Biochemistry Questions and Answers
How well do you understand chemical processes occurring in living matter? Test your knowledge of biochemistry with these questions and answers.
How well do you understand chemical processes occurring in living matter? Test your knowledge of biochemistry with these questions and answers.
What is the heaviest of the twenty amino acids?
Phenylalanine
Tryptophan
Tyrosine
Histidine
Correct answer is B
No explanation has been provided for this answer.
What is the end product of leucine metabolism?
Acetyl-CoA
Pyruvic acid
Oxaloacetic acid
Acetyl carnitine
Correct answer is A
No explanation has been provided for this answer.
A best described ketogenic amino acid is
lysine
tryptophan
valine
none of these
Correct answer is A
No explanation has been provided for this answer.
A ketogenic amino acid is one which degrades to
keto-sugars
either acetyl CoA or acetoacetyl CoA
pyruvate or citric acid cycle intermediates
multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA
Correct answer is B
No explanation has been provided for this answer.
Lysine is degraded to acetoacetyl CoA and is described as a
ketogenic amino acid
glucogenic amino acid
keto-gluco amino acid
none of these
Correct answer is A
No explanation has been provided for this answer.
Transamination is the transfer of an amino
acid to a carboxylic acid plus ammonia
group from an amino acid to a keto acid
acid to a keto acid plus ammonia
group from an amino acid to a carboxylic acid
Correct answer is B
No explanation has been provided for this answer.
In the normal breakdown of phenylalanine, it is initially degraded to
fumarate
tyrosine
lysine
phenylpuruvate
Correct answer is B
No explanation has been provided for this answer.
An example of the oxidative deamination is
glutamate = hexanoic acid + NH3
aspartate + α-ketoglutarate = glutamate + oxaloacetate
glutamate = α-ketoglutarate + NH3
aspartate + hexanoic acid = glutamate + Oxaloacetate
Correct answer is C
No explanation has been provided for this answer.
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