18 Questions
What is the primary function of deamination in protein metabolism?
Removal of nitrogen atoms
Which process leads to the formation of urea in protein metabolism?
Deamination
In which organ are branched-chain amino acids primarily deaminated?
Skeletal muscle
What happens to excess amino acids in terms of energy storage in the body?
Converted to fat for storage
Which cycle is responsible for the excretion of nitrogen in the form of urea?
Urea cycle
What is the fate of nitrogen in muscle during protein metabolism?
Transferred to another amino acid
What cofactor do Transferases use, derived from vitamin B6?
Pyridoxal phosphate
Which enzyme is responsible for the deamination of glutamate?
Glutamate dehydrogenase
In the Urea cycle, what combines nitrogen from aspartate and an ammonium ion?
Argininosuccinate
Which of the following is a direct deaminated product of serine and threonine?
Glutamine
How is nitrogen transported to the liver in the glucose-alanine cycle?
Aspartate
Which enzyme catalyzes the formation of carbamoyl phosphate in the Urea cycle?
[ornithine] transcarbamylase
Which enzyme is responsible for the formation of carbamoyl phosphate in the mitochondria?
Carbamoyl phosphate synthetase
What is the first step in the synthesis of carbamoyl phosphate within the mitochondria?
Phosphorylation of bicarbonate
In the urea cycle, which molecule is formed after the condensation of citrulline with aspartate?
Arginine
What is a consequence of phenylalanine hydroxylase deficiency in individuals?
Accumulation of phenylalanine
Which amino acid is directly affected by phenylketonuria disease?
Phenylalanine
What is the ultimate fate of urea in the body?
Excretion in urine
Test your knowledge on protein metabolism in biology and biochemistry, covering topics such as fatty acids, carbohydrates, glycolysis, amino acids, urea cycle, and more.
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