Which are characteristics of a eukaryotic cell? A. single cellular, has nucleus. B. Multicellular, has nucleus.
C. single cellular, has no nucleus.
D. Multicellular, has no nucleus.

A eukaryotic cell is much more complex than a prokaryotic cell. Eukaryotic cells usually make up more complex organisms and have organelles such as endoplasmic reticulum, Golgi apparatus, mitochondria, a nucleus, and lysosomes. A prokaryotic cell only has circular chromosomes and is much smaller than a eukaryotic cell. Most single celled organisms are prokaryotes.

Explanation:

i it is d i hope it

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.