Answer:
Sarcomere
Explanation:
A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments—actin and myosin—which are the active structures responsible for muscular contraction.
The first blank is osmosis, I'm not sure about the second
Answer:
bacteria, archaea, eukaryota
They Increase the surface area available for the absorption of nutrients
I had the same question and the answer was C OR A.
