Overview Of Photosynthesis Flashcards
Where does photosynthesis take place
Chloroplasts
How are leaves adapted to bring together the three raw materials of photosynthesis (water, co2 and light) and remove its products (oxygen and glucose
A large SA that absorbs as much sun light as possible
An arrangement of leaves on the plant that minimises overlapping and so avoids the shadowing of one leaf by another
Thin, as most light is absorbed in the first few micrometers of the lead and the diffusion distance for gases is kept short
A transparent cuticle and epidermis that let light through to the photosynthetic mesophyll cells beneath
Long, narrow upper mesophyll cells packed with chloroplasts that collect sunlight
Numerous stomata for gaseous exchange so that all mesophyll cells are only a short diffusion pathway from one
Stomata that open and close in response to changes in light
Many air spaces in the lower mesophyll layer to allow rapid diffusion in the gas phase of carbon dioxide and oxygen
A network of xylem that brings water to the leaf cells, and phloem that carries away the sugars produced during photosynthesis
What’s the overall equation of photosynthesis and the word equation
6co2 + 6h2O —-> C6H12O6 + 6O2
Carbon dioxide + water —> glucose and oxygen
What are chloroplasts surrounded by
A double membrane
What is the grana
Stacks up to 100 disc structures called thylakoids where the light depend stage of photosynthesis takes place
What’s within the thylakoids
The photosynthetic pigment called chlorophyll
How are the grana linked together
By bits of thylakoid membrane called lamellae
What is the stroma? And what takes place there?
A fluid filled matrix
Where the light independent reaction takes place
