In ribonucleotides (RNA) there is an OH group at position of the 5 carbon sugar

Please explain the 4 types of sugars and why do we need them to function

What is the role of his 12 in the RNase-catalyzed hydrolysis of RNA, as indicated in the Figure below? 5' His 119 RNA CH₂ H H 3 O Base 1' 12' 8-H His 12 -P-0-CH₂ a Base H H O -0-P=O H OH NH It acts as a general base, abstracting a proton from the 2' hydroxyl in order to increase its nucleophilicity. It forms an H-bond with his119 in order to stabilize the transition state. It donates a proton to improve the quality of the leaving group. It works through concerted general acid-base catalysis with his119 in order to favour the products of the reaction. Two of the above are true.

Which is not true of both ribonucleotides and deoxyribonucleotides?     Both have a phospoether bond.     Both have 3' OH groups.     Both contain nitrogenous bases     Both have a 5-membered sugar as part of the molecule.     Both have 2' OH groups

A protein has an asp glu/arg lys ratio of 3.  What would the overall charge on this molecule likely be at pH 7?    positive   negative    none of the above

The The interconversion between the two forms of guanine base shown below is called form of guanine is the one shown on the left and the from is shown on the right. H. N. H. N. H. N. H. но tautomeric shift; amino; imino deamination; amino; deaminated alkylation; alkylated; hydroxylated tautomeric shift; keto; enol oxidation; reduced; oxidized

Nucleic acids are (choose all that apply) polymers of amino acid chains M if in the form of DNA, are primarily found in the nucleus of eukaryotes V the way that organisms store their genetic "blueprints" the independent variable O composed of a nitrogen-containing base, a 5-carbon sugar, and a phosphate group polymers of nucleotides such as adenine, cytosine, guanine, thymine

using cysteine, serine, and aspartic acid create a tripeptide by performing 2 dehydration synthesis reactions

DNA differs from RNA is every way listed except for: O the purines present O the five-carbon sugar O the pyrimidines present O size

Draw two different AMINO ACID side chains forming H bond interactions with atoms on the major groove of the structure below. major groove N-Ho.. CH3 .•H-N Adenine R Thymine