12. Which two processes are involved in mitotic cell division?
A) nuclear duplication and cytoplasmic division
B) nuclear duplication and cytoplasmic duplication
C) spermatogenesis and cytoplasmic duplication
D) oogenesis and cytoplasmic division

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.

Will ! a cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. assume the cell’s membrane is permeable to water, but not permeable to the sucrose. where will the water diffuse? explain.

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