a) Identify the structural features of purines and pyrimidines. (Check 2 features for each group) Purines...
a) Identify the structural features of purines and pyrimidines. (Check 2 features for each group)
Purines for the left box, and pyrimidines for the right box.
Homework Answers
Nucleic acids are long-chain polymers, in which the monomer is nucleotides. Purine and pyrimidine are building blocks of nucleic acids. The amines that form nucleic acids are classified as purines and pyrimidines. DNA and RNA have four nucleotides, in which both contain same purines (adenine and guanine) and pyrimidines (cytosine). Fourth nucleotide in DNA is thymine and in RNA it is uracil.
Pyrimidine: Pyrimidine base is heterocyclic aromatic organic compound and has 6-membered ring with two nitrogens and four carbons.
Purine: Purine base is heterocyclic aromatic organic compound and has 9-membered double ring with four nitrogen atoms and five carbons.
The structures are given below:
• Contain two heterocyclic rings.
• Contain four ring nitrogens.
• Contain one heterocyclic ring.
• Contain only two ring nitrogens.
Ans:
Classification of each of the following molecules as purine and pyrimidine is given below:
Add Answer to:
a) Identify the structural features of purines and pyrimidines.
(Check 2 features for each group)
Purines...
(a) Identify the structural features of purines and pyrimidines. (Check two features for each group). for...
(a) Identify the structural features of purines and pyrimidines. (Check two features for each group). for each group). Nap, Purines Pyrimidines: □ □ □ contain one heterocyclic ring contain two heterocyclic rings contain only two ring nitrogens contain only three ring nitrogens contain four ring nitrogens contain one heterocyclic ring contain two heterocyclic rings contain only two ring nitrogens contain only three ring nitrogens contain four ring nitrogens □ □ (b) Classify each of the following molecules as a purine...
Predominant forms at physiological pH 3. Pyrimidines and purines can exist in alternate forms, or tautomers,...
Predominant forms at physiological pH 3. Pyrimidines and purines can exist in alternate forms, or tautomers, shown here. Under common cellular conditions (physiological pH) the most common form of each purine or pyrimidine is shown on the left, and the rare tautomer on the right. Tautomers differ in the placement of hydrogen atoms and double bonds. Consider cytosine and its tautomer, the rare imino form of cytosine. Adenine Cytosine With which nitrogenous base will the imino form of cytosine most...
answer d and e d) 2-0-methyl-purines and 2-fluoro-pyrimidines were used in the selection for the RNA...
answer d and e
d) 2-0-methyl-purines and 2-fluoro-pyrimidines were used in the selection for the RNA aptamer drug Mucagen. Draw a 2-O-methyl-guanosine. Explain why this modification is important for stability of the drug. (6 points) e) Briefly describe how to use in vitro selection to make an RNA aptamer that binds tryptophan. (6 points)
Identify the structural features of para red and discuss how they contribute to this dye's color
Identify the structural features of para red and discuss how they contribute to this dye's color
2 attempts left Check my work Be sure to answer all parts. Identify the main group...
2 attempts left Check my work Be sure to answer all parts. Identify the main group to which X belongs in each ionic compound formula: (a) XF2; (b) MgX; (c) X2804 XF2 (select) MgX (select) X2804 (select)
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Check my work correctly label the following anatomical features or the neart. Hiace your cursor on...
Check my work correctly label the following anatomical features or the neart. Hiace your cursor on the boxes for more information left pulmonary artery na cava superior vena cava left atrium right coronary artery 2.67 points to pulmonary veins right ventricle eBook pulmonary trunk superior vena cava left ventricle References left ventricle aorta right atrium right ventricle left coronary artery right pulmonary veins right pulmonary artery left atrium inferior vena cava Reset Zoom
Examine the molecule below. Check the box next to each functional group the molecule contains. In...
Examine the molecule below. Check the box next to each
functional group the molecule contains. In the last column, enter
the number of each group next to the functional group names you
selected. If the molecule does not contain a listed functional
group, do not check the box and leave the last column blank.
