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Trehalose: Quiz

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Question 1:
What is Trehalose also known as?
-u03B2--glucopyranoside
-4-Hydroxymandelnitrile-u03B2--glucopyranoside; -acetonitrile
u03B1-uFF24-glucopyranosyl u03B1-uFF24-glucopyranoside
6-O-u03B1-D-Glucopyranosyl-D-glucose

Question 2: The bonding also keeps non-reducing sugars in closed-ring form, such that the ________ or ketone end-groups do not bind to the lysine or arginine residues of proteins (a process called glycation).
AlcoholAldehydeAlkeneAlkyne

Question 3: The enzyme trehalase, a ________, present but not abundant in most people, breaks trehalose into two glucose molecules, which can then be readily absorbed in the gut.
Alpha-AmylaseGlycoside hydrolaseAmylaseBeta-galactosidase

Question 4: Wiggers discovered trehalose in an ergot of rye,[3] and in 1859 ________ isolated it from trehala manna, a substance made by weevils, and named it trehalose.
Charles de RémusatPaul-Armand Challemel-LacourMarcellin BerthelotFrançois Guizot

Question 5: Trehalose has the added advantage of being an ________.
Human nutritionNutritionMetabolismAntioxidant

Question 6: It is implicated in anhydrobiosis — the ability of plants and ________ to withstand prolonged periods of desiccation.
AnimalCnidariaCtenophoraBilateria

Question 7: The bonding makes trehalose very resistant to acid ________, and therefore is stable in solution at high temperatures, even under acidic conditions.
CelluloseHydrolysisAcetic acidCarbohydrate

Question 8: Aldohexose (Allose, Altrose, ________, Mannose, Gulose, Idose, Galactose, Talose)
FructoseSucroseGlucoseCarbohydrate

Question 9: Ketohexose (Psicose, ________, Sorbose, Tagatose)
GlucoseSucroseFructolysisFructose

Question 10: When tardigrades (water bears) dry out, the ________ in their bodies changes to trehalose when they enter a state called cryptobiosis — a state wherein they appear dead.
CarbohydrateGlucoseFructoseSucrose







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