WGU BIOCHEMISTRY OA CERTIFICATION
EVALUATION 2026 FULL SOLUTION VIEW
AHEAD QUESTIONS
◉ Primary structure
Answer: Sequence of amino acids that make up a protein
◉ Secondary Structure
Answer: Sequence of amino acids fold.
◉ Tertiary Structure
Answer: -more folding in a 3D shape.
-R groups (side chains)
◉ Quaternary Structure
Answer: Protein has more than 1 polypeptide chain.
◉ Chemical reaction
Answer: -absorb and release energy
-activation energy
,-energy is released (heat & light) when bonds are broken.
◉ Exothermic reaction
Answer: Exo=to release
Thermo=heat
-chemical reaction that releases more energy than it absorbs (as
heat & light)
◉ Example of exothermic reaction
Answer: Cellular respiration- breaks down glucose to make cellular
energy
◉ Endothermic reaction
Answer: Endo=absorb
Thermos=heat
-absorbs more energy than it releases
◉ Example of endothermic reaction
Answer: Photosynthesis- takes in light to break down to create
glucose
◉ Catalyst
,Answer: Substance that will decrease the activation energy needed
to start a chemical reaction
◉ Enzymes
Answer: -catalysts used by cells
-increase the rate of chemical reaction
-specific to substrates
◉ Enzyme structure
Answer: -they are proteins
-twist, fold, bend to final shape
-shape attracts specific molecules
◉ Substrate
Answer: Molecules that bind to the enzyme
◉ Active site
Answer: -location on enzyme where substrate binds
◉ Function of DNA polymerase in process of PCR.
Answer: -increase expression
-2 genes
, -SIRT1 & SIRT2
◉ Function of a molecule
Answer: Structural component of the lipid bilayer
◉ How would lipid production in a cell change in order to maintain
fluidity of its cell membrane as it adapts to lower temperatures?
Answer: Produce lipids with shorter fatty acid chains
◉ Function of cholesterol
Answer: Maintains membrane fluidity
◉ Lipid (fat) soluble vitamins
Answer: A, D, E, K
◉ What stimulates beta-oxidation of fatty acids?
Answer: An increase in NAD+ concentration in the mitochondrial
matrix
◉ What occurs in an otherwise healthy person whose diet has very
few carbs and high levels of fats?
Answer: Acetone is produced in the blood
EVALUATION 2026 FULL SOLUTION VIEW
AHEAD QUESTIONS
◉ Primary structure
Answer: Sequence of amino acids that make up a protein
◉ Secondary Structure
Answer: Sequence of amino acids fold.
◉ Tertiary Structure
Answer: -more folding in a 3D shape.
-R groups (side chains)
◉ Quaternary Structure
Answer: Protein has more than 1 polypeptide chain.
◉ Chemical reaction
Answer: -absorb and release energy
-activation energy
,-energy is released (heat & light) when bonds are broken.
◉ Exothermic reaction
Answer: Exo=to release
Thermo=heat
-chemical reaction that releases more energy than it absorbs (as
heat & light)
◉ Example of exothermic reaction
Answer: Cellular respiration- breaks down glucose to make cellular
energy
◉ Endothermic reaction
Answer: Endo=absorb
Thermos=heat
-absorbs more energy than it releases
◉ Example of endothermic reaction
Answer: Photosynthesis- takes in light to break down to create
glucose
◉ Catalyst
,Answer: Substance that will decrease the activation energy needed
to start a chemical reaction
◉ Enzymes
Answer: -catalysts used by cells
-increase the rate of chemical reaction
-specific to substrates
◉ Enzyme structure
Answer: -they are proteins
-twist, fold, bend to final shape
-shape attracts specific molecules
◉ Substrate
Answer: Molecules that bind to the enzyme
◉ Active site
Answer: -location on enzyme where substrate binds
◉ Function of DNA polymerase in process of PCR.
Answer: -increase expression
-2 genes
, -SIRT1 & SIRT2
◉ Function of a molecule
Answer: Structural component of the lipid bilayer
◉ How would lipid production in a cell change in order to maintain
fluidity of its cell membrane as it adapts to lower temperatures?
Answer: Produce lipids with shorter fatty acid chains
◉ Function of cholesterol
Answer: Maintains membrane fluidity
◉ Lipid (fat) soluble vitamins
Answer: A, D, E, K
◉ What stimulates beta-oxidation of fatty acids?
Answer: An increase in NAD+ concentration in the mitochondrial
matrix
◉ What occurs in an otherwise healthy person whose diet has very
few carbs and high levels of fats?
Answer: Acetone is produced in the blood
