Chapter 6 Flashcards
What is photosynthesis
Production of glucose and oxygen from carbon dioxide , water and sunlight
What is the difference between a producer and consumer, autotroph and heterotroph
Autotroph/ producer- organisms that make their own food without consuming organic molecules for energy or carbon
Heterotrophs/ consumer- organisms that must consume organic molecules for energy carbon or both to survive
Where are chloroplasts
Located in each specialized cell inside leaves stomata
Where are stomata and what do they allow in and out of the leaf
Lower leaf surface
Allows gas exchange (co2 in 02 out)
What are the compartments of a chloroplasts and what separates them?
3 compartments
Inner membrane - thylakoids
Thylakoids membrane - chlorophyll and many other enzymes
Stroma -
What are the two stages of photosynthesis and where do they occur
Light dependent reactions - thylakoids
The Calvin cycle- stroma
What are the inputs and outputs of the two stages, where does each go, and what function does each input and output serve?
Inputs: h2o light adp nadp
Outputs: O2 atp nadph
h2o electron source Light energy source O2 waste product from splitting water Nadph electron shuttle to the dark reactions ATP energy source to the dark reactions
What does it mean that carbon is fixed? Which enzyme does this job in a C3 plant?
CO2 is used directly from the air into the Calvin cycle
What enzyme fixes carbon in a C4 plant
RuBisCo
Why does chlorophyll appear green and carotenoids yellow orange to us?
Chlorophyll absorbs light energy in the violet blue and red areas and reflects green areas
Carotenoids absorb in other areas of the spectrum to harvest more energy or protect chlorophyll
What happens to light that strikes an object
The light is absorbed and converted to energy or light can be transmitted by the object allowing us to see the object
What is the function of photosynthesis pigments
To harness the energy of sunlight
What are photosystem 1 and photosystem 2
The photosystem collects the pigments molecules and makes ATP and uses electrons from light. The photosystem 2 is the primary electron acceptor. Located in the thylakoid membrane. The photosystem gains its electron from splitting H2O
What is reaction center
The place where the electrons end up in the photosystem
How is the ATP generated during the light reactions
Electron transport chain with ATP
