What is one way that the rna differs from dna

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

Draw two cyclic constitutional isomers of cis-1

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule