Which molecule is paired with its correct role in protein synthesis?
a. nucleus - forms peptide bonds
b. ribosome - carries dna instructions
c. mrna - joins amino acids
d. trna - transfers amino acids

Why is it important that fibrin is insoluble in water?

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.

Which description provides the best objective summary of the article in the passage?