Control of Expression Random Retrieval

PCR allows DNA to replicate by semi-conservative replication. But what word best describes the rate at which it amplifies?

What do we call it if the restriction enzyme cuts both strands of DNA in a staggered position to create an overhang?

Which bond to restriction endonucleases ( restriction enzymes) break?

What do we call enzymes that cut DNA at specific base sequences?

What causes epigenetic markers to be added or removed from DNA?

Acetylation is the addition of a C2H3O group which contains a double bonded oxygen. Where does acetylation occur?

A methyl group has the structure CH3. Methylation is the addition of a methyl group onto what?

What substances can be used to take mature, differentiated adult cells, and de-differentiate them back into pluripotent stem cells ?(usually only found in embryos).

What word describes the inner cell mass now?

The morula hollows out into a hollow sphere, with a small group of cells at the bottom called teh inner cell mass which go on to develop into an embryo. What do the outer cells go on to make?

At the start of transcription, where does RNA polymerase bind?

The mRNA travels to the ribosome, where it feeds between the two subunits, exposing the template bases. tRNA molecules each carry a specific amino acid at the top, with a complementary sequence of three bases called an anti-codon at the bottom. The tRNA anticodons then complementary base pair with the mRNA codon.

In the ribosome there are 3 binding sites for tRNA, two where a peptide bond is formed between the carried amino acids. These amino acids then form a polypeptide chain which leaves the ribosome. The third site is a departure site, where the tRNA which has released its amino acid departs to pick up a new amino acid. Once the entire mRNA sequence has been ____11____, it can either pass into another ribosome to make another polypeptide or be degraded.

Which molecule is created during transcription?

Which of the following would NOT increase your exposure to oestrogen?

Cancer is often caused by a mutation causing a cell to divide uncontrollably and spread into other tissues. Name the gene that normally slows or reduces cell division:

Which of the following would have the most dramatic effect on the primary structure of the polypeptide produced?

What is the position of gene on a chromosome called?

If a section of DNA contains 21% base C, what percentage will base A have?

Which direction can DNA polymerase only extend the new strand of DNA?

Which of the following is NOT a difference between RNA and DNA?