Homework Answers
the nitrogen which are
contributing its electron in aromatization of ring by resonance ,
by this resonace the electron density is delocalized at that
perticular atom and makes less nucleophilic that is less basic.
please find attached file for detailed information.
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WORKSHEET 6: ACIDS AND BASES 2. Guanine is one of the four nucleobases that form the backbone of the DNA double helix:...
Select the phrases that accurately describe properties of the most common form of the DNA double helix
Select the phrases that accurately describe properties of the most common form of the DNA double helix. There is more than one correct answer. Select all that apply. DNA contains equal amounts of adenine and thymine, and equal amounts of cytosine and guanine. A helical turn consists of about 10 nucleotides. Base pairs have a spacing of 20 A. The phosphodiester bonds between nucleotide residues run in opposite directions in the two strands. The nitrogenous bases are exposed to the solvent, whereas the sugar-phosphate backbone of...
QUESTION 11 Which is true of the structure the DNA double helix? A. The sugar-phosphate backbone...
QUESTION 11 Which is true of the structure the DNA double helix? A. The sugar-phosphate backbone faces outward. B. The nitrogen-containing bases face inward and form hydrogen bonds to one another. C. Adenine (A) bonds to Thymine (T). D. Adenine (A) bonds the Cytosine (C).
Exercise 23.6 The two sides of the DNA double helix are connected by pairs of bases...
Exercise 23.6 The two sides of the DNA double helix are connected by pairs of bases (adenine, thymine, cytosine, and guanine). Because of the geometric shape of these molecules, adenine bonds with thymine and cytosine bonds with guanine. The figure shows the thymine- adenine bond. Each charge shown is te and the H N distance is 0.110 nm. (Figure 1) Figure 1 of 1 > k 0.280 Onm Thymine Adenine k 0300 N) Part B Compare this energy with the...
DNA is the molecule used to store the genetic code of most living organisms on earth....
DNA is the molecule used to store the genetic code of most living organisms on earth. Its structure was famously proposed by Watson and Crick who proposed double helix structure published in the journal Nature, April 25, 1953. For this the Nobel Prize was awarded to Watson, Crick & Wilkins in 1962. (a) (i) (ii) Show the chemical structure of the DNA backbone. What is a 1. the backbone, 2. a nucleoside, 3. a nucleotide 4. a nucleic acid? (b)...
Below are bases used in nucleic acids. (a) why are they called bases-what allows them to act as a base? (b) the two str...
Below are bases used in nucleic acids. (a) why are they called bases-what allows them to act as a base? (b) the two strands of DNA are held together in the double helix form by hydrogen bonds between complementary base pairs. What is a hydrogen bond? (c) Suppose a new disease appears that creates covalent, rather than hydrogen, bonds between the two strands of DNA (this is VERY unlikely!). If you had to design a drug to combat the disease,...
Double click on a nitrogen of guanine that has a lone pair of electrons lying in the plane of the purine ring. (If there are few such atoms, click on one. If none, signal this by clicking on a carbon...
Double click on a nitrogen of guanine that has a lone pair of electrons lying in the plane of the purine ring. (If there are few such atoms, click on one. If none, signal this by clicking on a carbonyl oxygen.) Gray C; white H; red-O; blue N; dark green - Cl; brown Br; light green -F; purple I; yellow S; orange P. . Double click to select atoms. You can zoom in and out using the mouse scroll wheel...
DNA is formed by building blocks called __________. nucleotides nitrogenous bases polypeptides deoxyribose 0.5 points ...
DNA is formed by building blocks called __________. nucleotides nitrogenous bases polypeptides deoxyribose 0.5 points QUESTION 2 What does DNA stand for? Double-stranded Nucleic Acid Ribonucleic acid Deoxyribonucleic Acid Double-helix Nucleic Acid 0.5 points QUESTION 3 The nucleotides of DNA are held together by ___________. ionic bond hydrogen bond phosphodiester bond sugar-phosphate backbone 0.5 points QUESTION 4 DNA nucleotides with one-carbon nitrogen ring bases are called ________. adenines purines pyrimidines guanines 0.5 points QUESTION 5 Basic...
