Response curves of leaf photosynthesis to environmental factors DO NOT have whic

Question

Response curves of leaf photosynthesis to environmental factors DO NOT have which of these characteristics?

A. Saturation where the photosynthesis apparatus is limited by the number of enzymes, proteins and structures it has. No more CO2 or light will make photosynthesis faster due to a lack of available machinery.

B. An infinite amount of substrate (CO2 or light) leads to an infinite photosynthetic rate.

C. Temperature affects all processes in photosynthesis to environmental responses including: changing ratios of photorespiration to carboxylation, effects on the rates of enzyme function, changing membrane characteristics and changing solubility of gases in water.

D. Light and CO2 compensation points, where An is zero due to Vc balancing Vo and R. In other words, the compensation point is a minimum amount of light or CO2 below which photosynthesis is net negative or mostly respiring CO2 out of the leaf!

A. Saturation where the photosynthesis apparatus is limited by the number of enzymes, proteins and structures it has. No more CO2 or light will make photosynthesis faster due to a lack of available machinery.

B. An infinite amount of substrate (CO2 or light) leads to an infinite photosynthetic rate.

C. Temperature affects all processes in photosynthesis to environmental responses including: changing ratios of photorespiration to carboxylation, effects on the rates of enzyme function, changing membrane characteristics and changing solubility of gases in water.

D. Light and CO2 compensation points, where An is zero due to Vc balancing Vo and R. In other words, the compensation point is a minimum amount of light or CO2 below which photosynthesis is net negative or mostly respiring CO2 out of the leaf!

Explanation / Answer

B. An infinite amount of substrate (CO2 or light) leads to an infinite photosynthetic rate.

CO2 or light are not only substrates but also water for photosynthesis. If one or two factors abundant, there will be another factor, which slows the reaction.   

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.