Photosynthesis requires an input of energy, while respiration releases energy. Consider a growing tropical rainforest. This rainforest has a much higher rate of plant biomass formation than its respiration rate. Does the rainforest have a higher input of energy or output? A. Input (There is more energy being input through photosynthesis than lost through respiration)

B. Output (There is more energy lost through respiration than gained through photosynthesis)

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.