Answer:
a-glucose
b-carbon dioxide (or water)
c-water (or carbon dioxide)
d-ATP
e-ADP
f-amino acid
g-protein
Explanation:
a-glucose
Photosynthesis:
Light + Carbon dioxide + Water => Glucose + Oxygen
Cellular Respiration:
Oxygen + Glucose => Water + Carbon Dioxide + ATP
Photosynthesis produces glucose and cellular respiration uses glucose.
b/c - water/carbon dioxide
Cellular Respiration:
Oxygen + Glucose => Water + Carbon Dioxide + ATP
In the lower diagram, cellular respiration has three products (arrows pointing away). Two products (b/c) lead to nothing, as we can see in the diagram above.
d-ATP
Cellular Respiration:
Oxygen + Glucose => Water + Carbon Dioxide + ATP
ATP is one of the products of cellular respiration. In the diagram above, ATP is connected to ADP, which joins back to Cellular Respiration.
d) is connected to box e), which joins back to Cellular Respiration.
e-ADP
In the diagram above, ATP becomes ADP, then is transferred back to mitochondrion (where cell. resp. happens).
f-amino acid
Amino acid does not get connected to anything else except for protein at the end in the diagram above. The caption labelled (3) says "ATP provides energy for various chemical reactions including protein building." Since amino acids form proteins according to the diagram above, the diagram below makes the arrow joining f) and g) touch box d).
g-protein
Amino acids form proteins. Box f), which we have decided is amino acid, leads to box g).
