Electrons are excited in photosystem i. what do these electrons combine with in order to produce an energy-carrying molecule?

Below are the choices that can be found elsewhere:

a. ADP 

b. ATP 

c. glucose 

d. NADP+

The answer is d. NADP+ 
The electrons combine with NADP+ molecules to form NADPH molecules. The NADPH molecules then travel to the stroma of the chloroplast to carry out the Calvin cycle. The Calvin cycle then produces glucose, which is the energy carrying molecule. The glucose molecule is used in cellular respiration to make ATP, so the cell can harness the energy from the glucose molecule.

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.