Description : Regulator gene controls chemical synthesis (Operon concept) by (a) Inhibiting transcription of mRNA (b) Inhibiting enzymes (c) Inhibiting passage of mRNA (d) Inhibiting substrate enzyme reaction
Last Answer : Ans. ((a))
Description : In the ’lac operon’ concept, which of the following is a protein? (A) Operator (B) Repressor (C) Inducer (D) Vector
Last Answer : Answer : B
Description : The enzymes encoded by z, y and a genes of lac operon are inducible, and their inducer is (A) Lactose (B) Allo-lactose (C) Catabolite gene activator protein (D) All of these
Description : Positive control of induction is best described as a control system in which an operon functions (A) Unless it is switched off by a derepressed repressor protein (B) Only after a repressor protein is ... on (D) Only after an inducer protein, which is activated by an inducer, switch it on
Last Answer : Answer : D
Description : In the lac operon concept, a protein molecule is (A) Operator (B) Inducer (C) Promoter (D) Repressor
Description : Which of the following is required as inducer(s) for the expression of Lac operon? (a) Lactose (b) Lactose and galactose (c) Glucose (d) Galactose
Last Answer : (c) Glucose
Description : .In negative operon, (a) co-repressor binds with repressor (b) co-repressor does not bind with repressor (c) co-repressor binds with inducer (d) cAMP have negative effect on lac operon. (
Last Answer : co-repressor binds with repressor
Last Answer : Lactose
Description : Select the incorrect statement out of the five given below about lac operon when Lactose is present in the medium. a) Gene - A gets transcribed into mRNA which produces β-galactoside permease b) ... polymerase transcribe Z-gene, Y-gene and A-gene e) Allolactose is the inducer of lac operon
Last Answer : Gene – A gets transcribed into mRNA which produces β-galactoside permease b) Inducer-Repressor complex is formed
Description : Which one of the following is not a part of a transcription unit in DNA? (a) The inducer (b) A terminator (c) A promoter (d) The structural gene
Last Answer : (c) A promoter
Last Answer : (a) The inducer
Description : Which one of the following is not a part of a transcription unit in DNA ? (1) The structural gene (2) The inducer (3) A terminator (4) A promoter
Last Answer : (2) The inducer
Description : Lac operon of E. coli contains _______ is continuity. (A) Regulator and operator genes only (B) Operator and structural genes only (C) Regular and structural genes only (D) Regulator, operator and structural genes
Description : In operon concept, regulator gene functions as (a) inhibitor (b) repressor (c) regulator (d) all of these.
Last Answer : a) inhibitor
Description : The region of the Lac operon which must be free from structural gene transcription to occur is (A) The operator locus (B) The promoter site (C) The ‘a’ gene (D) The ‘i’ gene
Last Answer : Answer : A
Description : Transcription of structural genes of lac operon is prevented by binding of the repressor tetramer to (A) i gene (B) Operator locus (C) Promoter (D) z gene
Description : The function of a repressor protein in an operon system is to prevent synthesis by binding to (A) The ribosome (B) A specific region of the operon preventing transcription of structural genes (C) The RNA polymerase (D) A specific region of the mRNA preventing translation to protein
Description : Which one of the following is wrongly matched? (a) Transcription - Writing information from DNA to tRNA. (b) Translation - Using information in mRNA to make protein. (c) Repressor protein - Binds to operator to stop enzyme synthesis. (d) Operon - Structural genes, operator and promoter.
Last Answer : (c) Repressor protein - Binds to operator to stop enzyme synthesis.
Description : .Gene regulation governing lactose operon of E.coli that involves the lac I gene product is (a) negative and repressible because repressor protein prevents transcription (b) feedback inhibition ... be induced by lactose (d) negative and inducible because repressor protein prevents transcription.
Last Answer : (d) negative and inducible because repressor protein prevents transcription.
Last Answer : (d) Operon - Structural genes, operator and promoter
Description : Gene regulation governing lactose operon of E.coli that involves the lac I gene product is (a) negative and repressible because repressor protein prevents transcription (b) feedback inhibition ... be induced by lactose (d) negative and inducible because repressor protein prevents transcription.
Description : A level of regulation, demonstrated by the termination of transcription if tryptophan is abundant, by the tryptophan operon in E.coli cells is called A.activation B.attenuation C.corepression D.desiccation
Last Answer : B.attenuation
Description : During transcription, the DNA site at which RNA polymerase binds is called (a) promoter (b) regulator (c) receptor (d) enhancer.
