Electrons Are Transferred from P680 to _____, Then to Cytochrome

Q15: In C₄ plants, CO₂ (as bicarbonate)

Q16: PSII oxidizes _.

Q17: How is ammonia toxic to many species?<br>I.

Q18: Why does rubisco make up about half

Q19: If carbon dioxide is used as a

Q21: Nitrogenase contains _, unusual electron carrier(s).<br>A) FeMo

Q22: Light-harvesting antennas gather photons and pass the

Q23: Electron transport through the cytochrome b₆f complex

Q24: In chloroplasts<br>A) water is oxidized and NAD

Q25: The active group of photosystem I is