Photosystems

As the electrons travel from photosystem II down the first electron transport chain, their energy is used to…

• form oxygen, water, NADPH, and glucose.

• pump hydrogen ions into the stroma, producing a concentration gradient that will later be used by an enzyme to form ADP and phosphate.

• pump hydrogen ions into the thylakoid space, producing a concentration gradient that will later be used by ATP synthase to form ATP.

• create glucose directly.

Tags

NGSS.HS-LS1-5

_______ are clusters of proteins and chlorophyll in the thylakoid membrane.

• pigments

• Photosystems I and II

• electron carriers

Tags

NGSS.HS-LS1-5

Photosystems are clusters of chlorophyll and proteins.

• TRUE

• FALSE

High energy ___________form when pigments in photosystem II absorb light.

• electrons

• pigments

Tags

NGSS.HS-LS1-5

The light independent reactions begin when _____________ absorbs light.

• Photosystem I

• Photosystem II

Tags

NGSS.HS-LS1-5

Electrons from water molecules replace the ones lost by Photosystem II.

• TRUE

• FALSE

Where do the light-dependent process takes place?

• in the thylakoid membrane

• in the stroma

Tags

NGSS.HS-LS1-5

There are two photosystems; photosystem 2 and photosystem 1.

• True

• False

Photosystem II moves high energy electrons __________ to photosystem I.

• through the thylakoid membrane.

• through the stroma.

• through the electron transport chain (ETC).

• None of the above are correct.

The thylakoids, in the interior of the chloroplast, make up a membrane system.

• True

• false

Tags

NGSS.MS-LS1-2