
Proteins LM6: Transamination and Deamination Reactions
Quiz
•
Chemistry
•
University
•
Hard
Amino Acid
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Most ammonia generated in the body normally comes from the oxidative deamination of which amino acid?
Ala
Glu
Asn
Asp
Gln
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following coenzymes carries one-carbon fragments from amino acids to intermediates of purine and pyrimidine nucleotides?
Glutamine
a-Ketoglutarate
Tetrahydrofolate
Aspartate
Vitamin B12
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following enzymes is involved with the conversion of aspartate and a-ketoglutarate to oxaloacetate and glutamate, respectively?
ALT
GLDH
SGPT
SGOT
Asparagine synthetase
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Glutamate dehydrogenase is present in all of the following, EXCEPT:
Erythrocytes
Liver
Kidney
Brain
Muscle
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
There are no known metabolic defects associated with the conversion of a-KG= to Glu, Ala to pyruvate, Asp to OAA, or Gln to Glu. This indicates that:
a. These reactions are unimportant.
b. These reactions are essential for life
.
c. Investigators have been largely funded to do
other studies.
d. Investigators have withheld information from
us.
e. Amino acid catabolism is unessential for life.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Essentially all of the a-amino nitrogen from amino acid catabolism can be funneled through:
Acetyl-CoA
a-Keto acids
Catalase
Asparagine
Glutamate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The oxidative deamination of glutamate yields NH4+ and:
NAD+
Oxaloacetate
Gln
Pyruvate
a-KG=
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The primary end-product of nitrogen metabolism in mammals is:
NH3
NH4+
Urea
NADH
Uric acid
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