Which statement is part of the cell theory?
a. cells are composed of organic molecules.
b. cells have dna as their genetic material.
c. cells have cytoplasm surrounded by a membrane.
d. cells come from pre-existing 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.

Some of the money that people deposit into a bank eventually becomes a interjection into the economy when the bank

Ruby is conducting an investigation. an advantage of her design is that she can use a large range of variables, with that she can not be sure that one variable is the cause of another. what kind of investigation is ruby most likely conducting?