Question

Which of the following is correct about DNA replication? A. Replication begins from one end of...

Which of the following is correct about DNA replication? A. Replication begins from one end of the molecule, and ends at the other end. B. A type of RNA polymerase is the enzyme that lays down the first nucleotide of the daughter strand. C. Replication occurs in one chromosome at a time. D. DNA polymerase III and the primase have opposite directions of functions. E. At the end of replication, two DNA molecules are present- the original molecule, and a newly synthesized DNA molecule.

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Option B is correct.

Explanation:

Replication is bidirectional.

Replication occurs at multiple locations in all the chromosomes simultaneously.

All the polymerases (DNA or RNA) have only 5' ---> 3' polymerase property. No polymerase is found with a 3' ---> 5' polymerase function.

DNA replication is semiconservative. So, both the daughter molecules contain a parent strand at the end of replication.

Primase is required for DNA replication as DNA polymerase can only extend an existing stand but can not initiate strand synthesis de novo. Primase is a DNA dependent RNA polymerase that synthesizes RNA primers on DNA template for the initiation of DNA replication.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The prokaryotic replication enzyme that removes and replaces primers is _______. a. ligase b. DNA polymerase...
The prokaryotic replication enzyme that removes and replaces primers is _______. a. ligase b. DNA polymerase I c. primase d. DNA polymerase II Primers are found on: a. only Okazaki fragments. b. both the leading and lagging strands. c. only the leading strand. d. only the lagging strand. e. DNA polymerase III. Which replication enzyme seals the nicks between Okazaki fragments? a. Primase b. DNA polymerase I c. DNA LIgase d. Topoisomerase The first step in the replication of DNA...
Which of the following statements about DNA synthesis at the replication fork of a replicating DNA...
Which of the following statements about DNA synthesis at the replication fork of a replicating DNA molecule is FALSE? Select one: a. One of the two new strands must be synthesized in fragments because the two strands have opposite directionality. b. More than one of the other answer choices is false. c. The sequence of each newly synthesized single strand is identical to that of the parental single strand that served as its template. d. Double-stranded DNA synthesis requires both...
1. This enzyme replaces RNA primers with a compatible DNA segment. RNA Primase DNA Polymerase III...
1. This enzyme replaces RNA primers with a compatible DNA segment. RNA Primase DNA Polymerase III Topoisomerase DNA Polymerase I 2. This class of enzymes prevent DNA molecules from damaging themselves by relieving strain, untangling, cutting and rejoining strands. They will ride ahead of the replication fork preventing over-winding. Helicase DNA Ligase Topoisomerase RNA polymerase 3. This type of molecule prevents the two separated strands of DNA in a replication bubble from re-establishing their hydrogen bonds ("reannealing"). DNA Polymerase III...
Which of the following statements is incorrect about DNA replication? -The ends of eukaryotic chromosomes are...
Which of the following statements is incorrect about DNA replication? -The ends of eukaryotic chromosomes are replicated using single stranded DNA repeats and DNA polymerase -Post-replication mismatch repair is one mechanism that enhances the accuracy of DNA replication. -DNA replication is semi-conservative such that each daughter chromosome contains a single strand of DNA from the parental cell. -DNA replication is regulated so that it occurs only once during the cell cycle, in most eukaryotic cells. -Eukaryotic chromosomes tend to have...
What can you infer from the information presented in this table? Proteins Involved in DNA Synthesis...
What can you infer from the information presented in this table? Proteins Involved in DNA Synthesis Process Protein Function Opening the helix Helicase SS binding proteins Topoisomerase Breaks hydrogen bonds between base pairs Stabilizes single-stranded DNA Breaks and rejoins DNA strand to untwist the double helix Synthesis of leading strand Primase DNA polymerase III Sliding clamp Catalyzes the synthesis of the RNA primer Adds bases to the growing DNA strand Holds DNA polymerase in place during strand elongation Synthesis of...
Put the steps of initiation of DNA replication in their correct sequence.       -   ...
Put the steps of initiation of DNA replication in their correct sequence.       -       1.       2.       3.       4.       5.       DNA polymerase catalyzes the synthesis of new DNA by adding deoxyribonucleotides, beginning by attaching the first to the 3' hydroxyl (-OH) of the last ribonucleotide in the primer.       -       1.       2.       3.       4.       5.      ...
1.When a protein binds to DNA at a site defined by a particular nucleotide sequence, with...
1.When a protein binds to DNA at a site defined by a particular nucleotide sequence, with which parts of the DNA does the protein primarily interact? A. the phosphate and deoxyribose groups in the DNA backbone B. the phosphate and deoxyribose groups in the DNA backbone, and hydrophobic interactions with the nucleotide bases C. nucleotide bases within the major grooves of the DNA D. nucleotide bases within the major and minor grooves of the DNA E. none of the above...
1. What determines the sequence of nucleotides on the newly synthesized strands during DNA replication? a....
1. What determines the sequence of nucleotides on the newly synthesized strands during DNA replication? a. the nucleotide sequence of the template strand b. the way that the parental DNA strands are untangled by topoisomerase. c. the genetic code, as specified by the RNA reading frame d. the nucleotide sequence of the coding strand 2. A difference between meiosis and mitosis is that_________. a. DNA replication occurs twice in meiosis but only once in mitosis b. sister chromosomes are always...
ANSWER KEY Recombinant DNA Anticodon Mutation Uracil Codon Replication tRNA Thymine Antiparallel Translation Transcription Polymerase Chain...
ANSWER KEY Recombinant DNA Anticodon Mutation Uracil Codon Replication tRNA Thymine Antiparallel Translation Transcription Polymerase Chain Reaction Match the correct answer with the corresponding statement. A base found in RNA but not DNA A base found in DNA but not RNA The opposite directions run by two strands of DNA double helix Protein synthesis When mRNA is synthesized from DNA When a strand of DNA makes a new copy prior to cell division The RNA that carries amino acids to...
Which of the following statements about DNA repair is correct during excision repair, an exonuclease is...
Which of the following statements about DNA repair is correct during excision repair, an exonuclease is the first enzyme involved in removing a single-stranded segment of DNA from the template strand none of the answer is correct during mismatch repair, a methylated guanine in the consensus sequence GATC found on the parent strand activates the Mut complex the Okazaki fragments synthesized during base excision repair are synthesized in a 3’ -- > 5’ fashion repair of methylated DNA requires a...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT