Unit 3-3 Photosynthesis

The principal pigment of green plants is known as ________________.

chlorophyll does not absorb light well in the ____________ region of the spectrum, but instead reflects it. That's why most leaves are green.

In plants, photosynthesis takes place inside __________________.

An electron carrier is a compound that can accept a pair of high-energy electrons and transfer them, along with most of their energy, to another molecule. One of these carrier molecules is a compound known as ________________

The conversion of NADP+ into ______________ is one way in which some of the energy of sunlight can be trapped in chemical form.

Photosynthesis uses the energy of sunlight to convert_______________________ (low-energy reactants) into high-energy sugars and oxygen (products). P

The first set of photosynthesis is known as the_______________reactions because they require the direct involvement of light and light-absorbing pigments.

The light-dependent reactions take place in _________________ membranes and use energy from sunlight to add a third phosphate to ADP to make ATP.

Light-dependent reactions depend on _______________, while light-independent reactions may occur in the dark.

During the light-independent reactions, the ATP and NADPH molecules produced in the light-dependent reactions are used to build high-energy sugars from ________________.

____________ absorb sunlight and generate high-energy electrons that are then passed to a series electron carriers embedded in the membrane.

_______________ is a series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions.

the negatively-charged electrons move to the outside of the membrane while the positively-charged ___________ are released inside,

Energy from the electrons is used by the proteins in the chain to pump still more H+ ions from the ___________ inside the thylakoid sac.

Pigments in photosystem I use energy from ____________ to reenergize these electrons and pass them to other carriers and eventually to the electron carrier NADP+.