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Gene expression: Quiz

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Question 1: While some RNAs function in the nucleus, many RNAs are transported through the nuclear pores and into the ________.
Cell (biology)MitochondrionCytosolMetabolism

Question 2: What does the following picture show?

  Genes are expressed by being transcribed into RNA, and this transcript may then be translated into protein.
  Genes are expressed by being transcribed into RNA, and this transcript may then be translated into protein.
  The lambda repressor transcription factor (green) bound to its DNA target (red and blue). From PDB 1LMB.
  Cartoon diagram illustrating the translation of mRNA by a ribosome.

Question 3: This cDNA template is then used for qPCR where the change in ________ of a probe changes as the DNA amplification process progresses.
Fluorescent lampLight-emitting diodeUltravioletFluorescence

Question 4: ________ is a widespread mechanism for epigenetic influence on gene expression and is seen in bacteria and eukaryotes and has roles in heritable transcription silencing and transcription regulaton.
OperonEpigeneticsDNA methylationGene silencing

Question 5: What does the following picture show?

  The patchy colours of a tortoiseshell cat are the result of different levels of expression of pigmentation genes in different areas of the skin.
  Neomycin is an example of a small molecule which reduces expression of all protein genes, thus acts as an antibiotic.
  Neomycin is an example of a small molecule which reduces expression of all protein genes, thus acts as an antibiotic.

Question 6: The production of RNA copies of the DNA is called transcription, and is performed by ________, which adds one RNA nucleotide at a time to a growing RNA strand.
RNA polymerase IIRNA-dependent RNA polymeraseRNA polymeraseTelomerase

Question 7: This is normally a protein although may also be RNA, such as tRNA or a ________.
RNA world hypothesisTransfer RNARibozymeDNA

Question 8: The gel-based nature of this assay makes quantification less accurate but it has the advantage of being able to identify later modifications to the protein, for example proteolysis or ________, from changes in size.
UbiquitinAmino acidPhosphorylationProtein biosynthesis

Question 9: In ________ gene expression is the most fundamental level at which genotype gives rise to the phenotype.
EvolutionDNABiologyGenetics

Question 10: Gene expression is the process by which information from a ________ is used in the synthesis of a functional gene product.
DNAGeneEvolutionGenetics







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