WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND GUARANTEED SUCCESS!!
1. Bohr Effect chart (low pH) C- High CO2
H- High H+
A- Acidic
R-Release of O2(rt. Shift)
T- tense state (in tissues)
2. Primary structure Sequence of amino acids that make up a protein
3. Secondary Structure Sequence of amino acids fold.
4. Tertiary Structure -more folding in a 3D shape.
-R groups (side chains)
5. Quaternary Structure Protein has more than 1 polypeptide chain.
6. Chemical reaction -absorb and release energy
-activation energy
-energy is released (heat & light) when bonds are broken.
7. Exothermic reaction Exo=to release
Thermo=heat
-chemical reaction that releases more energy than it absorbs (as
heat & light)
8. Example of exothermic re- Cellular respiration- breaks down glucose to make cellular energy
action
9. Endothermic reaction Endo=absorb
Thermos=heat
-absorbs more energy than it releases
10. Example of endothermic Photosynthesis- takes in light to break down to create glucose
reaction
, WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND GUARANTEED SUCCESS!!
11. Catalyst Substance that will decrease the activation energy needed to start
a chemical reaction
12. Enzymes -catalysts used by cells
-increase the rate of chemical reaction
-specific to substrates
13. Enzyme structure -they are proteins
-twist, fold, bend to final shape
-shape attracts specific molecules
14. Substrate Molecules that bind to the enzyme
15. Active site -location on enzyme where substrate binds
16. Function of DNA poly- -increase expression
merase in process of PCR. -2 genes
-SIRT1 & SIRT2
17. Function of a molecule Structural component of the lipid bilayer
18. How would lipid produc- Produce lipids with shorter fatty acid chains
tion in a cell change in
order to maintain fluidity
of its cell membrane as it
adapts to lower tempera-
tures?
19. Function of cholesterol Maintains membrane fluidity
20. Lipid (fat) soluble vitamins A, D, E, K
21. An increase in NAD+ concentration in the mitochondrial matrix
, WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND GUARANTEED SUCCESS!!
What stimulates beta-oxi-
dation of fatty acids?
22. What occurs in an other- Acetone is produced in the blood
wise healthy person whose
diet has very few carbs and
high levels of fats?
23. Amino acids -Non-polar (hydrophobic)
-Polar charged
-Polar uncharged
24. Which type of mammalian Recombination
DNA damage repair re-
quires the presence of the
chromosome that is ho-
mologous to the damaged
chromosome?
25. Xeroxerma Pigmentosum A recessive genetic disease that occurs when one or more of the
(XP) genes that perform nucleotide excision repair are nonfunctional
26. 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 gener-
al population?
27. Assuming 100% reaction ef- 16
ficiency, how many DNA
copies are created after
the completion of 4 com-
plete PCR cycles?
ANSWERS 100% SOLVED AND GUARANTEED SUCCESS!!
1. Bohr Effect chart (low pH) C- High CO2
H- High H+
A- Acidic
R-Release of O2(rt. Shift)
T- tense state (in tissues)
2. Primary structure Sequence of amino acids that make up a protein
3. Secondary Structure Sequence of amino acids fold.
4. Tertiary Structure -more folding in a 3D shape.
-R groups (side chains)
5. Quaternary Structure Protein has more than 1 polypeptide chain.
6. Chemical reaction -absorb and release energy
-activation energy
-energy is released (heat & light) when bonds are broken.
7. Exothermic reaction Exo=to release
Thermo=heat
-chemical reaction that releases more energy than it absorbs (as
heat & light)
8. Example of exothermic re- Cellular respiration- breaks down glucose to make cellular energy
action
9. Endothermic reaction Endo=absorb
Thermos=heat
-absorbs more energy than it releases
10. Example of endothermic Photosynthesis- takes in light to break down to create glucose
reaction
, WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND GUARANTEED SUCCESS!!
11. Catalyst Substance that will decrease the activation energy needed to start
a chemical reaction
12. Enzymes -catalysts used by cells
-increase the rate of chemical reaction
-specific to substrates
13. Enzyme structure -they are proteins
-twist, fold, bend to final shape
-shape attracts specific molecules
14. Substrate Molecules that bind to the enzyme
15. Active site -location on enzyme where substrate binds
16. Function of DNA poly- -increase expression
merase in process of PCR. -2 genes
-SIRT1 & SIRT2
17. Function of a molecule Structural component of the lipid bilayer
18. How would lipid produc- Produce lipids with shorter fatty acid chains
tion in a cell change in
order to maintain fluidity
of its cell membrane as it
adapts to lower tempera-
tures?
19. Function of cholesterol Maintains membrane fluidity
20. Lipid (fat) soluble vitamins A, D, E, K
21. An increase in NAD+ concentration in the mitochondrial matrix
, WGU BIOCHEMISTRY OA (2025) EXAM QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND GUARANTEED SUCCESS!!
What stimulates beta-oxi-
dation of fatty acids?
22. What occurs in an other- Acetone is produced in the blood
wise healthy person whose
diet has very few carbs and
high levels of fats?
23. Amino acids -Non-polar (hydrophobic)
-Polar charged
-Polar uncharged
24. Which type of mammalian Recombination
DNA damage repair re-
quires the presence of the
chromosome that is ho-
mologous to the damaged
chromosome?
25. Xeroxerma Pigmentosum A recessive genetic disease that occurs when one or more of the
(XP) genes that perform nucleotide excision repair are nonfunctional
26. 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 gener-
al population?
27. Assuming 100% reaction ef- 16
ficiency, how many DNA
copies are created after
the completion of 4 com-
plete PCR cycles?
