This collection of Biochemistry Multiple selection Questions & answers (MCQs) focuses on “Regulation of transcription by Steroid Hormones”.
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1. Exactly how do steroid hormones produce their results in cells?a) by activating vital enzymes in metabolic pathwayb) by binding come intracellular receptors and promoting transcription of specific genesc) By cultivating the destruction of certain m-RNAsd) through activating translate in of specific m-RNAsView Answer
Answer: bExplanation: Steroid hormones create their impacts in cells by binding to intracellular receptors and promoting transcription of details genes.
2. Which is an example of a confident regulator?a) CAPb) Lac 1 genec) Trp operond) Met operonView Answer
3. Which is an example of negative regulator?a) CAPb) Lac 1 genec) atom receptorsd) Phosphorylated STAT proteinsView Answer
Answer: bExplanation: CAP, atom receptors and Phosphorylated STAT proteins are optimistic regulators.
4. Steroid regulatory proteins mediate the plot by binding at ___________a) Zinc finger motifb) Leucine zipper motifc) Helix rotate helix motifd) Histone helix motifView Answer
5. Which the end of the adhering to statements is true about gene regulation in bacteria?a) Repressor protein blocks transcription by binding come operator sequenceb) Activator protein bind close to promoters and also increase the performance of transcriptionc) Enhancers typically regulate transcriptiond) Genes through related functions are frequently grouped together and have a single start codonView Answer
6. Steroid hormones receptor binding to _____________a) Hormone an answer elements in m-RNAb) Hormone an answer elements in DNAc) Hormone response elements in proteinsd) ribosom to stimulate translationView Answer
Answer: bExplanation: Hormone response elements are short sequence that DNA where steroid hormone receptors bind.
7. Mode of activity of steroid hormones involve ______________a) Stimulation that DNA replicationb) Stimulation of m-RNA transcriptionc) Inhibition of protein synthesisd) secondary messengerView Answer
Answer: bExplanation: Steroid hormone involve in the stimulation the m-RNA transcription, affect the gene expression.
8. What is the drug antagonist that estrogen?a) Tanoxifenb) Metforminc) Glucophaged) VictozaView Answer
9. Which drug is supplied to terminate at an early stage pregnancies?a) RU486b) Metforminc) Glucophaged) VictozaView Answer
10. Plasma membrane protein suspect to have seen 7 transmembrane helices segment binding __________a) Progesteroneb) Thyroid stimulating hormonec) Insulind) Follicle stimulating hormoneView Answer
Answer: aExplanation: Progesterone hormone is a steroid hormone, have the right to diffuse through cell membranes.
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