1. During both DNA replication and PCR the DNA double helix must be unwound. Explain how...
1. During both DNA replication and PCR the DNA double helix must be unwound. Explain how this is achieved during each process.
2. A methylguanosine cap and poly A tail are added to what molecule? Why are these processing steps important for the cell?
Homework Answers
1. During both DNA replication and PCR the DNA double helix must be unwound, in DNA replication process DNA strand are unwound by enzyme called helicase which break hydrogen bonds between two strands, and in PCR it is achieved by high temperature at 94 degree C.
2. A methylguanosine cap and poly A tail are added to mRNA molecule after transcription, these modification of mRNA is important because it protect mRNA from enzymatic degradation in cytoplasm also help to bind mRNA to translation complex.
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1. During both DNA replication and PCR the DNA double helix must
be unwound. Explain how...
During both DNA replication and PCR the DNA double helix must be unwound. Explain how this...
During both DNA replication and PCR the DNA double helix must be unwound. Explain how this is achieved during each process.
44. During DNA replication, the double helix is unwound, creating two single strands. One of these...
44. During DNA replication, the double helix is unwound, creating two single strands. One of these is called the strand, on which the progress of DNA Polymerase III is – 45. The other strand is called the strand, on which the synthesis is 16. During DNA replication, synthesis of a new sequence on the Leading Strand is continuous. Why is synthesis on the Lagging Strand discontinuous? 47. Generation of Okazaki fragments proceeds in three steps. Indicate which of the following...
1. Explain why, when PCR is used to amplify the same region of DNA from two...
1. Explain why, when PCR is used to amplify the same region of DNA from two different people, the size of the DNA fragment(s) generated may be different? 2. What characteristic of the DNA molecule makes it possible to use electrophoresis to separate DNA molecules by size? Explain why this characteristic is important for electrophoresis and what part of the DNA molecule creates this characteristic. 3. You are performing PCR. After four cycles of PCR, how many double-stranded copies of...
Complete each sentence to explain DNA replication. three parent strand as the During DNA replication, the...
Complete each sentence to explain DNA replication.
three parent strand as the During DNA replication, the double-stranded DNA bonds connecting the parent strands are broken. hydrogen covalent An enzyme called is responsible for this step. DNA polymerase helicase New position themselves along the parent strands through nucleotides two The nucleotides are joined to each oth by an enzyme called complementary base pairing unwinds Now, new daughter DNA molecules are produced, each consisting of one old and one new rendering DNA...
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...
Directions: Read through each question thoroughly. through your assignment tab. Highlight the correct answer. Submit the quiz 1. Which enzymes are responsible for adding nucleotides to the DNA mo...
Directions: Read through each question thoroughly. through your assignment tab. Highlight the correct answer. Submit the quiz 1. Which enzymes are responsible for adding nucleotides to the DNA molecule during DNA replication? a) DNA replicase b) DNA polymerase c) DNA catalase d) DNA gyrase 2. A bacterial cell with faulty RNA polymerase would not be able to carry out a) DNA replication b) double helix formation c) DNA supercoiling d) transcription 3. R plasmids are of particular concern to humans...
BIU A A E 8. A DNA molecule has two strands (double helix) – how many...
BIU A A E 8. A DNA molecule has two strands (double helix) – how many of its strands are/is used during replication and transcription? 9. What is the difference between transcription and translation occurring in Prokaryotes and eukaryotes? 10. What is the relation between mRNA and genetic code? 11. Using genetic code table-list the corresponding aminoacids for triplet code: CAG, GAG, CAC, AUA, GUA, GCA and UGA, UAA and UAG 12. How many start and stop codons are there?...
1. DNA is coiled around what type of proteins to form nucleosomes A. Polymerases DNA replication...
1. DNA is coiled around what type of proteins to form nucleosomes A. Polymerases DNA replication of the lagging strand is discontinuous B. Transcription factors DNA replication of the lagging strand is continuous C. Helicases D. Histones E. DICER 2. Which of the following statements is true? A. DNA replication of the leading strand is discontinuous B. DNA replication of the lagging strand is discontinuous C. DNA replication of the leading strand is dispersive D. DNA replication of the lagging...
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...
44. During DNA replication, the double helix is unwound, creating two single strands. One of these is called the strand, on which the progress of DNA Polymerase III is – 45. The other strand is called the strand, on which the synthesis is 16. During DNA replication, synthesis of a new sequence on the Leading Strand is continuous. Why is synthesis on the Lagging Strand discontinuous? 47. Generation of Okazaki fragments proceeds in three steps. Indicate which of the following...
Complete each sentence to explain DNA replication.
three parent strand as the During DNA replication, the double-stranded DNA bonds connecting the parent strands are broken. hydrogen covalent An enzyme called is responsible for this step. DNA polymerase helicase New position themselves along the parent strands through nucleotides two The nucleotides are joined to each oth by an enzyme called complementary base pairing unwinds Now, new daughter DNA molecules are produced, each consisting of one old and one new rendering DNA...
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...
Directions: Read through each question thoroughly. through your assignment tab. Highlight the correct answer. Submit the quiz 1. Which enzymes are responsible for adding nucleotides to the DNA molecule during DNA replication? a) DNA replicase b) DNA polymerase c) DNA catalase d) DNA gyrase 2. A bacterial cell with faulty RNA polymerase would not be able to carry out a) DNA replication b) double helix formation c) DNA supercoiling d) transcription 3. R plasmids are of particular concern to humans...
BIU A A E 8. A DNA molecule has two strands (double helix) – how many of its strands are/is used during replication and transcription? 9. What is the difference between transcription and translation occurring in Prokaryotes and eukaryotes? 10. What is the relation between mRNA and genetic code? 11. Using genetic code table-list the corresponding aminoacids for triplet code: CAG, GAG, CAC, AUA, GUA, GCA and UGA, UAA and UAG 12. How many start and stop codons are there?...
1. DNA is coiled around what type of proteins to form nucleosomes A. Polymerases DNA replication of the lagging strand is discontinuous B. Transcription factors DNA replication of the lagging strand is continuous C. Helicases D. Histones E. DICER 2. Which of the following statements is true? A. DNA replication of the leading strand is discontinuous B. DNA replication of the lagging strand is discontinuous C. DNA replication of the leading strand is dispersive D. DNA replication of the lagging...
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...
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