Aromatic Family: Phenylalanine and Tyrosine
About the Lecture
The lecture Aromatic Family: Phenylalanine and Tyrosine by Kevin Ahern, PhD is from the course Amino Acid Metabolism. It contains the following chapters:
- Phenylalanine
- Tyrosine
Included Quiz Questions
Which of the following is true regarding phenylalanine?
- Phenylalanine can cause brain damage in high amounts.
- Phenylalanine is a nonessential amino acid.
- Phenylalanine is made from tyrosine.
- Excess phenylalanine hydroxylase causes phenylketonuria.
Which of the following is true regarding tyrosine? Select all that apply.
- Tyrosine is essential only if phenylalanine is absent.
- Tyrosine is an aliphatic amino acid, i.e., it has no cyclic structures with alternating double-bond characteristics.
- Tyrosine is important in chlorophyll.
- A deficiency in 1 of the molecules derived from tyrosine causes Parkinson disease.
- Tyrosine is an important precursor of some neurotransmitters.
The deficiency of which enzyme leads to phenylketonuria?
- Phenylalanine hydroxylase
- Phenylalanine synthase
- Phenylalaninase
- Phenylalanine transaminase
- Phenylalanine kinase
Which of the following does not fall under the category of catecholamines?
- S-adenosylmethionine
- L-dopa
- L-dopamine
- Norepinephrine
- Epinephrine
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Author of lecture Aromatic Family: Phenylalanine and Tyrosine
Kevin Ahern, PhD
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The best explanation, Concise and to the point. Thank you so much.
