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Steroid: Quiz


Question 1: Steroids are mainly oxidized by cytochrome P450 oxidase enzymes, such as ________.

Question 2: Several key enzymes can be activated through ________ regulation on activation of SREBP (Sterol Regulatory Element-Binding Protein-1 and -2).
Gene expressionPost-transcriptional regulationTranscription (genetics)RNA

Question 3: [9] Lanosterol can then be converted into other steroids such as ________ and ergosterol.
CholesterolTrans fatLow-density lipoproteinAtherosclerosis

Question 4: Steroid metabolism is the complete set of ________ in organisms that produce, modify and consume steroids.
Chemical reactionNitrogenChemistryHydrogen

Question 5: [11] These bile acids can then be eliminated through secretion from the liver in the ________.
SecretinDigestionBileHuman gastrointestinal tract

Question 6: Hundreds of distinct steroids are found in plants, ________, and fungi.

Question 7: The core is a ________ structure of four fused rings: three cyclohexane rings and one cyclopentane ring.

Question 8: ________ are a class of steroids that interact with androgen receptors to increase muscle and bone synthesis.
TestosteroneDehydroepiandrosteroneAnabolic steroidDihydrotestosterone

Question 9: Steroids and retinoids are both terpenes that are hydrophobic, pass through ________ and bind to intracellular receptors.
Cell (biology)Cell membraneCell nucleusVesicle (biology)

Question 10: Glucocorticoids regulate many aspects of metabolism and immune function, whereas mineralocorticoids help maintain blood volume and control renal excretion of ________.
Half cellLead-acid batteryElectrolyteFuel cell

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