photosynthesis - releases O2, takes in CO2, occurs in plants, protists, and some bacteria
}}6CO2 + 6H2O → C6H12O6 + 6O2}}
cellular respiration - releases CO2, takes in O2, occurs in humans and animals
}}6CO2 + C6H12O6 → 6H2O + 6CO2}}
photosynthesis contains many reactions that typically occur in 2 stages.
stage 1: light-dependant reactions: converts light energy to chemical energy, makes ATP
stage 2: light-independent reactions: runs on energy supplied by NADPH + ATP
light-dependent reactions are executed by molecules located in a thylakoid membrane.
light-independent reactions run in stroma
blue and red lights fuel photosynthesis most effectively.
pigments have a light-trapping region, a carbon chain or ring that have single bonds alternating with double bonds, so electrons can move freely amongst the atoms
wavelengths that aren’t absorbed are reflected, and that reflected light makes our perception of color. the most common instance of this is chlorophyll.