Concept explainers
Construct a table that organizes the following terms, end label the columns and rows.
Monosaccharides | Polypeptides | Phosphodiester linkages |
Fatly acids | Triacylglycerols | Peptide bonds |
Amino acids | Polynucleotides | Glycosidic linkages |
Polysaccharides | Ester linkages |
DRAW IT Copy the polynucleotide strand in Figure 3.27a and label the bases G, T, C, and T. starting from the 5′ end. Assuming this is a DNA polynucleotide, now draw the complementary strand, using the same symbols for phosphates (circles), sugars (pentagons), and bases. Label the bases. Draw arrows showing the 5′ → 3′ direction of each strand. Use the arrows to make sure the second strand is antiparallel to the first. Hint: After you draw the first strand vertically, turn the paper upside down; it is easier to draw the second strand from the 5′ toward the 3′ direction as you go from top to bottom.
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- Which of the following is true of the molecule below? nucleotide 5' 3′ H₂C H₂C TNHNA O. HN CNH…NG NH O NH O HNU NH O CNHNG OHN nucleoside CH₂ CH₂ a purine pairs with a pyrimidine base the bases are held together by covalent bonds a nucleoside is made of the same components as a nucleotide The bases make up the backbone on the sides of the moleculearrow_forwardIn a DNA oligonucleotide, two nucleosides are linked together with a: Phosphodiester bond Phosphatic bond Phosphoester bond Glycosidic bondarrow_forwardDraw the structure of histidylthreonine, a dipeptide made from histidine and threonine, as it would appear at physiological pH. Explanation Click and drag to start drawing a structure. Chock 0, X 0 :0 E Ahmarrow_forward
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