I believe the anwser you are looking for is the
Cell Membrane.
It is a substance that lets things in and out of the cell
Answer:
According to the expert panel, 200 nanometers is the smallest size for life as we know it
Explanation:
Photosynthesis and respiration work together by creating the energy and transporting it.
The process are similar because they both take something in, and let something else out.
The processes complement eachother by Respiration being able to take oxygen to the leaves, and the leaves using that oxygen to power their chemical reaction.
Good luck there friend!
The correct answer is Sedge