Ames test Study guides, Study notes & Summaries

Heat can be used to separate two strands of double-stranded DNA, with the least amount of heat necessary to separate strands with the fewest and weakest bonds holding them together. Consider the following double-stranded DNA sequences that each consist of 10 bp. Which sequence will likely require the least amount of heat for separation? (A) CGTGCCATTG GCACGGTAAC (B) GCCTCTAGGC CGGAGATCCG (C) AATGCTTATA TTACGAATAT (D) GCTATACTAG CGATATGATC - ANSWER (C) AATGCTTATA ...

A 20 year old patient presents to your clinic with unexplained rectal bleeding, diarrhea, and abdominal pain. Sigmoidoscopy reveals over 100 polyps. Which gene is most likely mutated? A. P53 B. MLH1 C. APC D. MSH2 @Trent Edwards - C. APC While running the Ames test on a compound, the results indicate that it should be considered mutagenic. Which of the following scenarios would confirm this conclusion? A.)After a few hours the bacteria continued to grow in a histidine dependent manner ...

Which statement is correct regarding premature ventricular complexes (PVCs)? PVCs originate from the atrium. PVCs may be unifocal or multifocal in origin. PVCs will not lead to ventricular tachycardia. PVCs only originate from one site in the ventricles. correct answers PVCs may be unifocal or multifocal in origin. A regular rhythm at a rate of 40-60 beats per minute, with narrow QRS complexes, and no visible P waves, is consistent with the presence of: atrial fibrillation. sinus bradyc...

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1910.147 - Control of Hazardous Energy is a fundamental accident prevention control program that affects the control of all potential and kinetic energy. The most effective method of preventing inadvertent start up of equipment is to provide a substantial lock with rigid key control, combined with a tag and education of all personnel invovled. The least effective method of protecting personnel is the use of warning signs. 29 CFR 1910.95 - Occupational Noise Standard Absbestos Air Sampling ...

OPHTHALMIC FRAMES TEST QUESTIONS WITH ALL CORRECT ANSWERS Which tpyes of plastic fram material are manufactured by injction mold? - Answer-Propinoate, optl, nylon/polyamide What types of plastic frames are hypoallergenic? - Answer-Optyl, Nylon/polyamid What material of plastic frame is no adjustable? - Answer-Carbon fiber, polycarb, kevlar, rubber What plastic frame material is used for sport/safety purposes? - Answer-Polycarb What material of fram is combines with nylon? - Answer-...

What would be the effect of a mutation in the HIV-1 reverse transcriptase gene that decreased the rate of mismatches? correct answers Any decrease in the error rate of HIVRT would result in an overall decrease in the rate of viral mutations. This would probably not be an advantage for the virus, as the relatively high error rate often helps to thwart the use of antiviral drugs. Approximately how many ATP are required by helicase for the replication of the E. coli chromosome? correct answers B...

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Edelman and Kudzma’s Canadian Health Promotion Throughout the Life Span 1st Edition Dames Test BankEdelman and Kudzma’s Canadian Health Promotion Throughout the Life Span 1st Edition Dames Test BankEdelman and Kudzma’s Canadian Health Promotion Throughout the Life Span 1st Edition Dames Test BankEdelman and Kudzma’s Canadian Health Promotion Throughout the Life Span 1st Edition Dames Test BankEdelman and Kudzma’s Canadian Health Promotion Throughout the Life Span 1st Edition ...