Table of Contents
- 1 What is the order of the nitrogen bases on the other side of the same DNA molecule?
- 2 What are the bases on the left side of a DNA molecule?
- 3 What is the base sequence of the complementary strand?
- 4 What is attached to the 5 and 3 ends of a nitrogenous base of DNA?
- 5 What molecule is attached to the left hand portion of the DNA molecule?
- 6 Which sequence of DNA bases would pair?
- 7 How many pairs of nitrogenous bases are in the leading strand?
- 8 How do nitrogenous bases pair up?
- 9 What is the sequence of bases from top to bottom?
What is the order of the nitrogen bases on the other side of the same DNA molecule?
Within double-stranded DNA, the nitrogenous bases on one strand pair with complementary bases along the other strand; in particular, A always pairs with T, and C always pairs with G. Then, during DNA replication, the two strands in the double helix separate.
What are the bases on the left side of a DNA molecule?
Structure of DNA It has an alternating chemical phosphate and sugar backbone, making the ‘sides’ of the ladder. In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).
What is the base sequence of the complementary strand?
DNA and RNA base pair complementarity
| Nucleic Acid | Nucleobases | Base complement |
|---|---|---|
| DNA | adenine(A), thymine(T), guanine(G), cytosine(C) | A = T, G ≡ C |
| RNA | adenine(A), uracil(U), guanine(G), cytosine(C) | A = U, G ≡ C |
What is the sequence of nitrogenous base?
As we learned in Structure of Nucleic Acids, DNA and RNA are made up by sequences of nitrogen bases-pairs: adenine, thymine, guanine, and cytosine.
What is the sequence of the nitrogen bases on the other strand?
The sequences of nitrogenous bases on the two strands of a DNA molecule are complementary. The sequence of nitrogenous bases on one strand of a DNA molecule’s double helix matches up in a particular way with the sequence on the other strand. Adenine pairs with thymine and cytosine pairs with guanine.
What is attached to the 5 and 3 ends of a nitrogenous base of DNA?
At each point of juncture within a polynucleotide, the 5′ end of one nucleotide attaches to the 3′ end of the adjacent nucleotide through a connection called a phosphodiester bond (Figure 3). It is this alternating sugar-phosphate arrangement that forms the “backbone” of a DNA molecule.
What molecule is attached to the left hand portion of the DNA molecule?
The side of the chain on the left begins with a free phosphate group at the top and ends with a sugar molecule at the bottom. In contrast, the complementary chain on the right begins at the top with a sugar molecule and ends at the bottom with a phosphate group.
Which sequence of DNA bases would pair?
The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)
What is the sequence of nitrogen bases on the other strand?
The sequence of nitrogenous bases in one strand of DNA are 3′ TAC GCG ACG 5′ .
What is the sequence of bases on a DNA molecule also known as?
A DNA molecule consists of two strands wound around each other, with each strand held together by bonds between the bases. Adenine pairs with thymine, and cytosine pairs with guanine. The sequence of bases in a portion of a DNA molecule, called a gene, carries the instructions needed to assemble a protein.
How many pairs of nitrogenous bases are in the leading strand?
Practice: The leading strand of a DNA molecule is shown. Draw a complementary lagging strand on the right side of this molecule. Challenge: This DNA strand consists of eight pairs of nitrogenous bases. How many different sequences of eight bases can you make?
How do nitrogenous bases pair up?
Summary. Base pairs occur when nitrogenous bases make hydrogen bonds with each other. Each base has a specific partner: guanine with cytosine, adenine with thymine (in DNA) or adenine with uracil (in RNA). The hydrogen bonds are weak, allowing DNA to ‘unzip’.
What is the sequence of bases from top to bottom?
The sequence of bases, from top to bottom, is opposite the sequence in the first DNA molecule. It is half the size of the first DNA molecule. It is twice the size of the first DNA molecule. Q. What is the role of enzymes in the DNA replication process? Enzymes read the DNA code and build a new DNA molecule from scratch.
What is the name of the nitrogenous base found in DNA?
Note: The names of these nitrogenous bases are adenine (red), cytosine (yellow), guanine (blue), and thymine (green). If necessary, click Reset to start the building process.