What is the major structural difference between the upper and lower epidermis in plant cells

What is the major structural difference between the upper and lower epidermis in plant cells?

This solution explains how plants are able to bypass cyanide poisoning of the electron transport chain.

The presence of low levels of cyanide arrests cellular respiration in animals, yet has little or no effect on plants. Explain how plants are able to overcome the effect of cyanide poisoning.

Enzyme Kinetics

In a lab on enzyme kinetics the effect of enzyme concentration on enzyme activity and the effect of substrate concentration on enzyme activity were determined. If you changed the temperature,what do you think would happen to the enzyme reaction rate? Could you also explain to me what is meant by the term Q10?

Enzyme Kinetics

If you change the concentration of enzyme in a reaction, does the Km change?

CO2 saturation point

At the CO2 saturation point, is light supply the major factor limiting photosynthesis? How could you test this?