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Phytochemistry II: Alkaloids Lab Quiz

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Questions and Answers

Which alkaloid is characterized by the absence of a methyl group, resulting in lower lipid solubility?

Brucine (correct)

Theobromine

Papaverine

Strychnine

What is the primary difference in the detection of Strychnine and Brucine using Conc. HNO3?

Strychnine gives a red color, while Brucine gives a yellow color

Strychnine gives a yellow color, while Brucine gives an intense orange-red color (correct)

Strychnine gives a blue color, while Brucine gives a green color

Strychnine gives a yellow color, while Brucine gives a blue color

Which alkaloid is a smooth muscle relaxant and vasodilator?

Papaverine (correct)

Colchicine

Atropine

Quinine

What is the amino acid precursor of Brucine?

Tryptophan Signup and view all the answers

Which of the following is NOT a true alkaloid?

Theophylline Signup and view all the answers

What is the result of adding Conc. HNO3 to a mixture of Strychnine and Brucine?

Strychnine gives a yellow color and Brucine dissolves Signup and view all the answers

Which of the following is a characteristic of Brucine, but not Strychnine?

Presence of (-OCH3) groups Signup and view all the answers

What is the structure of Papaverine?

Benzylisoquinoline Signup and view all the answers

What is the result of adding SnCl2 to a mixture of Brucine and Conc. HNO3?

A violet color is formed Signup and view all the answers

Which of the following alkaloids is obtained from Theobroma cacao?

Theobromine Signup and view all the answers

What is the primary pharmacological activity of Caffeine?

CNS stimulant Signup and view all the answers

Which of the following alkaloids has a vasodilator effect?

Theobromine Signup and view all the answers

What is the result of Mayer's test for alkaloids?

A creamy white precipitate Signup and view all the answers

Which of the following alkaloids is NOT a purine alkaloid?

Papaverine Signup and view all the answers

What is the source of Caffeine?

Coffee arabica Signup and view all the answers

Which of the following alkaloids is used in the treatment of asthma and COPD?

Theophylline Signup and view all the answers

What is the family of the plant that produces Theophylline?

Theaceae Signup and view all the answers

Phytochemistry II: Alkaloids Lab Quiz

Choose a study mode

Podcast

Questions and Answers

Which alkaloid is characterized by the absence of a methyl group, resulting in lower lipid solubility?

What is the primary difference in the detection of Strychnine and Brucine using Conc. HNO3?

Which alkaloid is a smooth muscle relaxant and vasodilator?

What is the amino acid precursor of Brucine?

Which of the following is NOT a true alkaloid?

What is the result of adding Conc. HNO3 to a mixture of Strychnine and Brucine?

Which of the following is a characteristic of Brucine, but not Strychnine?

What is the structure of Papaverine?

What is the result of adding SnCl2 to a mixture of Brucine and Conc. HNO3?

Which of the following alkaloids is obtained from Theobroma cacao?

What is the primary pharmacological activity of Caffeine?

Which of the following alkaloids has a vasodilator effect?

What is the result of Mayer's test for alkaloids?

Which of the following alkaloids is NOT a purine alkaloid?

What is the source of Caffeine?

Which of the following alkaloids is used in the treatment of asthma and COPD?

What is the family of the plant that produces Theophylline?

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