What is the difference between intracellular signaling and intercellular signaling?

Communication or signaling between different cells is called intercellular signaling, and signaling or communication within a cell is called intracellular signaling

Explanation:

The binding of the signaling molecule or ligand can be divided into two types based on location their receptors. These signals molecule can bind to the cell surface receptors or intracellular receptors.

Intercellular signaling is signaling between cells. Membrane-bound vesicle transfer has an important this signaling in these signaling in humans and animals. examples of such signaling are hormone signaling.

When signals move from the cell surface to intracellular receptors this process intracellular signal. The receptors of these signaling include transcription factors that function to manage the gene expression.

the answer is:

carbon dioxide

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.