Marine animals are harmed by toxic chemicals and by

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

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.

All ova contain sex chromosomes corresponding to: x y xx xy