Answer:
amino groups
amino acids
R groups
Explanation:
I think these are right.
Because a polypeptide chain is polymer of amino acids that are linked together so that mean a polypeptide chain is protien.
I think the correct answer is the first option. The key features of chordates would be notochord, dorsal tubular nerve cord, pharyngeal pouches, and a tail. These features appears in some period of their lives. They are deutorostomes where the anus would be formed first before the mouth.
Answer:
1. A hypotonic solution has less solute and more water potential.
2. If two solutions are of the same concentration they have the same water potential and are considered isotonic.
3. A hypertonic solution has lower water potential and more solute.
