Which of the following statements are correct?
A. A tripeptide had two peptide bonds.
B. A pentapeptide contains five amino acids
C. Nucleotide is a product of base and sugar
D. In cellulose, glycosidic linkages are present

A. A tripeptide had two peptide bonds.
B. A pentapeptide contains five amino acids
C. A nucleotide is composed of three components: Phosphate group, a sugar with five carbons, and a nitrogenous base.
D.  In cellulose, $\beta$ - Glycosidic linkages are present.