True or false: the sequence of nucleotides in dna codes for proteins and is key to cell function and life. 13. true or false: during differentiation all parts of the dna is activated, not just the genes 14. true or false: all organisms begin as undifferentiated masses of cells (stem cells)

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?