Answer:
Something called side groups
Explanation:
The side groups are what make each amino acid different from the others. Of the 20 side groups used to make proteins, there are two main groups: polar and non-polar. These names refer to the way the side groups, sometimes called "R" groups, interact with the environment.
The digestive system contains all four major tissue types, epithelial<span>, connective, muscle and nervous. e</span>pithelial<span> tissue lines the entire length the digestive tract. it is made up of many different types of cells, including goblet cells that secrete mucus.</span>
Proteins that are postsynaptic get neurotransmitters given by the presynaptic proteins.
Enzymes act as a catalyst in digestion process. It fastens the reaction and lowers it time. Like, if it will absent, digestion process which normally takes 1 hour, will take approx. few weeks. So, enzymes are so important.
