All High School Biology Resources
Example Questions
Example Question #1 :Understanding Light Reactions
In the given chemical process, what doesrepresent?
Carbon hydroxide
Chlorophyll
Carbonated water
Carbohydrate
Carbohydrate
Carbohydrates are formed from carbon chains with a single oxygen group (either an aldehyde or a ketone). Carbohydrates have the general empirical formula. This formula can be used to designate a nonspecific carbohydrate molecule.
光的转换e描述的过程nergy to chemical energy through photosynthesis. Chlorophyll serves as a functional pigment in this process, but is not involved in the net reaction. Carbonated water is formed from dissolved carbon dioxide in water, and is actually a solution of the two compounds. Carbon hydroxide is a misnomer, and does not refer to a real compound.
Example Question #1 :Photosynthesis
During the light-dependent reaction, the electron in__________is__________before the electron in_________.
photosystem II. . . oxidized. . . photosystem III
photosystem I. . . removed. . . photosystem III
photosystem I. . . excited. . . photosystem II
photosystem II. . . excited. . . photosystem I
photosystem II. . . excited. . . photosystem I
Contrary to their assigned numbers, the electron in photosystem II is excited before the electron in photosystem I. Their numbers are a reflection of the order in which they were discovered.