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Biology DNA Replication Terms
Terms in this set (26)
Semi Conservative Replication
Each half of an original DNA molecule serves as a templete for a new strand, and the two new DNA molecules each have one old and one new strand.
DNA Polymerase III
An enzyme that catalyzes the elongation of new DNA at a replication fork by the addition of nucleotides to the existing chain.
an enzyme that untwists the double helix at the replication forks, separating the two parental strands and making them available as template strands
seals the gaps in the new DNA strand (Okazaki fragments)
Keeps both strands of DNA from coiling back up on itself
The new CONTINUOUS complementary DNA strand synthesized along the template strand in the mandatory 5' --> 3' direction. New nucleotides added to the 3' end.
The strand in replication that is copied 3' to 5' as Okazaki fragments and then joined up. Works backwards.
Short fragments of DNA that are a result of the synthesis of the lagging strand during DNA replication.
a Y-shaped point that results when the two strands of a DNA double helix separate so that the DNA molecule can be replicated.
short segment of RNA used to initiate synthesis of a new strand of DNA during replication.
An enzyme that joins RNA nucleotides to make the primer.
relation between two nucleotide strands of DNA in which each purine on one strand pairs with a specific pyrimidine on the opposite strand - A and T; C and G.
The opposite arrangement of the sugar-phosphate backbones in a DNA double helix.
DNA sliding clamps attach to polymerases and slide along DNA to allow rapid, processive replication of DNA.
energy for DNA replication. Unattached nucleotides.
messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome (protein).
transfer RNA; type of RNA that carries amino acids to the ribosome.
ribosomal RNA; type of RNA that makes up part of the ribosome.
region of DNA that indicates to an enzyme where to bind to make RNA.
A coding region of a eukaryotic gene. Exons, which are expressed, are separated from each other by introns.
sequence of DNA that is not involved in coding for a protein. Spliced!
enzyme similar to DNA polymerase that binds to DNA and separates the DNA strands during transcription.
a specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid.
The organic process whereby the DNA sequence in a gene is copied into mRNA
The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm.
Difference Between DNA and RNA
DNA- Deoxyribose Sugar
RNA- Ribose Sugar
DNA- Does not leave nucleus
RNA- CAN leave nucleus
DNA- Two Stranded
RNA- Single Stranded
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