Bio Study Guide for Protein Synthesis/Gene Expression Test Review Question with Answers

Bio Study Guide for Protein Synthesis/Gene Expression Test Review Question with Answers correct answersProkaryote has no nucleus. Eukaryote does. Why is it important that the nucleus of a cell contains nuclear pores? - correct answersNuclear Pores allow for mRNA and ribosomes to leave the nucleus after production. How is it possible that even though all the cells of a multicellular organism contain the same DNA, there are many different types of cells that differ in structure and function? - correct answersDifferent segments of DNA can be activated or deactivated, leading to specialization and differentiation of cells, depending on what segment of DNA is activated, the cell will develop and perform differently. How are chromosomes related to chromatin? - correct answersChromatin are tightly packed chromosomes wrapped around histone proteins. How does the 'packing' of DNA impact the process of gene expression in cells? - correct answersDNA packed can not be reached by RNA polymerase and can not be transcribed. How does the presence of transcription factors influence the process of gene expression? - correct answersTranscription factors determine which segments of DNA are transcribed and which aren't. How is the process of transcription related to the process of translation in the cell? - correct answersTranscription makes mRNA which allows for translation. Is the process of gene expression the same in prokaryotes as it is in eukaryotes? Explain your answer. - correct answersNo, because Prokaryotes do not have a nucleus. Transcription takes place in the cytoplasm instead. What is the difference between prokaryotic and eukaryotic DNA? - correct answersProkaryotic DNA is circular. Eukaryotic is linear. What role do histones play in the packing of DNA? - correct answersHistones are proteins that organize and package strands of DNA in the nucleus (think of story of Suro packing climbing rope)