The model below illustrates steps in the process of cellular respiration. Some arrows are solid, while some are dashed.

*Model shown in picture*

Students are discussing the model. Student A feels like the model is complete. Student B disagrees and thinks molecules are missing.

Which student is correct and why?

Question 1 options:

Student A is correct because the diagram shows the movement of all molecules and the inputs and outputs for all steps.


Both students are correct because the dashed lines represent the electron and hydrogen carrier molecules, but should be labeled as NADH and FADH2.


Student B is correct because major inputs are missing from the reactions.


Student B is correct because major outputs are missing from the reactions.