DNA Replication
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| DNA synthesis | DNA Replication
🗑
|
||||
| RNA synthesis | Transcription
🗑
|
||||
| Protein synthesis | Translation
🗑
|
||||
| Gene expression proceeds from DNA --> RNA --> Protein | Basic Dogma of Biology
🗑
|
||||
| In prokaryotes replication occurs in the | Cytoplasm
🗑
|
||||
| IN eukaryotes replication occurs in the ... during ... | Nucleus, S phase
🗑
|
||||
| Non-dividing cells are blocked in ... and do not progress into ... | G0 phase, S phase
🗑
|
||||
| The requirments of DNA replication are | DNA POlymerase, Mg++, Template, Primer, dNTPs
🗑
|
||||
| The directioin the DNA replication occurs is | 5' to 3'
🗑
|
||||
| For each A of the template strand, a T is added to the new strand, and each G is matched with a C | Complimentary
🗑
|
||||
| 3' to 5' exonuclease activity removes mismatched nucleotides | Proofreading
🗑
|
||||
| Replication proceeds in both directions form central origins of replications | Bidirectional
🗑
|
||||
| Sequneces where DNA replication beins. A central origin of replication | Ori
🗑
|
||||
| The lagging strand is synthesized as short stretches | Discontinuous
🗑
|
||||
| One strand of a daughter chromosomes is newly synthesized, the other templated strand is inherited intact from the parental chromosome` | Semiconservative
🗑
|
||||
| The enzyme that catalyzed polymerization of dNTPs into DNA | DNA Polymerase (Pol #)
🗑
|
||||
| This polymerase is located in the nucleus, its function is leading strand synthesis, it can process >100,000 bp, it is able to proofread, it uses an RNA primer | Pol δ
🗑
|
||||
| This polymerase is located in the nucleus, its funciton is lagging strand synthesis, it can process ~ 180 bp, it is not able to proofread, it uses an RNA primer | Pol α
🗑
|
||||
| This polymerase is found in the nucleus, its function is filling in gaps for repair, it can process ~20 bp, it is unable to proofread, it does not use an RNA primer | Pol β
🗑
|
||||
| This polymerase is found in the mitochondria, its function is synthesis of both strands, it can process > 8,300 bp, its is able to proofread, it does not use an RNA primere | Pol γ
🗑
|
||||
| What cofactor is required for DNA polymerase activity | Mg++
🗑
|
||||
| To synthesize a new strand, DNA polymerase must read a preexisting strand known as the | Template
🗑
|
||||
| The bulding blocks of DNA. All four are required for replication | Deoxyribonucleotidess (dNTPs)
🗑
|
||||
| This is a free hydroxyl at the 3' position of the terminal nucleotide of a previously existing strand. | Primer
🗑
|
||||
| The short discontinuous stretches synthesized in the correct 5'-3' direction on the lagging strand | Okazaki fragments
🗑
|
||||
| A region of a eukaryotic chromosome that is replicated as a unit, from one central ori | Replicon
🗑
|
||||
| An enzyme that unwinds DNA. ONe of the first factors to bind an oir, where it serves to open the double helix so the DNA polymerase can replicate the strands. It becomes part of the replication apparatus, so it serves in extension as well as initiation. | Helicase
🗑
|
||||
| Factors that stabilize single stranded DNA by preventing it from winding back inot a soube helix | Single Stranded Binding Proteins
🗑
|
||||
| A cluster of factors assebled around helicase to replicate DNA. | DNA Replication Apparatus
🗑
|
||||
| The components of the DNA replication apparatus are | Helicase, Pol δ, Pol α, β Clamp, and Primase
🗑
|
||||
| The ring like protein that wraps around DNA to stabilize the association of th ereplication apparatus. It is required for Pol δ processivity. Without it, the Pol δ only replicates short oligonucleotides | β clamp
🗑
|
||||
| As the replication apparatus proceeds, this strand is continously synthesized in the normal 5' to 3' direction. | Leading Strand
🗑
|
||||
| As the replication apparatus proceeds, this strand is discontinously synthesized as short stretches called Okazaki Fragments | Lagging Strand
🗑
|
||||
| This enzyme binds to unwound laggin strand template and transcribes a short stretch of RNA. This RNA serves as a primer, providing the 3' OH group required by Pol α. | Primase
🗑
|
||||
| This enzyme uses the RNA primer to synthesize an Okazaki fragment of th elagging strand. | Pol α
🗑
|
||||
| This enzyme digest any RNA. In replication, it serves to remove the lagging strand primers. | RNAase
🗑
|
||||
| In replicatioin,mm it fills the gaps left after the RNA primers are removed. | Pol β
🗑
|
||||
| This enzyme binds any free 3' hydroxyls and 5' pohosphates of DNA. In replication, it seals the nicks between the Okazaki fragments left by Pol β | DNA ligase
🗑
|
||||
| This serves to restore the DNA to the proper level os supercoiling during replication | Topoisomerase
🗑
|
||||
| The eynzyme that fills in the overhanging gap that on a chromosome that cannot be filled in by a DNA polymerase. It is a reverse transcriptase. It not only fills in the gap but also extends the length of the telomeres. | Telomerase
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
mhaynes
Popular Medical sets