"what is the difference between nucleotides and nucleosides"?

Answer 1

To add to the previous answer:

Nucleosides differ from nucleotides by having a hydroxyl group attached to carbon number 5 (the one that isn't in the ring) of the ribose, rather than one or more phosphate groups.

the rx can go the other way too:
nucleosides are the product when nucleotides are broken down by the enzyme nucleotidase. You get: Nucleotide (nucleotidase) = nucleoside + phosphate The nucleosides are then further broken down during digestion.

Answer 2

Nucleotides are a Nitrogen base +sugar+phospate

Nucleosides are a Nitrogen base + sugar

Nucleosides come first, phospate is added to them to create a Nucleotide.

I remember the difference because Nucleoside has an "s" in it and sugar stars with an "s". Nucleotide has a "t" and so doesn't the word phosphate. Silly I know, but it works for me :)

Answer 3

Nucleotides and nucleosides have different sugars. Nucleotides have deoxyribose, while nucleosides have ribose.