DNA and Replication
The enzyme that unwinds DNA at the start of replication.
What is Helicase
Transcription happens in this part of a eukaryotic cell.
What is the nucleus?
Translation occurs at this cellular structure.
What is the ribosome?
What is the operon model?
A mutatuion that changes one base but doesn't change the amino acid.
What is a silent mutation?
DNA strands are said to be orientated in these opposite directions.
What is antiparallel?
This enzyme makes RNA from a DNA template.
What is RNA Polymerase?
This molecule brings amino acids to the ribosome.
What is tRNA?
The lac operon is this kind of operon-it is off until turned on.
What is inducible?
This mutation shifts the reading frame of the genetic message.
What is a frameshift mutation?
This type of replication uses one strand and one new strand.
What is semi-conservative replication?
These noncoding sections are remoed from pre-mRNA.
WHat are introns?
The codon AUG codes for this amino acid and serves as a start signal.
What is methionine?
These bind to enhancers to activate transcription in eukaryotes.
What are transciption factors?
This lab technique amplifies DNA.
What is PCR (Polymerase Chain Reaction)?
These short sequence of RNA is laid down to start DNA replication and is later replaced by DNA.
What is a primer?
Name two modifications made to eukaryotic mRNA before it leaces the nucleus.
What are the 5' cap and poly-A tail?
This three-base sequence on tRNA pairs with mRNA codons.
What is an anitcodon?
This region of an operon acts as the on/off switch and is where a repressor protein can bind.
What is the operator?
This tool allows scientist to cut and edit specific DNA sequences.
What is CRISPR-Cas9?
This enzyme adds nucleotides and proofreads during replication.
What is DNA polymerase?
This DNA sequence signals RNA polymerase to begin trascription.
What is a promoter?
What are the three stop codons?
What are UAA, UAG, UGA?
This protein blocks transcription by binding to the operator.
What is a repressor?
This process uses electricity to seperate DNA fragments by size.
What is gel electrophoresis?