BCHM 270 TEST QUESTIONS WITH ANSWERS ALL CERTIFIED
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Course
BCHM 270
Institution
BCHM 270
BCHM 270 TEST QUESTIONS WITH ANSWERS ALL CERTIFIED
fatty acid
a) degradation produces both FADH2 and NADH
b) synthesis requires carnitine shuttle
c) degradation occurs after carbohydrate-rich meal
d) degradation requires an acetyl-CoA
e) synthesis occurs primarily in the mitochondria - Answe...
BCHM 270 TEST QUESTIONS
WITH ANSWERS ALL CERTIFIED
fatty acid
a) degradation produces both FADH2 and NADH
b) synthesis requires carnitine shuttle
c) degradation occurs after carbohydrate-rich meal
d) degradation requires an acetyl-CoA
e) synthesis occurs primarily in the mitochondria - Answer-a) degradation produces both
FADH2 and NADH
the tissue that plays the main role in regulating the body's cholesterol balance is the
a) red blood cells
b) liver
c) adipose tissue
d) skeletal muscle
e) brain - Answer-b) liver
what is used by the body to emulsify dietary lipids in the small intestine?
a) cholecystokinin
b) chylomicrons
c) bile salts
d) phospholipase A2
e) acid lipases - Answer-b) bile salts
If oleic acid (18:1 cis-Δ 9) is elongated twice, what is the product?
a) 20:2 cis-Δ9
b) 22:2 cis-Δ 1,13
c) 18:1 cis-Δ7
d) 22:1 cis-Δ 13
e) 22:1 cis-Δ 11 - Answer-d) 22:1 cis-Δ 13
which is true regarding digestion of dietary proteins?
a) trypsin acts in the small intestine
b) digestion of proteins begins in the small intestine
c) pepsin is secreted by the pancreas
d) dietary proteins are emulsified in the stomach
e) chymotrypsin acts in the stomach - Answer-a) trypsin acts in the small intestine
ammonia is converted to urea in the
a) liver
b) heart
c) skeletal muscle
, d) brain
e) kidney - Answer-a) liver
trypsin
a) is activated by hydrochloric acid
b) is secreted by the small intestine
c) is a zymogen
d) does not activate other zymogens
e) hydrolyzes a peptide bond - Answer-e) hydrolyzes a peptide bond
hypoglycemia
a) is characterized by symptoms including confusion, aberrant behaviour, or coma
b) is resolved within several hours following administration of intravenous glucose
c) may be a medical emergency because the heart has an absolute requirement for a
continuous supply of glucose
e) occurs when blood glucose levels are equal to or less than 400mg/dl - Answer-b)
hypoglycemia is characterized by symptoms of confusion, aberrant behaviour, or coma
relative or absolute lack of insulin in humans would result in which of the following
reactions in the liver?
a) increased glycogen synthesis
b) decreased glycogenolysis
c) decreased action of hormone-sensitive lipase
d) decreased gluconeogenesis from lactate
e) increased formation of 3-hydroxybutyrate - Answer-e) increased formation of 3-
hydroxybutyrate (ketone!!)
A restriction enzyme can be used for which techniques?
a) PCR and cDNA microarray
b) ELISA and qPCR
c) southern blots and cloning
d) northern blots and sds page
e) western blots and enzyme assays - Answer-c) southern blots and cloning
the mutation most likely to cause damage to protein function in this list is
a) a mutation in the third position of Thr's ACA codon
b) the mutation of ATG to AGG in the first codon
c) a frameshift mutation near the end of the protein sequence
d) a mutation of CUC to AUC (Leu to Ile) in the middle of the protein - Answer-b) the
mutation of ATG to AGG in the first codon
a molecular biologist has digested DNA with Agel, which cuts sites 5'-A/CCGGT-3' and
the reverse compliment sequence 3'-TGGCC/A-5'. which restriction enzyme produces
compatible sticky ends so they can be combined with DNA ligase for cloning?
a) SmaI 5'-CCC/GGG-3'
b) KasI 5'-G/GCGCC-3'
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