Amino Acid Biosynthesis | Biosynthesis of Tryptophan

Which organisms primarily utilize the shikimate pathway for chorismate generation?

• Mammals

• Bacteria and plants

• Birds

• Fungi

How many enzymatic steps are involved in converting chorismate to tryptophan?

• Three

• Four

• Five

• Six

What is the role of anthranilate synthase in the tryptophan biosynthesis pathway?

• It opens the ribose ring.

• It attaches serine to indole.

• It initiates the conversion of chorismate to anthranilate.

• It converts tryptophan to serotonin.

Which enzyme is responsible for the final step in tryptophan biosynthesis?

• N 5 prime phosphoryl anthranilate isomerase

• Tryptophan synthase

• Indole 3 glycerol phosphate synthase

• Anthranilate synthase

Why is tryptophan considered an essential amino acid for humans?

• It is the most abundant amino acid in proteins.

• Humans cannot synthesize it and must obtain it from their diet.

• It is only found in plant-based foods.

• It is synthesized in the human liver.

In which part of the human body is serotonin primarily produced?

• Raft nucleus of the brain

• Heart

• Liver

• Kidneys

What is the relationship between serotonin and melatonin in the human body?

• Serotonin is converted into melatonin.

• Melatonin is converted into serotonin.

• They are unrelated compounds.

• Both are synthesized in the liver.