16 Questions
What are glycosides composed of?
Sugar part and a non-sugar part
How can glycosides be hydrolyzed?
By acids or by enzymes
What color does phenolic glycosides give when tested with ferric chloride solution?
Blue color
Which type of glycosides have a flavone skeleton as the aglycone?
Flavonoid Glycosides
What happens to most flavonoids when dissolved in alkalis?
They give yellow solutions
Which glycoside reduces capillary fragility and hence decreases bleeding?
Hesperidine of the citrus fruits
Which pigments give colored petals of flowers their characteristic colors?
Anthocyanins
Which glycosides are often orange-red compounds, soluble in hot water or dilute alcohol?
Anthraquinones
Which group of glycosides are characterized by the property of producing a permanent froth in aqueous solutions?
Saponin Glycosides
Which glycosides are present in several seeds of the family Cruciferae and yield allyllisothiocyanate as one of the hydrolytic products?
Thioglycosides
Which glycosides yield HCN as one of the products of hydrolysis and are commonly found in plants of the family Rosaceae?
Cyanogenetic Glycosides
Which compounds are produced by certain moulds and fungi and possess a bacteriostatic or a bactericidal action?
Antibiotics
Which mycotoxins are produced by some moulds and are developed mostly on mouldy grains?
Aflatoxins
Which natural compounds are necessary for the normal growth of animals and valuable therapeutic agents for the prophylaxis as well as treatment?
Vitamins
Which type of glycosides are used as heart tonics?
Cardiac Glycosides
Which glycoside group contains aglycones that may be either steroid or triterpenoidal in structure?
Saponin Glycosides
This quiz covers the topic of plant secondary metabolites, specifically focusing on glycosides and their classification based on the chemical structure of their aglycones. It also discusses the hydrolyzation of glycosides by acids or enzymes.
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