What is the difference between a tissue and an organ system? what is the difference between a tissue and an organ system? the tissue level of organization is more inclusive than the organ system level. an organ system includes tissues. a tissue cannot exist unless it is a component of an organ system, whereas an organ system can exist independently of tissues. tissues are not composed of cells; organ systems are composed of cells?

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.