why are amino acids called “amino acids”?<br/>they are single molecules

that contain both an amine group and a carboxylic acid group
b. they are subunits of macromolecules that acts as both strong acids and strong bases in solution
c. they are acidic and were first discovered by an investigator called j. aminov
d. they are subunits of macromolecules that act as strong acids
2.  which of the following macromolecules are made of amino acids
a. proteins
b. complex carbohydrates
c. nucleic acids
d. lipids
3. what level of protein structure is associated with the sequence of amino acids?
a. primary
b. secondary
c. tertiary
d. quaternary
4. which of the following carbohydrates is used to store energy in animal cells?
a. cellulose
b. starch
c. hemi-cellulose
d. glycogen
5. how are most carbohydrates used in the human body?
a. used as building blocks for proteins
b. used as catalysts for reactions in cells
c. used as a source of energy
d. used as building blocks for lipids
e. not necessary for regular bodily function
(can be one than one for the answer)