Biochemistry C785 WGU module 2 questions
and answers 2026\2027 A+ Grade
amino group
- correct answer Consists of hydrogen and nitrogen atoms (-NH3+)
carboxyl group
- correct answer A -COOH group, found in organic acids.
R group
- correct answer a functional group that defines a particular amino acid that makes it a specific protein
(20 amino acids) aka side chain
alpha carbon
- correct answer the central carbon atom of each amino acid
amino acid backbone
- correct answer The structure comprised of the amino group, carboxyl group with a central alpha
carbon atom.
Hydrophobic
- correct answer non polar, afraid of water
polar
- correct answer Amino acid Molecule with partial charges. Mixes with water.
charged
- correct answer Amino acid has a positive or negative charge
, Polypeptide
- correct answer A single protein chain formed by amino acids bonded together
peptide bond
- correct answer The chemical bond that forms between the carboxyl group of one amino acid and the
amino group of another amino acid by dehydration ( In which a water molecule is removed, C-N bond)
Hydrolysis
- correct answer Peptide bonds can be broken by this...A chemical process that splits a molecule by
adding water. (this happened frequently in the stomach when proteins begin to be digested into their
amino acids)
Residue
- correct answer Remaining portion of amino acids after linked by peptide bonds ( how R groups get
their name)
N-terminus
- correct answer the end of a polypeptide or protein that has a free amino group ( usually on the left)
C-terminus
- correct answer the end of a polypeptide or protein that has a free carboxyl group ( usually on the right)
primary structure
- correct answer sequence of amino acids in a polypeptide aka amino acid chain
secondary structure
- correct answer Shape formed by hydrogen bonding of amino acid back bone- usually an alpha helix or
beta sheet
tertiary structure
- correct answer The third level of protein structure; the overall, three-dimensional shape of a
polypeptide due to interactions of the R groups of the amino acids making up the chain. Complex
folding- critical to proper functioning
and answers 2026\2027 A+ Grade
amino group
- correct answer Consists of hydrogen and nitrogen atoms (-NH3+)
carboxyl group
- correct answer A -COOH group, found in organic acids.
R group
- correct answer a functional group that defines a particular amino acid that makes it a specific protein
(20 amino acids) aka side chain
alpha carbon
- correct answer the central carbon atom of each amino acid
amino acid backbone
- correct answer The structure comprised of the amino group, carboxyl group with a central alpha
carbon atom.
Hydrophobic
- correct answer non polar, afraid of water
polar
- correct answer Amino acid Molecule with partial charges. Mixes with water.
charged
- correct answer Amino acid has a positive or negative charge
, Polypeptide
- correct answer A single protein chain formed by amino acids bonded together
peptide bond
- correct answer The chemical bond that forms between the carboxyl group of one amino acid and the
amino group of another amino acid by dehydration ( In which a water molecule is removed, C-N bond)
Hydrolysis
- correct answer Peptide bonds can be broken by this...A chemical process that splits a molecule by
adding water. (this happened frequently in the stomach when proteins begin to be digested into their
amino acids)
Residue
- correct answer Remaining portion of amino acids after linked by peptide bonds ( how R groups get
their name)
N-terminus
- correct answer the end of a polypeptide or protein that has a free amino group ( usually on the left)
C-terminus
- correct answer the end of a polypeptide or protein that has a free carboxyl group ( usually on the right)
primary structure
- correct answer sequence of amino acids in a polypeptide aka amino acid chain
secondary structure
- correct answer Shape formed by hydrogen bonding of amino acid back bone- usually an alpha helix or
beta sheet
tertiary structure
- correct answer The third level of protein structure; the overall, three-dimensional shape of a
polypeptide due to interactions of the R groups of the amino acids making up the chain. Complex
folding- critical to proper functioning