Select all functional groups present in the molecule How many? alcohol aldehyde alkene HO alkyne amide OH amine arene HO1 carboxylic acid ester ether ketone
Examine the molecule below. Check the box next to each functional group the molecule contains. In...
Examine the molecule below. Check the box next to each
functional group the molecule contains. In the last column, enter
the number of each group next to the functional group names you
selected. If the molecule does not contain a listed functional
group, do not check the box and leave the last column blank.
Select all functional groups present in the molecule How many? alcohol aldehyde alkene н alkyne amide amine arene carboxylic acid ester ether ketone O Z
Examine the molecule below. Check the box next to each functional group the molecule contains. In...
Examine the molecule below. Check the box next to each
functional group the molecule contains. In the last column, enter
the number of each group next to the functional group names you
selected. If the molecule does not contain a listed functional
group, do not check the box and leave the last column blank.
Select all functional groups present in the molecule How many? alcohol aldehyde alkene alkyne amide amine arene carboxylic acid ester ether ketone
(a) Identify the structural features of purines and pyrimidines. (Check two features for each group). for each group). Nap, Purines Pyrimidines: □ □ □ contain one heterocyclic ring contain two heterocyclic rings contain only two ring nitrogens contain only three ring nitrogens contain four ring nitrogens contain one heterocyclic ring contain two heterocyclic rings contain only two ring nitrogens contain only three ring nitrogens contain four ring nitrogens □ □ (b) Classify each of the following molecules as a purine...
Predominant forms at physiological pH 3. Pyrimidines and purines can exist in alternate forms, or tautomers, shown here. Under common cellular conditions (physiological pH) the most common form of each purine or pyrimidine is shown on the left, and the rare tautomer on the right. Tautomers differ in the placement of hydrogen atoms and double bonds. Consider cytosine and its tautomer, the rare imino form of cytosine. Adenine Cytosine With which nitrogenous base will the imino form of cytosine most...
answer d and e
d) 2-0-methyl-purines and 2-fluoro-pyrimidines were used in the selection for the RNA aptamer drug Mucagen. Draw a 2-O-methyl-guanosine. Explain why this modification is important for stability of the drug. (6 points) e) Briefly describe how to use in vitro selection to make an RNA aptamer that binds tryptophan. (6 points)
2 attempts left Check my work Be sure to answer all parts. Identify the main group to which X belongs in each ionic compound formula: (a) XF2; (b) MgX; (c) X2804 XF2 (select) MgX (select) X2804 (select)
Check my work correctly label the following anatomical features or the neart. Hiace your cursor on the boxes for more information left pulmonary artery na cava superior vena cava left atrium right coronary artery 2.67 points to pulmonary veins right ventricle eBook pulmonary trunk superior vena cava left ventricle References left ventricle aorta right atrium right ventricle left coronary artery right pulmonary veins right pulmonary artery left atrium inferior vena cava Reset Zoom
Examine the molecule below. Check the box next to each
functional group the molecule contains. In the last column, enter
the number of each group next to the functional group names you
selected. If the molecule does not contain a listed functional
group, do not check the box and leave the last column blank.
Select all functional groups present in the molecule How many? alcohol aldehyde alkene HO alkyne amide OH amine arene HO1 carboxylic acid ester ether ketone
Examine the molecule below. Check the box next to each
functional group the molecule contains. In the last column, enter
the number of each group next to the functional group names you
selected. If the molecule does not contain a listed functional
group, do not check the box and leave the last column blank.
Select all functional groups present in the molecule How many? alcohol aldehyde alkene н alkyne amide amine arene carboxylic acid ester ether ketone O Z
Examine the molecule below. Check the box next to each
functional group the molecule contains. In the last column, enter
the number of each group next to the functional group names you
selected. If the molecule does not contain a listed functional
group, do not check the box and leave the last column blank.
Select all functional groups present in the molecule How many? alcohol aldehyde alkene alkyne amide amine arene carboxylic acid ester ether ketone
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