GRN (P1)
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- Q1What demonstrates the genetic identity among different cells in an organism?Cells express all their genes simultaneouslyEach cell contains a unique set of genesDifferent cells contain different numbers of chromosomesAll cells are genetically identical60s
- Q2What influences cellular specialization?Genetic makeup onlyMicroenvironment onlyBoth genetic makeup and microenvironmentNeither genetic makeup nor microenvironment60s
- Q3How many genes do humans have?Between 2,000 and 2,500Between 20,000 and 25,000Over 100,000Less than 1,00060s
- Q4What results from differential gene expression in cells?Identical functions in all cellsThe same number of chromosomes in all cellsUniform cell shapes across the bodyDifferent functions and phenotypes in cells60s
- Q5What is the Central Dogma of molecular biology?Protein to DNADNA to RNA to ProteinProtein to RNARNA to DNA60s
- Q6Which groups are involved in epigenetic modification?Acetyl groupAll of the aboveMethyl groupPhosphate group60s
- Q7What is necessary for transcriptional regulation?mRNA cap modificationTranscription factorsProtein translationDNA replication60s
- Q8What occurs in post-transcriptional modification?All of the aboveAddition of poly(A) tailAlternative splicing5’ capping60s
- Q9Translational control of gene expression depends on:The number of ribosomesThe number of chromosomesThe stability of processed mRNAThe length of the DNA60s
- Q10Post-translational control can involve:DNA replicationProtein folding and modificationRNA interferenceGene duplication60s
- Q11The movement of histone proteins affects DNA by:Altering the nucleotide sequenceChanging the charge of DNACoiling or uncoiling DNAIncreasing the number of genes60s
- Q12
Gene expression is regulated at which of the following stages?
I. Epigenetic modification
II. Transcriptional control
III. Post-transcriptional modification
IV. Post-translational control
III & IV
I & II
All ofthe above
II & III
60s - Q13
Which of the following are stages of gene regulation? (Choose all that apply)
I. Epigenetic modification
II. Transcriptional control
III. Post-translational control
IV. Mitosis
I & II
II, III, & IV
I, II & III
All of the above
60s - Q14
Which modifications occur after mRNA is transcribed but before translation begins?
I. mRNA cap modification
II. Alternative polyadenylation
III. Alternative splicing
IV. DNA methylation
II & III
I, II & III
I & IV
All of the above
60s - Q15
Based on today’s lecture, at how manystages can genes expression be regulated?
4
3
5
2
60s