¿Por que es importante el consumo de alimentos saludables no contaminados por bacterias para mantener una salud integral? Me pueden ayudar por favor

List two modern organisms that have pentameral symmetry

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin