A teacher describes a biological structure. It is made of a number of different cell types that are arranged in layers. The outer layer serves as a protective barrier; the inner layer serves as a cushion and connects it to other structures. Which type of structure is the teacher MOST LIKELY describing?

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.

if you listed your answers right then i believe your answer is b.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate