Quiz 7 - Photosynthesis - Dec 9 Flashcards
What does photosynthesis mean?
light building
What is photosynthesis?
the process of turning light energy into chemical energy
Examples of photosynthetic organisms
plants, some protists and some bacteria
Autotroph definition
organisms that make their own energy
What organelle is needed for photosynthesis?
chloroplasts
Heterotroph definition
organisms that consume their energy
What is the photosynthesis balanced equation?
6CO2 + 6H2O (+ solar energy) = C6H12O6 + CO2 (+ ATP + NADPH)
What s chlorophyll?
The green pigment in plants that absorbs solar energy
What are stomata?
pores in leaves that allow the leaf cells to exchange gases
What gases do leaves release and take in?
CO2, O2, H2O
What is the singular of stomata?
stoma
What are guard cells?
cells around the stomata that control when they open and close to prevent moisture loss
When do guard cells open?
when they are swollen
What is a thylakoid?
a flattened membrane bound sac that contains chlorophyll
What are granum?
stacks of thylakoids
what is the stroma?
the fluid matrix in the chloroplast
What are the two reactions of photosynthesis?
Light dependent and light independent (Calvin cycle)
What are the inputs and outputs of the light dependent reactions?
Inputs: light energy and H2O
Outputs: O2
WHat are the inputs and outputs of the Calvin cycle?
Inputs: CO2
Outputs: C6H12O6
Where does the light dependent reactions happen?
in the thylakoid membrane
What are the 4 parts of the light dependent reactions?
- light energy is absorbed
- water is split
- NADPH and ATP are formed
- O2 is released
Where does the calving cycle happen/
in the stroma
What are factors of photosynthesis?
Temp, light intensity and CO2 concentration
What is the graph for temperature vs rate of reaction?
up then down after optimum temp
What is the graph for light intensity vs rate of reaction?
up then plateuas
What is the graph for CO2 concentration vs rate of reaction?reaction to
up then plateaus
What is chemosynthesis?
like photosynthesis ut with chemicals and for organisms that cant access light
