Why are sponges considered animals?

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now