Amino Acids
I do believe you are asking about a sarcomere, units of repeating bands that make up the fibers (myofibrils) of a striated muscle.
amino acids
units that make up proteins are ribsomes. Answer: Ribsomes
No, keratin is a polymer, not a monomer. It is a protein made up of long chains of repeating amino acid units.
sacomeres are a single unit of a muscle fiber multiple sacomeres make up a myofibril
expressed
expressed
DNA is not made up out of 2, but 4 repeating units. These repeating units, nucleotides, being Adenine, Thymine, Guanine, and Cytosine.
Strictly speaking the answer is "mers" - repeating units. Polymers are made from monomers though and this is an acceptable answer.
In DNA, the backbone is made up of alternating deoxyribose sugar and phosphate groups. In RNA, the backbone is made up of alternating ribose sugar and phosphate groups.
Activated.
Activated.