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Flavonoids and Phenolic Compounds

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Questions and Answers

What is the general structure of flavonoids?

15-carbon skeleton, containing 2 benzene rings connected by a 3-carbon linking chain (correct)

20-carbon skeleton, containing 1 benzene ring connected by a 2-carbon linking chain

12-carbon skeleton, containing 4 benzene rings connected by a 2-carbon linking chain

10-carbon skeleton, containing 3 benzene rings connected by a 4-carbon linking chain

In which natural products are flavonoids commonly found?

Meat, dairy products, and grains

Seafood and seaweed

Alcohol and processed foods

Fruits, vegetables, nuts, seeds, stems, flowers, and tea (correct)

Which cellular receptor sites do flavonoids bind to?

Cytoplasmic receptor sites

Only to specific cellular receptor sites

Nuclear receptor sites

A range of cellular receptor sites (correct)

What is the responsible for the color of flowers and fruits?

<p>Flavonoids</p> Signup and view all the answers

What color does AlCl3 turn when in contact with flavonoids?

<p>Yellow</p> Signup and view all the answers

Study Notes

Flavonoids Structure and Occurrence

Flavonoids have a general structure of 15 carbon atoms, arranged in a specific pattern of three six-membered rings.
Flavonoids are commonly found in natural products like fruits, vegetables, and plant-based foods.

Flavonoids and Cellular Receptors

Flavonoids bind to cellular receptor sites, influencing various biological processes.

Pigmentation and Color

Flavonoids are responsible for the color of flowers and fruits.
AlCl3 (aluminum chloride) turns yellow when in contact with flavonoids, indicating the presence of these compounds.

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Description

Test your knowledge on flavonoidal glycosides and other related phenolic compounds, which are important secondary metabolites synthesized mainly by plants. Learn about the general structure of flavonoids and their significance in the human diet.