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- Multiple ChoicePlease save your changes before editing any questions.Because DNA is a highly charged polyanion, its stability to heat denaturationdoes not depend on hydrophobic interactionsincreases with increasing saltis independent of G - C contentdecreases with increasing salt
- Multiple ChoicePlease save your changes before editing any questions.The sugar in RNA is __________ , the sugar in DNA is __________deoxyribose, riboseribose, deoxyriboseribose, phosphateribose, uracil
- Multiple ChoicePlease save your changes before editing any questions.Nucleoside is a pyrimidine or purine basecovalently bonded to a sugarionically bonded to a sugarhydrogen bonded to a sugarnone of the above
- Multiple ChoicePlease save your changes before editing any questions.In gel electrophoresis, what fragments will move most quickly through a gel?Large fragmentsSmall fragmentsLarge genomeNone of thes
- Multiple ChoicePlease save your changes before editing any questions.Which pyrimidine base contains an amino group at carbon 4?CytosineThymineUracilAdenine
- Multiple ChoicePlease save your changes before editing any questions.The glycosidic bonds in DNA and RNAconnect the sugar to the basecan be hydrolyzed by OH- ionstabilize Watson-Crick H-bondsare free to rotate over about 180°
- Multiple ChoicePlease save your changes before editing any questions.Nucleic acids can be analyzed experimentally by theirmolecular weightabsorption of visible lightabsorption of uv lightnone of these
- Multiple ChoicePlease save your changes before editing any questions.Thymidinecan participate in hydrophobic interactions due to its methyl groupis replaced by uracil in RNAnormally forms two hydrogen bonds with adenosineall of the abov
- Multiple ChoicePlease save your changes before editing any questions.A nucleotide consists ofa sugar, a base and a phosphatea sugar and a phosphatepaired basesa sugar, a base and three phosphates
- Multiple ChoicePlease save your changes before editing any questions.A five carbon sugar lacking a hydrogen at the number 2 carbon is found inDNARNAmRNArRNA
- Multiple ChoicePlease save your changes before editing any questions.The most stabilizing force for nucleic acids ishydrogen bondselectrostatic bondVan der Waalsconformational entropy
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is found on RNA but not DNA?UracilDeoxyribosePhosphateAdenine
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is a purine?CytosineAdenineThymineUracil
- Multiple ChoicePlease save your changes before editing any questions.Chargaff's rule states that in a double strandedDNA moleculeConc. Of A nucleotides equals to that of T nucleotidesConc. Of A nucleotides equals to that of G nucleotidesConc. Of Cnucleotides equals to that of T nucleotidesConc. Of U nucleotides equals to that of Gnucleotidesall of the above
- Multiple ChoicePlease save your changes before editing any questions.Choose the incorrect statement of the followingDouble stranded DNA exist atleast in six forms(A-E)&ZB form is usually found in the physiologic formSingle turn of B-DNA about the axis of the molecule contains six bpThe distance spanned by one turn of B DNA is 3.4nmThe helical diameter of double helix in B-DNA is 2 cm
- Multiple ChoicePlease save your changes before editing any questions.When the DNA molecule is twisted in the direction opposite from the clockwise turns of the right handed double helix found in B-DNA such DNA said to have acquiredZ formA formpositive supercoilsnegative supercoilsno change