1st and 4th one. 3 could be possible not completely sure its been awhile since i took the class. but the other 2 are impossible.
Answer:
Peptide bonds and Amino Acids
Explanation:
Primary structure. The primary structure of a protein refers to the sequence of amino acids in the polypeptide chain. The primary structure is held together by peptide bonds that are made during the process of protein biosynthesis.
Used by people is the answer. :-)
I’m pretty sure it’s nanoscopic animal since nanospoic means extremely small and animal is another way of saying livestock so it’s nanoscopic animal or animals :) (I hope this helps you in any way)
In general, more complex animals are More likely to likely have a digestive tract than to have a gastrovascular cavity
Since it is really unlikely to have a set of digestive system if you are only a single cell organism
