Which of the following is a possible function of a protein?
a. long-term energy storage
b. insulating organisms
c. storing genetic information
d. sending signals across the organism

(d). Sending signals across the organism

Explanation:

Proteins are one of the most important biomolecules that play different roles in organisms. Proteins are made up of polymerization of amino acids. There are some protein molecules that act as signaling molecules that transfer signals from one cell to another.

Insulin hormone, cytokines, and some other peptide hormones are examples of protein molecules that send signals across the organisms.

Thus, the correct answer is option). d.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.