8/17/25, 2:55 AM WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT ANSWERS 100% SOLVED AND GUARANTEED SU…
WGU BIOCHEMISTRY OA (2025) EXAM
QUESTIONS AND ALL CORRECT ANSWERS
100% SOLVED AND
GUARANTEED SUCCESS!!
A recessive genetic disease that occurs when one or
Xeroxerma Pigmentosum (XP)
more of the genes that perform nucleotide excision
repair are nonfunctional
Why do XP patients have a The mutation of all other genes is higher due to failure to repair.
much higher incidence of skin
cancer than the general
population?
Assuming 100% reaction 16
efficiency, how many DNA
copies are created after
the completion of 4
complete PCR cycles?
What is the function of DNA It recognizes the primers and uses the available dNTPs
polymerase in the process to replicate the template DNA sequence.
of PCR?
What difference in the The nucleosomes become more widely spaced.
regions of the SIRT1 &
SIRT2 genes in people
addicted to cocaine
increases their expression?
… 1/20
,8/17/25, 2:55 AM WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT ANSWERS 100% SOLVED AND GUARANTEED SU…
C- High
CO2 H-
Bohr Effect chart (low pH) High
H+ A-
Acidic
R-Release of
O2(rt. Shift) T-
tense state (in
tissues)
Primary structure Sequence of amino acids that make up a protein
Secondary Structure Sequence of amino acids fold.
-more folding in a 3D shape.
Tertiary Structure
-R groups (side chains)
Quaternary Structure Protein has more than 1 polypeptide chain.
-absorb and release energy
Chemical reaction -activation energy
-energy is released (heat & light) when bonds are broken.
Exo=to
Exothermic reaction release
Thermo=
heat
-chemical reaction that releases more energy than it absorbs (as
heat & light)
Example of exothermic Cellular respiration- breaks down glucose to make cellular
reaction energy
Endo=absorb
Endothermic reaction Thermos=heat
-absorbs more energy than it releases
Example of endothermic Photosynthesis- takes in light to break down to create glucose
reaction
Substance that will decrease the activation energy
Catalyst
needed to start a chemical reaction
-catalysts used by cells
Enzymes -increase the rate of chemical reaction
-specific to substrates
-they are proteins
Enzyme structure -twist, fold, bend to final shape
-shape attracts specific molecules
… 2/20
, 8/17/25, 2:55 AM WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT ANSWERS 100% SOLVED AND GUARANTEED SU…
Substrate Molecules that bind to the enzyme
Active site -location on enzyme where substrate binds
-increase expression
Function of DNA polymerase
-2 genes
in process of PCR.
-SIRT1 & SIRT2
Function of a molecule Structural component of the lipid bilayer
How would lipid production Produce lipids with shorter fatty acid chains
in a cell change in order to
maintain fluidity of its cell
membrane as it adapts to
lower
temperatures?
Function of cholesterol Maintains membrane fluidity
Lipid (fat) soluble vitamins A, D, E, K
What stimulates beta- An increase in NAD+ concentration in the mitochondrial matrix
oxidation of fatty acids?
… 3/20
WGU BIOCHEMISTRY OA (2025) EXAM
QUESTIONS AND ALL CORRECT ANSWERS
100% SOLVED AND
GUARANTEED SUCCESS!!
A recessive genetic disease that occurs when one or
Xeroxerma Pigmentosum (XP)
more of the genes that perform nucleotide excision
repair are nonfunctional
Why do XP patients have a The mutation of all other genes is higher due to failure to repair.
much higher incidence of skin
cancer than the general
population?
Assuming 100% reaction 16
efficiency, how many DNA
copies are created after
the completion of 4
complete PCR cycles?
What is the function of DNA It recognizes the primers and uses the available dNTPs
polymerase in the process to replicate the template DNA sequence.
of PCR?
What difference in the The nucleosomes become more widely spaced.
regions of the SIRT1 &
SIRT2 genes in people
addicted to cocaine
increases their expression?
… 1/20
,8/17/25, 2:55 AM WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT ANSWERS 100% SOLVED AND GUARANTEED SU…
C- High
CO2 H-
Bohr Effect chart (low pH) High
H+ A-
Acidic
R-Release of
O2(rt. Shift) T-
tense state (in
tissues)
Primary structure Sequence of amino acids that make up a protein
Secondary Structure Sequence of amino acids fold.
-more folding in a 3D shape.
Tertiary Structure
-R groups (side chains)
Quaternary Structure Protein has more than 1 polypeptide chain.
-absorb and release energy
Chemical reaction -activation energy
-energy is released (heat & light) when bonds are broken.
Exo=to
Exothermic reaction release
Thermo=
heat
-chemical reaction that releases more energy than it absorbs (as
heat & light)
Example of exothermic Cellular respiration- breaks down glucose to make cellular
reaction energy
Endo=absorb
Endothermic reaction Thermos=heat
-absorbs more energy than it releases
Example of endothermic Photosynthesis- takes in light to break down to create glucose
reaction
Substance that will decrease the activation energy
Catalyst
needed to start a chemical reaction
-catalysts used by cells
Enzymes -increase the rate of chemical reaction
-specific to substrates
-they are proteins
Enzyme structure -twist, fold, bend to final shape
-shape attracts specific molecules
… 2/20
, 8/17/25, 2:55 AM WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT ANSWERS 100% SOLVED AND GUARANTEED SU…
Substrate Molecules that bind to the enzyme
Active site -location on enzyme where substrate binds
-increase expression
Function of DNA polymerase
-2 genes
in process of PCR.
-SIRT1 & SIRT2
Function of a molecule Structural component of the lipid bilayer
How would lipid production Produce lipids with shorter fatty acid chains
in a cell change in order to
maintain fluidity of its cell
membrane as it adapts to
lower
temperatures?
Function of cholesterol Maintains membrane fluidity
Lipid (fat) soluble vitamins A, D, E, K
What stimulates beta- An increase in NAD+ concentration in the mitochondrial matrix
oxidation of fatty acids?
… 3/20
