Biochemistry WGU OA 2023 Questions With Answers

Biochemistr
y WGU OA
2023
Questions
With
Answers

Biochemistry WGU OA 2023
Amino Acid backbone consists of Ans – 1. amino
group

2. carboxyl
   group
3. alpha
   carbon
4. R
   group
   Amino group: looks likes/consists of Ans – NH3+ Carboxyl group looks
   like/consists of Ans – cooAlpha carbon looks like/consists of Ans – CH
   The three Amino acid categories Ans – 1. hydrophobic
   (nonpolar)
   2.
   polar
   3.
   charged
   Hydrophobic Amino Acids Ans – non
   polar
   afraid of
   h20
   usually in the middle/core of the
   protein
   contains H + C… C-C, or CH
   Polar Amino Acids Ans –
   ELECTRONEGATIVE
   contains O + H… O-H. NH,
   SH

Charged Amino Acids Ans – either negative or positive Ionic
Amino Acid Protein structure levels Ans – 1. primary

2. secondary
3. tertiary
4. quaternary
   what level do all proteins have Ans – tertiary
   Primary level of protein/amino acid Ans – held together with peptide
   bonds.
   peptide bonds hold amino acids together which forms polypeptide chains
   when multiple amino acids are attached together
   Secondary Level of protein/Amino acid Ans – forms hydrogen bonds
   with
   the amino back
   bone
   Tertiary Level of protein/amino acid Ans – The R groups interact to
   create
   the three dimensional
   shape
   Quaternary Level of protein/amino acid Ans – two or more subunits . Not
   all proteins have a quaternary structure.. this is where multiple amino acids
   are attached by polypeptide chains
   hydrophobic interactions Ans – weak. Can be broken with change in
   temp.
   (increasing
   temp)
   if in the center of the protein, they are
   stronger
   aggregation Ans – occurs due to hydrophobic interactions.. when
   hydrophobic interaction is broken, they bind to other hydrophobic amino
   acids. (boiling an egg)
   Hydrogen bonds Ans – bond with O or N weak. but
   the more bonds formed the more strength there is.
   broke by increased temp and change in PH