CHEM 161 "The Double Helix” Worksheet Reading (file:///C:/Users/Kayla/Desktop/Watson_The_Double_Helix.pdf) With whom was Francis Crick talking when he...
CHEM 161 "The Double Helix” Worksheet Reading (file:///C:/Users/Kayla/Desktop/Watson_The_Double_Helix.pdf) With whom was Francis Crick talking when he revealed he did not remember the structure of the four bases of DNA? What was that person's own contribution to understanding DNA structure? Watson and Crick hypothesized an early DNA structure model that they showed to Wilkins and Franklin. What were they major structural features of that model, and what was the evidence that made that model less attractive? The structure of DNA was...
please help in all sections asap! The following two drawings are resonance structures of one compound....
please help in all sections asap!
The following two drawings are resonance structures of one compound. a-o But the following two drawings are not resonance structures Not resonance structures They are, in fact, two different compounds. Choose the correct explanation(s). Select all that apply. Benzene does not have three C-C single bond and three C-C double bonds. In fact, all six C-C bonds of the ring have the same bond order and same length. Benzene have three C- single bond...
HANDOUT LAB EXERCISE TO FOLLOW LAB EXERCISE 6 IN LAB BooK 4. Look at the right-hand side of the DNA double he...
HANDOUT LAB EXERCISE TO FOLLOW LAB EXERCISE 6 IN LAB BooK 4. Look at the right-hand side of the DNA double helix on the previous page. We will call the right side, i.e. the right polynucleotide, the sense strand becs this VERTICAL nitrogen base linear sequence will determine final amino acid sequence in the protein that the DNA is coding for. The twelve triplets below represent one gene. Reading this N base sequence the blanks in Table 1 below, (the...
Exercise 23.6 The two sides of the DNA double helix are connected by pairs of bases (adenine, thymine, cytosine, and guanine). Because of the geometric shape of these molecules, adenine bonds with thymine and cytosine bonds with guanine. The figure shows the thymine- adenine bond. Each charge shown is te and the H N distance is 0.110 nm. (Figure 1) Figure 1 of 1 > k 0.280 Onm Thymine Adenine k 0300 N) Part B Compare this energy with the...
DNA is the molecule used to store the genetic code of most living organisms on earth. Its structure was famously proposed by Watson and Crick who proposed double helix structure published in the journal Nature, April 25, 1953. For this the Nobel Prize was awarded to Watson, Crick & Wilkins in 1962. (a) (i) (ii) Show the chemical structure of the DNA backbone. What is a 1. the backbone, 2. a nucleoside, 3. a nucleotide 4. a nucleic acid? (b)...
Below are bases used in nucleic acids. (a) why are they called bases-what allows them to act as a base? (b) the two strands of DNA are held together in the double helix form by hydrogen bonds between complementary base pairs. What is a hydrogen bond? (c) Suppose a new disease appears that creates covalent, rather than hydrogen, bonds between the two strands of DNA (this is VERY unlikely!). If you had to design a drug to combat the disease,...
Double click on a nitrogen of guanine that has a lone pair of electrons lying in the plane of the purine ring. (If there are few such atoms, click on one. If none, signal this by clicking on a carbonyl oxygen.) Gray C; white H; red-O; blue N; dark green - Cl; brown Br; light green -F; purple I; yellow S; orange P. . Double click to select atoms. You can zoom in and out using the mouse scroll wheel...
please help in all sections asap!
The following two drawings are resonance structures of one compound. a-o But the following two drawings are not resonance structures Not resonance structures They are, in fact, two different compounds. Choose the correct explanation(s). Select all that apply. Benzene does not have three C-C single bond and three C-C double bonds. In fact, all six C-C bonds of the ring have the same bond order and same length. Benzene have three C- single bond...
HANDOUT LAB EXERCISE TO FOLLOW LAB EXERCISE 6 IN LAB BooK 4. Look at the right-hand side of the DNA double helix on the previous page. We will call the right side, i.e. the right polynucleotide, the sense strand becs this VERTICAL nitrogen base linear sequence will determine final amino acid sequence in the protein that the DNA is coding for. The twelve triplets below represent one gene. Reading this N base sequence the blanks in Table 1 below, (the...
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