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- The nucleotides are very specific as to which bond together. The four nucleotides are:Adenine (A) Thymine (T)Guanine (G) Cytosine (C)They are written out in this order because Adenine always bonds with Thymine and Cytosine alwaysbonds with Guanine. Draw a line connecting those so you remember.Let’s practice making complementary strands. DNA: T-A-C-T-T-A-C-A-C-G-T-C-A-A-C-G-T-G-C-C-T-T-A-G-C-C-A-T-TDNA: A-T-GGo ahead and write out the complementary strand to the strand above continuing where we left off.List the DNA bases that will complementary base pair with the following sequence: A-G-C-T-A-C-GIn the DNA structure, a purine molecule always binds with a pyrimidine molecule. How would you expect the structure to differ if Adenine forms base pairing with Guanine and Cytosine forms base pairing with Thymidine? Instead of A-T, G-C; can it be A-G, C-T? Justify your answer within five sentences
- Match the correct bases pairs to find the opposite strand of DNA strand of DNA - T G C A A T G C C C G T A T A T G C C A complementary strand -In a double-stranded DNA molecule, how are the sequences of each strand related to each other? The sequences are identical. The sequences are identical except that one strand nas a U where the other strand has a T. The sequences are the reverse compliment of eadh other and use the nucleotides, A, G. U, and C only. The sequences are the reverse complement of each otherDraw a stylized diagram of double-stranded DNA. Use a pentagon for sugar, a circle for phosphate and a square for bases. Label each base A, T, C or G. Show two pairs of nucleotides connected via hydrogen bonds (use all 4 letters). Show the polarity of each strand and clearly indicate the number of hydrogen bonds in each pair of nucleotides. Draw a solid-line circle around a nucleotide. Draw a dashed-line circle around a nucleoside. Indicate a phosphodiester bond using an arrow.
- One nucleotide strand of a DNA molecule has the base sequence illustrated below. 5′ –ATTGCTACGG–3′ Give the base sequence and label the 5′ and 3′ ends of the complementary DNA nucleotide strand.What property/characteristics can definitely be concluded from the given composition of a DNA? A = 15% C = 52% T= 24% G = 49% The DNA is double stranded The DNA is single stranded The DNA has supercoiled structures The DNA has a high Tm The DNA has a B conformationExamine the 5'- 3 sequence of bases of the DNA molecules (A D) shown below. I am only showing you the 5 - 3' strand of each molecule, but you can imagine the complementary 3' - 5' strand for each molecule. Which double-stranded molecule is held together by 10 hydrogen bonds? O AAAT O ATAG O TGTC O GCGA
- What is the nucleotide sequence of the complementary strand of the DNA molecule: 5’-AATGCGATCTTCAT-3’? Indicate the 5’ and 3’ ends. Follow the same format as the given sequence.Which one of these facts would NOT be needed in order to determine the correct base sequence from the image of DNA in the question above? Adenine and guanine are purines with a two-ring chemical structure. Cytosine and thymine are pyrimidines with a one-ring chemical structure. Adenine pairs only with thymine using two hydrogen-bonds. Cytosine pairs only with guanine using three hydrogen-bonds. All of the facts above are needed.What type of bond is the arrow pointing to in this image of DNA? -Hydrogen Bond-Covalent Bond-Ionic Bond