If you wanted to observe a living organism-an amoeba, for example-which type of microscope would you use? A. electron microscope
B. light microscope
C. either one
D. niether one

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

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.

Agriffin is a mythical creature that appears in many stories. it has the head of an eagle and the body of a lion. what role if any could the griffin have in the science of biology