Last Answer : d) enhancer
Last Answer : (a) promoter
Description : Pine oil and Cresylic acid are used as __________ in the froth floatation process. (A) Frother (B) Collector (C) Depressor (D) Conditioner
Last Answer : (A) Frother
Description : Captopril pretreatment: A. Inhibits the pressor action of angiotensin I B. Inhibits the pressor action of angiotensin II C. Potentiates the depressor action of bradykinin D. Both ‘A’ and ‘C’ are correct
Last Answer : D. Both ‘A’ and ‘C’ are correct
Description : The simplest method of controlling the terminal voltage of compound-wound DC generator is with a _____________. A. hand-operated field rheostat connected in series with the shunt field circuit B. ... in series with the load D. balance coil diverting neutral current through the shunt field
Last Answer : Answer: A
Description : Explain environmental laws for controlling pollution
Last Answer : 1. The Environment (Protection) Act, 1986 - The Environment (Protection) Act, 1986 authorizes the central government to protect and improve environmental quality, control and reduce pollution from ... sources with the objective of maintaining the ambient air quality standards in respect of noise.
Description : Which one of the following binds to specific nucleotide sequences that are upstream and most distant from the start site? (A) RNA polymerase (B) Repressor (C) Inducer (D) Restriction
Description : Which one of the following binds to specific nucleotide sequences? (A) RNA polymerase (B) Repressor (C) Inducer (D) Restriction
Description : Which of the following is a microsomal enzyme inducer? (A) Indomethacin (B) Clofibrate (C) Tolbutamide (D) Glutethamide
Description : In which of the following types of enzymes an inducer is not required? (A) Inhibited enzyme (B) Cooperative enzyme (C) Allosteric enzyme (D) Constitutive enzyme
Description : A demonstrable inducer is absent in (A) Allosteric enzyme (B) Constitutive enzyme (C) Inhibited enzyme (D) Co-operative enzyme ENZYMES 141
Description : An inducer is absent in the type of enzyme: (A) Allosteric enzyme (B) Constitutive enzyme (C) Co-operative enzyme (D) Isoenzymic enzyme
Description : The following prostanoid is a potent inducer of platelet aggregation (a) Prostacyclin (b) Prostaglandin E2 (c) Prostaglandin D2 (d) Thromboxane A2
Last Answer : Ans: D
Description : Which one of the following antibiotics is a potent inducer of hepatic drug-metabolizing enzymes? (a) Ciprofloxacin (b) Cyclosporine (c) Erythromycin (d) Rifampin (e) Tetracycline
Description : The following prostanoid is a potent inducer of platelet aggregation: A. Prostacyclin B. Prostaglandin E2 C. Prostaglandin D2 D. Thromboxane A2
Last Answer : D. Thromboxane A2
Description : Cimetidine interacts with more drugs than ranitidine because; a) It is subjected to greater first pass metabolism b) It is a more potent enzyme inducer c) It is a more potent enzyme inhibitor d) It has better oral absorption
Last Answer : c) It is a more potent enzyme inhibitor
Description : All are Selected Cytochrome P3A4 Inducer EXCEPT___________ a) Efavirenz b) Erythromycin c) Dexamethasone d) Nevirapine
Last Answer : b) Erythromycin
Description : The following is not an element of M & T system a) Recording b) Analyzing c) Controlling d) Complaining
Last Answer : Complaining
Description : One of the following is not the element of energy monitoring & targeting system a) Recording the energy consumption b) comparing the energy consumption C)Controlling the energy consumption d) Reducing the production
Last Answer : Reducing the production
Description : 68. One of the following is not the element of energy monitoring & targeting system a) Recording the energy consumption b) Comparing the energy consumption c) Controlling the energy consumption d) Reducing the production
Description : Redditors, what is the thing that triggers you the most?
Last Answer : People that get triggered.
Description : Is this taking "triggers" a bit too far?
Last Answer : Can you give me a source of this, like the original episode where his line came from? I don’t think I can properly judge this without a proper context.
Description : What thoughts are guaranteed triggers of joyful feelings for you?
Last Answer : Oddly enough, I can thank Loli for this. Guardians Of The Galaxy, one and two. I like to collect these and line em up on my console. Baby Groot Drax's laugh. You made me kick grass! ... tough time finding cheerful moments these days, but those two movies are my reliable go to. Thanks, loli. :-)
Description : Why are so few women found behind the triggers in America’s mass shooting sprees?
Last Answer : Are men just wired for random killing No. Well, some of them are somewhat set up for it, due to our dysfunctional culture which has men shut down their compassionate/emotional aspects, swallow shame and ... 't train them to relate to violence in the same ways it trains men to relate to violence.
Description : Do you have any emotional triggers that you know of?
Last Answer : Yeah, you know, patriarchy and sexual abuse.
Description : Good mood triggers?
Last Answer : Taking a walk through some woods especially near a lake or stream.
Description : I have a recurrent pain in my esophagus/sternum area. Could this be acid indigestion and what foods are triggers?
Last Answer : Does it happen at certain times? At night, laying down, working on something, etc.
Description : I have heard that the sense that triggers memories best is smell. Have you ever remembered something due to smell that you had otherwise forgotten? What does this say about how our memories work?
Last Answer : answer:Smells only come second nature to me, compared with music as an association. I can hear an old song and relate it to an eventful time in my past. Smells are good, but music does it for me. Good question. Buttermilk soap? Where can I buy it?