Question

Which pathway describes the flow of electrons in the chloroplast?

A. Water-> photosystem II -> electron transport chain -> NADPH -> glyceraldehyde-3-phosphate
B. Water -> NADPH -> electron transport chain -> chlorophyll -> ATP
C. CO2-> Calvin cycle -> glyceraldehyde-3-P -> starch
D. Water -> photosystem I -> electron transport chain -> photosystem II -> electron transport chain -> ATP -> CO2

Answer 1

The flow of electrons in the chloroplast is described by pathway A: Water -> photosystem II -> electron transport chain -> NADPH -> glyceraldehyde-3-phosphate.

Step-by-step explanation:

The flow of electrons in the chloroplast is described by pathway A, which is Water -> photosystem II -> electron transport chain -> NADPH -> glyceraldehyde-3-phosphate. In this pathway, light energy is used to excite electrons in photosystem II. These electrons are then transferred through an electron transport chain, resulting in the production of NADPH and ATP, which are used in the Calvin cycle to produce glyceraldehyde-3-phosphate.