Answer:
React on cell surfaces, catalyze reactions.
Answer:
about nine mouths hope this helps
Explanation:
Answer:
what do you want to talk about?
Endocrine system is involved in this
Okay, biology isn't exactly my strongest subject (it never has been), but I'm pretty sure the answer is nucleotides. DNA is made up of nucleotides. Each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. There are four different nitrogen bases: adenine (A), thymine (T), guanine (G), and cytosine (C). A always pairs with T, and G always pairs with C.