14. Scientists and dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be
concluded from this evidence? *
A. Dinosaurs ate plants.
B. Dinosaurs were eaten by the mammals.
C. Dinosaurs lived on Earth before the mammals.
D. Dinosaurs and mammals lived at the same time.

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.