What is the substrate of a histone acetyltransferase?

A regulatory region shows all of the following properties except a) can be located in an exon. b) can be located at a distance from the gene. c) acts as a binding site for transcription factors. d) acts as a binding site for a polymerase.

How does DNA encode the instructions to make us? Select all the true statements. Group of answer choices ( select all the true answers) a) DNA encodes the heritable instructions to make proteins b) DNA is directly translated into proteins c) DNA is first transcribed into mRNA, then the mRNA is translated into protein d) RNA is first transcribed into DNA, which is then translated into protein e) Each of our cells contains the same DNA, but different genes are transcribed and translated in different cell types.

The nucleosome core particle: a) contains about 145 based of DNA b) contains 6 histone proteins  c) contains histone H1 d) none of the above

Which of the following is true of transposons? A) SINES are DNA-only transposons B) LINES are non-autonomous transposons Oa break induced repair is the mechanism by which this form of recombination C) occurs O D) recombinases form phosphotyrosine intermediates during transposition E) spo11 initiates the double-strand break to initiate transpostion

4. Which statement about telomeres is incorrect? A) Telomeres are repetitive nucleotide sequences at- the end of a chromatid B) Telomeres serve as protective caps that prevent chromosome from deterioration during cell division C) Telomeres are gradually consumed during repeated the cell divisions D) In cancer cells, telomerase activity is usually re- duced compared with normal cells

Which is the expected outcome following the deacetylation of histones? a) Coiling of chromatin, preventing it from being accessed by transcriptional machinery b) Coiling of chromatin, allowing it to be accessed by transcriptional machinery c) Uncoiling of chromatin, preventing it from being accessed by transcriptional machinery d) Uncoiling of chromatin, allowing it to be accessed by transcriptional machinery

In the pathway below, normal signalling driving cell division requires a mitogen (ligand), an RTK, Ras and proteins X and Y. Which of the following statements is true about the genes that encode the mitogen and Ras in healthy cells? mitogen active Ras protein CYTOSOL GTP active signaling protein Y active receptor active signaling protein X tyrosine kinase CELL DIVISON

Which of the following among A-Cis not needed for bacterial transcription Y A) O core RNA polymerase function B) Oa promoter C) O signma factor D) OA-C are all required for transcription

Which will be bound to the Lac Operon in an environment with lactose and glucose? A) both repressor and CAP B) repressor only C) CAP only D) neither repressor nor CAP