If plants evolved to use H₂S instead of H₂O to replenish the electrons in chlorophyll during photosynthesis, how would this affect humans? A) We would not be able to carry out fermentation. B) We would not be able to carry out cellular respiration. C) We would not have sugar to eat. D) It would have no effect.

Question

Quizplus · Accepted Answer

If plants used sulfur (S) instead of oxygen (O) in photosynthesis, they would produce compounds other than oxygen as a byproduct. This would directly impact our ability to carry out cellular respiration, which relies on oxygen to produce ATP, the energy currency of the cell.

If Plants Evolved to Use H2S Instead of H2O to Replenish

If Plants Evolved to Use H₂S Instead of H₂O to Replenish