Exam (elaborations)
BCHM 270 Test with Questions Solved 100% Correct |Verified Solutions
- Course
- Institution
BCHM 270 Test with Questions Solved 100% Correct |Verified Solutions
[Show more]
Seller
Follow
Content preview
BCHM 270 Test with QuestionsSolved 100% Correct |Verified
Solutions
What is correct about the classification of amino acids?
a. Tyr, Phe, Trp, and Ile are glucogenic and ketogenic. b. His, Met, Thr, and Val are
nonessential glucogenic.
c. Leu, Lys, Tyr, Pro, and Ser are nonessential glucogenic.
d. A and B are true.
e. A and C are true. - Answer
Which is true about PKU?
a. Pyridoxine (B6) responsive patients have a better clinical outcome.
b. The most common cause is a defect in cystationine B-synthase.
c. Tyrosine is not hydroxylated, so untreated patients have darker pigmentation.
d. Phenyllacetate and phenylacetate are elevated in the blood.
e. Mental retardation is caused by development of amyloid plaques. - Answer
Which of the following is NOT a pancreatic protease?
a. Carboxypeptidases A and B
b. Trypsin
,c. Elastase
d. Chymotrypsin
e. Pepsin - Answer
Which of the following factors affect the velocity of an enzyme catalyzed reaction?
a. Temperature.
b. Concentration of Substrate.
c. pH.
d. All of the above.
e. None of the above. - Answer d
Amino acids share a common core structure that is comprised of:
a Acarboxyl group (COOH).
b. An alpha-carbon (Ca).
c. An amino group (NHs*).
d. All of the above.
e. None of the above. - Answer d
Which of the following is NOT an interaction responsible for stabilizing the -3
dimensional fold of a protein?
a. Hydrogen bond
b. Hydrophobic interactions
c. Ionic bond
d. Disulfide bond
e. None of the above. - Answer a
The Michaelis constant (Km):
,a. Is the concentration of enzyme required to reach Vmax
b. Is the concentration of substrate required to reach
Vmax/2 c. Is unrelated to the affinity of an enzyme for a
substrate. d. All of the above.
e. None of the above. - Answer b
ATP is the currency of energy in the cell, storing and transferring energy. The energy in
ATP is released by:
a. Pumping protons across the mitochondrial membrane.
b. Hydrolysis of phosphates from the ATP molecule.
c. Coupling of reactions to ATP formation.
d. All of the above.
e. None of the above. - Answer b
The enzymes that catalyze the reactions of the Tricarboxylic acid (TCA) cycle:
a. Are found in the mitochondrial matrix.
b. Require energy in the form of ATP.
c. Are found in the cytosol.
d. Do not recycle the intermediates of the pathways.
e. Regenerate acetyl CoA after completion of the cycle. - Answer a
Aerobic glycolysis describes the conversion of glucose to:
a. Acetvl CoA.
b. Lactate.
c. Phosphoenolpyruvate.
d. Pyruvate.
, e. Glucose. - Answer d
Oxidative Deamination of Amino Acids
а. Occurs primarily in the liver and kidney
b. Glutamate dehydrogenase converts glutamate to a-ketoglutarate and ammonia
c. Glutamate dehydrogenase use NADPH to produce glutamate from a-
ketoglutarate and ammonia.
d. AandC.
e. All of the above. - Answer
Which of the following can lead to steatorrhea?
a. Cystic fibrosis
b. A diet high in carbohydrates
c. Lack of trypsin and chymotrypsin.
d. A and C.
e. All of the above. - Answer d
Which is FALSE for Aminotransferases?
.a High circulating levels of ALT may indicate kidney dysfunction.
b. ALT catalyzes the transfer of alanine to a-ketoglutarate.
c. ASP converts oxaloacetate and glutamate to aspartate and a-ketoglutarate.
d. AST and ALT are elevated in all liver diseases.
e. All are true. - Answer
How does muscle handle ammonia differently than other tissues?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller KenAli. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73091 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now