BCH 361 ICLICKER QUESTIONS WITH REVISED AND UPDATED ANSWERS
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Course
BCH 361 ICLICKER
Institution
BCH 361 ICLICKER
BCH 361 ICLICKER QUESTIONS WITH REVISED AND UPDATED ANSWERS
Which of the following can not be present when brewing alcoholic beverages?
A. Water
B. O2
C. Carbohydrate
D. Microbes - Answer-B. O2
How many intermediates in glycolysis contains the functional group aldehyde?
A. 0
B. 1
C....
BCH 361 ICLICKER QUESTIONS
WITH REVISED AND UPDATED
ANSWERS
Which of the following can not be present when brewing alcoholic beverages?
A. Water
B. O2
C. Carbohydrate
D. Microbes - Answer-B. O2
How many intermediates in glycolysis contains the functional group aldehyde?
A. 0
B. 1
C. 2
D. 3 - Answer-B. 1
What is the effect of fructose 2,6-bisphosphate onglycolysis?
A. It stimulates muscle PFK
B. It inhibits liver pyruvate kinase
C. It stimulates liver PFK
D. It has no effect on glycolysis - Answer-C. It stimulates liver PFK
Diabetes is characterized by high blood glucose level.Based on our discussion of the
regulation of glycolysis, which of the following is a plausible consequence of high blood
glucose level?
A. Muscle glycolysis will increase
B. Muscle glycolysis will decrease
C. Liver glycolysis will increase
D. Liver glycolysis will decrease - Answer-C. Liver glycolysis will increase
Gluconeogenesis of a single glucose molecule from two pyruvates requires4 ATP and 2
GTP. Other than the NTPs used in the conversion of pyruvate toPEP, what is the other
step in gluconeogenesis that require ATP?
A. Dephosphorylation of Glucose-6-phosphate
B. Dephosphorylation of Fructose-1,6-bisphosphate
C. Conversion of 3-phosphoglycerateto 1,3-bisphosphoglycerate
,D. Isomerization of 2-phosphoglycerate to 3-phosphoglycerate. - Answer-C. Conversion
of 3-phosphoglycerateto 1,3-bisphosphoglycerate
The bifunctional enzyme PFK2 both synthesizes and degrades fructose 2,6-
bisphosphate (F2,6BP), an important regulator of glycolysis and gluconeogenesis. What
is the consequence of enzyme phosphorylation on its two activities?
A. Phosphorylation has no effect on PFK2's activities
B. Phosphorylation activates both kinase and phosphatase activities
C. Phosphorylation inhibits the phosphatase activity while activating the kinase activity
D. Phosphorylation inhibits the kinase activity while activating the phosphatase activity -
Answer-D. Phosphorylation inhibits the kinase activity while activating the phosphatase
activity
Which of the cofactors below can have a -SH functional group?
A. Thiamine
B. Lipoic acid
C. FAD
D. NAD+ - Answer-B. Lipoic acid
PDH kinase inhibitors are currently being tested astreatments for both cancers and
diabetes. How wouldPDH kinase inhibitors change the metabolic process?
A. They would increase the concentration of pyruvate
B. They would increase the concentration of acetyl CoA
C. They would reduce the activity of PDH
D. None of the above. - Answer-B. They would increase the concentration of acetyl CoA
In the TCA cycle, citrate is made from condensation of oxaloacetate and acetyl CoA.
One of the carboxyl groups in citrate (aka TCA) is then released as CO2 when isocitrate
is converted to alpha-ketoglutarate. Where did this carboxyl group originate?
A. It came from oxaloacetate
B. It came from acetyl CoA
C. It is impossible to tell because citrate is symmetrical
D. It depends on the order of substrate binding in the citrate synthase step. - Answer-A.
It came from oxaloacetate
Which amino acid can be made from
transamination of oxaloacetate?
A. Asp
B. Glu
C. Asn
D. Gln - Answer-A. Asp
, Recall that the definition of phosphoryl transfer potential of a compound is the amount of
free energy released when the compound is dephosphorylated and only a compound
with a higher phosphoryl transfer potential can transfer its phosphate group to the
dephosphorylated version of a compound with a lower phosphoryl transfer potential,
which of the intermediates in the reaction catalyzed by succinyl-CoAsynthetase should
have the highest phosphoryl transfer potential?
A. Succinyl phosphate
B. Phospho-histidine
C. ATP
D. ADP - Answer-C. ATP
One of the reactions in the metabolism of ethanol is the conversion of ethanol to
acetaldehyde. What is the reducing agent in this reaction and is this an energetically
favorable reaction?
A. Ethanol is the reducing agent and the reaction is favorable
B. Ethanol is the reducing agent and the reaction is not favorable
C. NAD+ is the reducing agent and the reaction is favorable
D. NAD+ is the reducing agent and the reaction is not favorable - Answer-A. Ethanol is
the reducing agent and the reaction is favorable
FMN is an electron carrier in complex I with a standard reduction potential of-0.205 V.
Which of the following compounds can be oxidized by FMN?
A. FADH2
B. H2O
C. H2
D. ubiquinone - Answer-A. FADH2
Which statement about the Q cycle is not true?
A. Two QH2 molecules are oxidized to Q in each complete cycle
B. No semi-quinone radical is generated at any stage of the cycle
C. Two cytochrome c molecules are reduced in each cycle
D. Protons liberated by oxidation of QH2 will be released into the inter membrane space
- Answer-B. No semi-quinone radical is generated at any stage of the cycle
ETC's main job is to create a proton concentration gradient across the inner
mitochondrial membrane.Which complex in the ETC does not contribute to establishing
the proton concentration gradient?
A. Complex I
B. Complex II
C. Complex III
D. Complex IV - Answer-B. Complex II
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