A, chloroplast and cell wall.
This is because chloroplasts are what plant cells use to do the process of photosynthesis, which animals do not need. Plant cells also have cell walls.
"<span> You would not be able to pull your forearm up toward your shoulder" is the best option from the list, but it should be noted that there would be other issues as well. </span>
The reaction is most likely to slow down or not occur as the enzymes will be denatured and their active site will not be able to fit onto the substrate of the molecule.
