Control of Expression Random Retrieval

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Control of Expression Random Retrieval

This quiz contains all the questions in the Control of Expression section. The website will pick 20 questions at random.

1 / 20

We cannot see the proteins made by recombinant plasmids, nor the plasmids themselves. How do we know the bacteria have been transformed properly and contain a recombinant plasmid ( = plasmid and new gene fragment) ?

2 / 20

Using bacteria is an example of what type of DNA Amplification?

3 / 20

Which bond to restriction endonucleases ( restriction enzymes) break?

4 / 20

How would the cDNA base sequence of a gene differ to the normal genomic base sequence of a gene?

5 / 20

Can extra methylation be removed from the DNA?

6 / 20

What effect will having a high methylation of a promoter sequence , have on expression of that gene?

7 / 20

What is 'Epigenetics'?

8 / 20

What are iPS cells?

9 / 20

Cardiomyocytes are an example of what type of stem cell?

10 / 20

Which type of stem cells are not found in adults?

11 / 20

After fertilisation, zygotes ( fertilised eggs) divide by which process?

12 / 20

Which molecule does the SIRNA / protein complex (RISC) bind to?

13 / 20

What do we call a transcription factor that 'turns on ' genes?

14 / 20

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 ____8____.

In the ribosome there are 3 binding sites for tRNA, two where a ____9____ bond is formed between the carried amino acids. These amino acids then form a ____10_____ 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.

15 / 20

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

16 / 20

Methylation of DNA is when a methyl group ( CH3) is added onto CpG bases ( cytosine and guanine next to each other). This can stop DNA polymerase from binding.

What effect will increased methylation (Hypermethylation) have on transcription?

17 / 20

TTA = Leu TTG = Leu TTC = Phe TCA = Ser TAA = Stop What would be the order of amino acids in a polypeptide coded from this sequence?

TTCTTGTTATCATAA

18 / 20

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

19 / 20

Which two molecules does DNA Polymerase join together?

20 / 20

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

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