a liquid boils at 120°c until it all evaporates, leaving an empty container. what is most likely true about the liquid?
a: the liquid had two freezing points
b: the liquid was a mixture.
c: the liquid was a pure substance.
d: the liquid contained water.

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.

How do disease caused by bacteria and disease caused by viruses react to antibiotics

All eukaryotic cells contain small bodies called