma is similar to what?
The cytoplasm
What kind of light does chlorophyll absorb and what is reflected
Absorbs red and violet light, in which green light is reflected
What is the light dependent phase (*)
Absorbed light is used to split water into hydrogen and carbon and electrons in which carries the hydrogen to the light independent stage
What is the process called of light splitting water
Photolysis
In-depth explanation of the light dependent phase
Hydrogen creates a proton gradient in which ATP synthase creates ATP (energy). Those two electron are passed through the electron transfer chain generating more ATP (energy). This will also produce NADPH as the electrons and hydrogen are transferred to the NADPH.
Where in the chloroplast is NADPH and ATP produced
In the grana
What is the light independent phase
Forming glucose using hydrogen, NADPH and carbon dioxide
What are the three stages of the light independent phase
Carbon fixation, reduction and regeneration
What happens in carbon fixation
When carbon dioxide is fixed into an organic molecule
What happens in reduction
NADPH and ATP (energy) is used to reduce the fixed carbon into glucose
What happens in regeneration
The carbon dioxide acceptor (RuBP) regenerates itself in which cycles back to the first stage
How many Calvin cycles is needed to produce glucose
Two
What does glucose have to turn into and why
Because glucose is soluble, glucose needs to turn into a insoluble starch because glucose can upset the osmotic balance as well as for storage energy
