Which electronegative element/compound do chemosynthetic bacteria use drive the electron transport chain

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?