Which of the following regarding DNA replication is FALSE. Replication of DNA is highly regulated. ODNA is the only biomolecule that can be replicated. Replication is an amazingly complex process: it is amazing that can occur in a physiologically relevant time frame. The fact that DNA can be replicated allows it to serve as the genetic material. The progeny receive one strand that originated from the parent and one newly synthesized strand.
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- Which of the following replication proteins is incorrectly paired with it’s function? DNA polymerase - adds nucleotides to the growing strand Single stranded binding proteins - hold the DNA strands apart while they are being replicated Ligase - enhances separation of DNA strands Topoisomerase - relieves torsional stress due to unwinding by the DNA Primase - synthesizes a short RNA sequence to initiate replicationWhich of the following statements about replication is false? The proofreading function of DNA polymerases involves 3’ 5’ exonuclease activity. Origins of replication are rich in G-C nucleotide pairs. A characteristic of aging cells is that telomeres become shorter. The lagging strand is synthesized in the opposite direction as the movement of the replication fork. DNA polymerase is more accurate that RNA polymerase.As DNA is replicated, both continuous and discontinuous replication occur. Discontinuous replication is the result of which specific feature of DNA? major groove antiparallel strands action of helicase at the replication fork purine and pyrimidine nucleotides covalent bonds
- (Select one answer from each dropdown menu:) DNA replication uses as templates to make an Choose one: GAUDIe copy of a DNA molecule. complementa DNA replication is known exact molecule has 1 original stChoose one: 1 new strand of DNA. This ensures the conservation of genetic information. because each new DNA (Select one answer from each dropdown menu: ) In mitosis, the goal is to get cells that are genetically Choose one: This process is used to make Choose one: Match the following Mitosis stages to what happens Prophase Metaphase Anaphase Telophase a. sister chromatids pull apart to opposite ends of cell b. chromosomes line up at the equator of the cell c. Nuclear envelope reforms and chromosome loosen d. nuclear envelope disappears, chromosoměs a. condense During what phase does the cytoplasm divide? (Select one answer from dropdown menu:) Choose one: (Select one answer from each dropdown menu and fill in the blank:) In meiosis, the goal is to get cells that are genetically Choose…Which of the following best describes the process of DNA replication? (type 1, 2 or 3 in the blank) conservative model semi-conservative model dispersive model The model that best describes DNA replication essentially means the DNA is kept intact and a copy is made by enzymes the DNA is separated and a new daughter copy is paired to each parental strand the DNA is dispersed into small nucleotide segments and copied pieces are inserted into the gapsSome Processes Involved in DNA Replication The replication origin is identified. DNA primase builds RNA primer. Okazaki fragments are spliced by DNA ligase. Helicases bind and uncoil the DNA double helix. RNA primer is the starting point for DNA polymerase. DNA replication ends at the telomere where DNA codes for termination. DNA polymerase adds complementary nucleotides in the 5' to 3' direction in short segments called Okazaki fragments. The sequence in which the events numbered above occur during DNA replication of the lagging strand is:
- Some Processes Involved in DNA Replication The replication origin is identified. DNA primase builds RNA primer. Okazaki fragments are spliced by DNA ligase. Helicases bind and uncoil the DNA double helix. RNA primer is the starting point for DNA polymerase. DNA replication ends at the telomere where DNA codes for termination. DNA polymerase adds complementary nucleotides in the 5' to 3' direction in short segments called Okazaki fragments. The sequence in which the events numbered above occur during DNA replication of the lagging strand is Answer, Answer, Answer, Answer, Answer, Answer, and Answer.DNA replication begins on a double helix at specific sites, called origins of replication where DNA polymerases make the covalent bonds between the nucleotides of a new DNA strand and replication then proceeds in both directions. Select one: True Falsecytosine In DNA, guanine always forms hydrogen bonds with The process of eplication produces a new copy of an organism's genetic information, which is pass What is the first step in the process of DNA replication? Unzip the DNA Which enzyme is responsible for "unzipping" the DNA double helix? helicase Which enzyme is responsible for assembling the DNA during replication? DNA polymerase Why is DNA replication important to the growth and development of a multi-cellular organism? Because the daughter cells need a complete set of DNA Write the complementary bases of the strand below according to the base-pair rule. ATCCAGTAG GAC TAGGICATCCTG Writing a Full Strand: 1. A. Original DNA: Complementary DNA: CCT ATA TCT CTC TAT ATC TCT CAT ACT GTG TGT CTC TAT B. Make identical strands of DNA CCT ATA TCT CTC TAT ATC TCT CAT ACT GTG TGT CTC TAT (original) (new) A. Original DNA: Complementary DNA: (new) (complementary from 1A) CCG GAT TTT AAT TAG CTA CTA TCG TAC TAC GTT GGT GCT B. Make identical…
- Replication of nuclear DNA begins at the Ori (origin of replication). True or falseWhich of the following statements regarding the fidelity of DNA replication is true? DNA polymerase has a 3'-5' exonuclease activity that removes incorrectly paired nucleotides. The DNA polymerase active site is highly flexible and can easily 'fit' incorrectly paired incorporated nucleotides. I. DNA polymerase never makes an error in the nucleotide being incorporated. The stability of base pairing is not a factor in controlling the fidelity of nucleotide incorporation during replication. IV. DNA polymerase has evolved to make errors at a relatively high rate because this is what drives evolution. OV.Which of the following are true about bacterial DNA replication compared to DNA replication in humans (eukaryotes) (select all that apply) Bacteria can replicate their entire genome more quickly than human cells can Bacteria DNA replication uses more types of DNA polymerase than human cells do Bacteria can replicate DNA continuously, but eukaryotes wait for the S phase of the cell cycle Bacterial DNA replication does not require helicases, because the chromosome is circular DNA sequence where replication initiates are rich in A's and T's in eukaryotes, but not in bacteria Bacteria have more origins of replication than human chromosomes do