Photosynthesis Quiz Practice

Photosynthesis

The conversion of light energy to chemical energy

Autotrophs

Organisms that produce their own food

Heterotrophs

Organisms unable to make their own food so they live off of other organisms

Cloroplasts

organelle for the location of photosynthesis

Stomata

pores in leaves that allow CO2 and O2 out

Stroma

aqueous internal fluid

Thylakoids

form stacks known as grana

Chlorophyll

green pigment in thylakoid membranes

Photosynthesis formula

light + 6CO2 + 6H20 → C6H1206 + 6O2

Redox Reaction

reaction involving complete or partial transfer of one or more electrons from reactant to another

What happens in photosynthesis

the electrons are transferred with H+ (from split H20) to CO2 reducing it to sugar

Chlorophyll a

blue green pigment involved in the light reactions

Chlorophyll b

yellow green accessory pigment

Carotenoids

yellow orange pigment that broadens the spectrum of color and drives photosynthesis

light reactions

occurs in the thylakoid membrane in the photo systems and converts solar energy into chemical energy

forms of chemical energy

two forms: NADPH and ATP

Water splitting

provides a source of electrons and protons (H+), releases O2 as a bi-product

what absorbs light

chlorophyll

Steps of PSI

Electrons get excited, go down a transport chain, turn in NADP+

Steps of PSII

Electrons go to ground state, transferred to a primary acceptor and becomes P680, H20 is split, goes to PSI via electrin transport chain