Pyridine - Study guides, Class notes & Summaries

Uracil is a _________ base - ANSWER-pyridine Nucleotides consist of_________ - ANSWER-A pentose, phosphate and a pyrimidine or purine base In DNA, which of the following base pairing is correct? - ANSWER-A and T Thymine-dimer formation is commonly occurring reaction caused by - ANSWER-UV radiation Which non covalent forces stabilize the DNA double helix - ANSWER-Hydrogen bonding and hydrophobic interaction Who published the first paper on the structure and function of the DNA? - A...

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PEBC Part I sample questions1 Folic acid has tetrahydrofolate coenzyme activity which is based on the: a. pyrimidine ring. b. purine ring. c. pyrazine ring. d. pteridine ring. e. pyridine ring. d 2 Enkephalins are peptides that: a. have narcotic antagonist activity. b. exert actions resembling those of opioids. c. are found only in the central nervous system. d. cause blood vessel wall relaxation. e. transmit pain impulses. b 3 β-Carotene is the precursor of: a. retin...

onsets for laxatives - Fast : 1-osmotics oral: 30minutes to 96 hrs : 2-Osmotics rectal :15-30 minutes (Glycerin) 3-Emollient rectal : 2-15 minutes like docesate 4-Lubricant rectal : 2-15 minutes Rest of the orals are above 6 hrs... H.pylori treatment - All therapy are for up to 14 days. First line QUAD: Pepto + flagyl + tetracycline + PPI (Tetrtra Flag PPPP) then : clarith + flagyl + PPI Triple: clarith + amox + PPI only use is clarith resitance <15% and no Macrolide before....

PEBC Part I sample questions with answers 100% correct 20231 Folic acid has tetrahydrofolate coenzyme activity which is based on the: a. pyrimidine ring. b. purine ring. c. pyrazine ring. d. pteridine ring. e. pyridine ring. - correct answer d 2 Enkephalins are peptides that: a. have narcotic antagonist activity. b. exert actions resembling those of opioids. c. are found only in the central nervous system. d. cause blood vessel wall relaxation. e. transmit pain impulses. - correct a...

What colour flame does sodium produce? - Ans .yellow What colour flame does lithium produce? - Ans .crimson What colour flame does potassium produce? - Ans .lilac What colour flame does calcium produced? - Ans .orange-red What colour flame does copper produce - Ans .green Some fireworks contain a mixture of metal ions. Why is it difficult to identify the metal ions from the colour of the flame? - Ans .colours are masked what name is given to a useful product such as methylated spirit - A...

1 Folic acid has tetrahydrofolate coenzyme activity which is based on the: a. pyrimidine ring. b. purine ring. c. pyrazine ring. d. pteridine ring. e. pyridine ring. d 2 Enkephalins are peptides that: a. have narcotic antagonist activity. b. exert actions resembling those of opioids. c. are found only in the central nervous system. d. cause blood vessel wall relaxation. e. transmit pain impulses. b 3 β-Carotene is the precursor of: a. retinol. b. thiamine. c. calciferol...

Naplex important questions/exam questions and answers correct/verified 100%> latestNaplex important questions/exam questions and answers correct/verified 100%> latest onsets for laxatives - correct answers-Fast : 1-osmotics oral: 30minutes to 96 hrs : 2-Osmotics rectal :15-30 minutes (Glycerin) 3-Emollient rectal : 2-15 minutes like docesate 4-Lubricant rectal : 2-15 minutes Rest of the orals are above 6 hrs... H.pylori treatment - correct answers-All therapy are for up to 14...

Primary carbon with weak base (CN-) - SN2 Primary carbon with moderate base (CCH-) - SN2 Secondary carbon with weak base (CN-) - SN2 Secondary carbon with moderate base (CCH-) - E2 Tertiary carbons can go thru... - E2, E1, and SN1 Very weak bases can only force a reaction without resonance with a _____________ carbocation. - Tertiary Very weak bases and resonance stabilization cause... - SN1 and E1 B-H in E2 get placed... - Anti t-butoxide promotes...