4.3 Photosynthesis in Detail TEKS 4B, 9B - Biology

4.3 Photosynthesis in Detail

TEKS 4B, 9B

The student is expected to:

4B investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis of new molecules and 9B compare the reactants and products of photosynthesis and cellular respiration in terms of energy and matter

4.3 Photosynthesis in Detail

TEKS 4B, 9B

Photosynthesis occurs in the thylakoid membrane of the chloroplast

4.3 Photosynthesis in Detail

TEKS 4B, 9B

The first stage of photosynthesis captures and transfers energy.

? The light-dependent reactions include groups of molecules called photosystems.

4.3 Photosynthesis in Detail

? Photosystem II captures and transfers energy.

? chlorophyll absorbs energy from sunlight

? energized electrons enter electron transport chain

? water molecules are split

? oxygen is released as waste

? hydrogen ions are transported across thylakoid membrane

TEKS 4B, 9B

4.3 Photosynthesis in Detail

TEKS 4B, 9B

? Photosystem I captures energy and produces energycarrying molecules.

? chlorophyll absorbs energy from sunlight

? energized electrons are used to make NADPH

? NADPH is transferred to light-independent reactions (Calvin cycle)

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