3. What is feedback in a system? the balance of competing factors in a system.
the regulation of a system by the output.
the definition of what is part of the system and what isn't.
the behaviors of the different components of a system

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

The carrier molecules of the electron transport system are located in the