Which of the following is true? a. The two strands of a DNA molecule are held...
Which of the following is true?
| a. |
The two strands of a DNA molecule are held together by covalent bonds. |
|
| b. |
Hydrogen bonding between complementary base pairs causes the DNA molecule to twist into a spiral. |
|
| c. |
A single strand within a DNA molecule is held together by hydrogen bonds. |
|
| d. |
The bases on one strand of DNA are held to the bases on the other strand by hydrogen bonds. |
Homework Answers
D is the correct answer because bases one strand are joined to base on another strand by hydrogen bond.2 hydrogen bond formed between A and T and 3 hydrogen bond formed between G and C
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Which of the following is true?
a.
The two strands of a DNA molecule are held...
1 out of 8 attempts The two strands of the DNA molecule are held together by...
1 out of 8 attempts The two strands of the DNA molecule are held together by hydrogen bonds between base pairs. When an enzyme unzips the molecule to separate the two strands, it has to break these hydrogen bonds. A simplified model represents a hydrogen bond as the electrostatic interaction of four point charges arranged along a straight line. The figure shows the arrangement of charges for one of the hydrogen bonds between adenine and thymine. Estimate the energy that...
DNA is a double-stranded molecule where two polynucleotide strands run antiparallel to each other, and the...
DNA is a double-stranded molecule where two polynucleotide strands run antiparallel to each other, and the bases on one strand are complementary to the bases on the opposite strand. If one strand of a DNA molecule has the following sequence of bases, what would the sequence be for the complementary, antiparallel DNA strand? 3' GCTGATCAGGAC 5'
How DNA Is Copied 4. What does it mean that the two strands of DNA are...
How DNA Is Copied 4. What does it mean that the two strands of DNA are complementary? 5. What is DNA replication?, 6. Using your notes, book, and this assignment, place the steps of DNA replication in the correct order. a. The enzyme DNA polymerase moves along the exposed strands and adds complementary nucleotides to each nucleotide in each existing strand. b. The DNA double helix breaks or unzips down the middle between the base pairs. C. A complementary strand...
Question 1 1 pts Why is it important for DNA to have complementary base pairing? O...
Question 1 1 pts Why is it important for DNA to have complementary base pairing? O Complementary base pairing allows base pairs to be packed in the most energetically favorable arrangement inside of the double helix structure. O Complementary base pairing will pair a purine with a purine, which are a similar width, thus they are able to hold the sugar-phosphate backbone an equal distance apart along the DNA molecule o Complementary base pairing is only important for maintaining the...
DNA Worksheet DNA by the numbers : Write the correct number in each blank ( when...
DNA
Worksheet
DNA
by the numbers : Write the correct number in each blank ( when
necessary, assume we are talking about B DNA).
________ DNA strands in a double helix
________ hydrogen bonds in an A-T base pair
________ hydrogen bonds in a G-C base pair
_______nucleotides in one turn of a double helix
____nm between two bases on a strand of DNA
________ nm in one turn of a double helix
________ nm in diameter
________ the end...
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,...
DIN ANL and Protein Smith 6. Replicate each of the strands of DNA by moving the...
DIN ANL and Protein Smith 6. Replicate each of the strands of DNA by moving the complementary nucleotides into place ONE AT A TIME, beginning at the end of each strand as shown in the photo 7. Compare the base sequences in the strands of these two new DNA molecules with each other, and also with the original strand. Are they identical molecules? 8. Point to the two strands of the original DNA molecule. Note that an original strand represents...
In the DNA double helix, 2 strands of DNA are joined together through the hydrogen bonding...
In the DNA double helix, 2 strands of DNA are joined together through the hydrogen bonding of the individual base pairs. The base Guanine bonds to which other base. Answers: a. uracil b. cytosine c. thymine d. adenine
Enter your answer in the provided box. Given two complementary strands of DNA containing 1.01 X...
Enter your answer in the provided box. Given two complementary strands of DNA containing 1.01 X 102 base pairs each, calculate the ratio of two separate strands to hydrogen-bonded double helix in solution at 3.49 x 10² K. (Hint: The formula for calculating this ratio is e-SE/RT, where AE is the energy difference between hydrogen-bonded double-strand DNAs and single-strand DNAs and R is the gas constant.) Assume the energy of hydrogen bonds per base pair to be 7.70 x 102...
Heat can disrupt hydrogen bonding between DNA strands, causing denaturation. Which of the following DNA strands...
Heat can disrupt hydrogen bonding between DNA strands, causing denaturation. Which of the following DNA strands would have the HIGHEST denaturation temperature considering the different number of base pairs between the various bases? 10% AT and 90% GC 90% AT and 10% GC 50% AT and 50% GC 70% AT and 30% GC 30% AT and 70% GC
1 out of 8 attempts The two strands of the DNA molecule are held together by hydrogen bonds between base pairs. When an enzyme unzips the molecule to separate the two strands, it has to break these hydrogen bonds. A simplified model represents a hydrogen bond as the electrostatic interaction of four point charges arranged along a straight line. The figure shows the arrangement of charges for one of the hydrogen bonds between adenine and thymine. Estimate the energy that...
How DNA Is Copied 4. What does it mean that the two strands of DNA are complementary? 5. What is DNA replication?, 6. Using your notes, book, and this assignment, place the steps of DNA replication in the correct order. a. The enzyme DNA polymerase moves along the exposed strands and adds complementary nucleotides to each nucleotide in each existing strand. b. The DNA double helix breaks or unzips down the middle between the base pairs. C. A complementary strand...
Question 1 1 pts Why is it important for DNA to have complementary base pairing? O Complementary base pairing allows base pairs to be packed in the most energetically favorable arrangement inside of the double helix structure. O Complementary base pairing will pair a purine with a purine, which are a similar width, thus they are able to hold the sugar-phosphate backbone an equal distance apart along the DNA molecule o Complementary base pairing is only important for maintaining the...
DNA
Worksheet
DNA
by the numbers : Write the correct number in each blank ( when
necessary, assume we are talking about B DNA).
________ DNA strands in a double helix
________ hydrogen bonds in an A-T base pair
________ hydrogen bonds in a G-C base pair
_______nucleotides in one turn of a double helix
____nm between two bases on a strand of DNA
________ nm in one turn of a double helix
________ nm in diameter
________ the end...
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,...
DIN ANL and Protein Smith 6. Replicate each of the strands of DNA by moving the complementary nucleotides into place ONE AT A TIME, beginning at the end of each strand as shown in the photo 7. Compare the base sequences in the strands of these two new DNA molecules with each other, and also with the original strand. Are they identical molecules? 8. Point to the two strands of the original DNA molecule. Note that an original strand represents...
Enter your answer in the provided box. Given two complementary strands of DNA containing 1.01 X 102 base pairs each, calculate the ratio of two separate strands to hydrogen-bonded double helix in solution at 3.49 x 10² K. (Hint: The formula for calculating this ratio is e-SE/RT, where AE is the energy difference between hydrogen-bonded double-strand DNAs and single-strand DNAs and R is the gas constant.) Assume the energy of hydrogen bonds per base pair to be 7.70 x 102...
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