Scientists have recently devised a new six-kingdom classification of organisms. according to the cladogram for the six-kingdom system

Which of the following is a common response to cell signaling?

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.

What is the main fuel source for the work of the cell