Consider the nucleic acid molecule shown here. you can tell from this illustration that the molecule
a) may be either dna or rna.
b) is rna and it contains sugar ribose.
c) is dna and it contains the sugar ribose.
d) is dna and it contains the sugar deoxyribose.

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.