The correct answers are:
2) Peptide bonds form from nucleophilic attack by an electron pair on an alpha - amino nitrogen atom on an alpha - carboxyl carbon atom of another amino acid and
4) Peptides are polymers of amino acids.
A peptide bond is an amide type of covalent chemical bond. It is formed between two amino acids: C1 (carbon end) of one alpha-amino acid and N2 (nitrogen end) of another. Peptide bonds are the basis for the formation of a peptide chain and consequently protein. Formation of peptide bond is a condensation process, meaning that when two amino acids combine and link, water molecule is released and dipeptide is a product of that reaction.
Answer: 3rd line of defense, specific defense
Explanation:
Answer:
1. tendon connective
2. bone marrow
3. organflexible
4. involuntary muscle groups
5. cytoplasm
6. catilage
Explanation:
<span>Post-medieval people did not take the best care of their teeth. Poor diet combined with poor hygiene practices lead to tooth decay and tooth loss. Many people of the time were wholly unaware that poor oral hygiene can lead to other health problems so taking care of them was not a priority.</span>