Make Observations Describe the system in each image by filling out the table below. System:
The Different Parts that Make Up the System:
How the Different Parts Work Together:

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.

Name a brittle metal , which is used to galvanize iron