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Sterol: Quiz


Question 1: ________, more commonly known as plant sterols, have been shown in clinical trials to block cholesterol absorption sites in the human intestine, thus helping to reduce cholesterol in humans.

Question 2: [3] They are amphipathic lipids synthesized from acetyl-coenzyme A via the ________ pathway.
11β-hydroxysteroid dehydrogenase type 1HMG-CoA reductase17Beta Hydroxysteroid dehydrogenase3-beta-HSD

Question 3: In humans and other animals, ________, such as cortisol act as signaling compounds in cellular communication and general metabolism.
CorticosteroidMineralocorticoidSex steroidGlucocorticoid

Question 4: Important zoosterols are cholesterol and some steroid hormones; notable phytosterols include ________, sitosterol, and stigmasterol.

Question 5: Sterols and related compounds play essential roles in the physiology of ________ organisms.

Question 6: They are a subgroup of ________ with a hydroxyl group at the 3-position of the A-ring.
MetabolismSteroidTestosteroneLipid metabolism

Question 7: Sterols of plants are called ________ and sterols of animals are called zoosterols.

Question 8: They occur naturally in plants, ________ and fungi, with the most familiar type of animal sterol being cholesterol.

Question 9: Ergosterol is a sterol present in the ________ of fungi, where it serves a role similar to cholesterol in animal cells.
Cell nucleusCell (biology)Vesicle (biology)Cell membrane

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