PHOTOSYNTHESIS

Photorespiration

________: is the oxidation of ROBP resulting in a loss of energy and carbon for the plant.

Chloroplasts

________: the specific sites of photosynthesis in plant cells they include the stroma (dense fluid filled area), thylakoids (network of membrane sacs) and chlorophyll (the light absorbing pigment that drives photosynthesis and makes plants green)

Heterotrophs

________: live on compounds made by other organisms- making them consumers.

C4 plants

Alternatives mechanisms of carbon fixation have evolved in hot arid climates. ________ have two strategies to combat photorespiration: 1. structural strategy: the two stages of photosynthesis are split among two different cells.

Photosystems

Absorption spectrums and action spectrums: show a pigments light absorption vs wavelength and its effectiveness respectively /________: certain groups of pigment molecules in the thylakoid membrane.

Stomata

________: tiny pores in which CO2 enters and O2 and water vapor leaves.

Calvin cycle

________: Occurs in the stroma, where CO2 is incorporated into organic molecules in carbon fixation (does not require light)

C3 plants

________ struggle in hot climates because they have to keep their stomata closed to conserve water, causing no CO2 uptake.

Alternative modernisms of carbon fixation

________ have evolved in hot, arid climates.

Pigments

________: substances that absorb light.

Photosynthesis converts

________ light energy to chemical energy of food.

Different pigments

________ absorb light at different wave lengths.

Alternatives mechanisms of carbon fixation

________ have evolved in hot arid climates.