This is the amino acid missing from the group containing Isoleucine and Leucine.
What is Valine?
100
During the Meselson-Stahl experiment of determining how DNA replicated, they used N-14 and N-15 as opposed to another element because it worked well with these on the DNA.
What are nitrogenous bases?
100
This is the region of DNA upstream from the start of transcription and help orient the RNA polymerase.
What is a promoter?
100
This is missing from the structure of a tRNA: acceptor stem, psi loop, d loop, variable loop.
What is the anticodon loop?
100
This acts as a scaffold on which all other transcription machinery gathers, and happens after the binding of activators.
What is a mediator complex?
200
This is the physiological pH at which most amino acids are kept in cells.
What is 7.4?
200
This will fix the supercoiling of the DNA in a fruit fly.
What is Topo II?
200
This is the structural motif missing from this list: bHLH, HTH, Zinc Finger.
What is a Leucine Zipper.
200
This is the "S" in the 70S or 80S of a ribosome, and it is a measure of this.
What is Svedberg unit and rate of sedimentation?
200
This is a change in gene expression without a change in DNA sequence.
What is epigenetics?
300
The process by which the carboxyl teminus and amino terminus are conjoined to form a peptide bond (2 words).
What is dehydration synthesis?
300
This will keep the newly single stranded DNA of E. coli from reannealing to itself.
What is SSB (single stranded binding protein)?
300
This is used to melt the DNA-RNA hybrid from the rest of the template to stop transcription.
What is Rho-helicase?
300
This attaches the Poly(A) tail to the front of the stand of RNA, forming a "lariat" shape.
What is PABP Poly(A) Binding Protein?
300
This is the original gene that is transcribed to cause a chain reaction that eventually leads the Xist gene to be methylated to silence the X chromosome.
What is the Tsix gene?
400
As we know, nonpolar substances asociate with other non polar substances in polar environments. Also, hydrophobic aggregation is more energetically-favorable because it does this to the environment.
What is increases entropy?
400
This is the polymerase that can never keep running continually on the DNA because it is going "the wrong way".
What is Pol delta?
400
This was the virus in which they discovered RNA splicing.
What is the adenovirus?
400
This is the enzyme that makes the peptide bond in the growing polypeptide chain.
What is peptidyl transferase?
400
The Mediator Complex was discovered in this organism.
What is Saccharomyces cerevisiae?
500
This is a complex in which the protein has a distinct function, and in which multiple proteins with quaternary structure associate together for efficiency.
What is a supramolecular complex?
500
This is the point at which the leading and lagging strand change.
What is the replication fork?
500
Without a Rho helicase, this is the method (and include the process) in which transcription is terminated.
What is Rho-independent; A-T rich inverted repeat/hairpin loop?
500
It is thought that the origin of a virus was this.
What are degernerate (broken down) cells?
500
As we know, not all genes are on at all times. It is called this when a gene will be turned off depending on cell type.