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WGU BioChem OA Review with complete solution
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WGU BioChem OA Review with complete solution
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WGU BioChem OA Review with completesolution
Which reaction is involved in the digestion of proteins? - -
-ANSWER---Hydrolysis
Which cellular molecules assist denatured proteins in
refolding into a functional form? - --ANSWER---
Chaperones
Which factors favor the deoxygenated form of
hemoglobin? - --ANSWER---Low ph and high carbon
Which situations would block the synthesis of fatty acids
in the liver? - --ANSWER---Defect in enzyme required to
convert acetyl coa into pyruvate
Which molecule is produced when two amino acids are
joined by a peptide bond? - --ANSWER---Dipeptide
,Which molecule in the blood can provide evidence of a
heart attack? - --ANSWER---myoglobin
What happens to hemoglobin structure as ph increases
from 7.2 to 7.4? - --ANSWER---Hemoglobin shifts to R
state
What happens to hemoglobin structure as ph decreases
from 7.4 to 7.2? - --ANSWER---The heme groups
become dome shaped
What is the effect of ph on hemoglobin fiber formationi in
sickle cell anemia? - --ANSWER---At a lower ph
hemoglobin aggregates to form fibers
What is the order of processes that occur during base
excision repair of a strand of mammalian DNA after
damage has been identified? - --ANSWER---Section of
homologous chromosome is aligned with damaged
section, correct oligonucleotide is synthesized, DNA
backbone is ligated
, What is a characteristic of protein denaturation? - --
ANSWER---They are irreversibly functional
How does the misfolding of protein structure at the
teriatary level lead to aggregation seen in
neurodegenerative diseases such as alzheimer's ? - --
ANSWER---Exposed hydrophobic amino acids cause the
misfolded proteins to stick together
In what condition does hemoglobin bind to oxygen most
readily? - --ANSWER---The hemoglobin is already bound
to one oxygen molecule
What occurs during RNA processing to form a mature
mRNA? - --ANSWER---The introns are removed from
the mRNA
Which type of DNA damage is corrected by mismatch
pair? - --ANSWER---Replication error
Which process is an example of an anabolic pathway - --
ANSWER---glycogenesis
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