Bio 200 RQ 5-2
If a cell does not need a particular protein at a given time, which of the following
strategies will be the "cheapest" (or most "efficient" in terms of energy and resources)
compared to the others? - answer do not transcribe the gene for this protein into mRNA
Which of the following strategies will be the quickest way to change a protein's function?
- answerModify the protein by attaching a functional group, such as a phosphate.
Which of the following is an example of translational control? - answerA regulatory
protein binds the 5' end of an mRNA, preventing it from binding to a small ribosomal
subunit
In order to regulate when and how often the transcription of a gene occurs, regulatory
proteins should bind to... - answerregions of the DNA near the promoter
Are there any genes that will be expressed all the time ("constitutively") by cells? -
answeryes
Why do cells only express a subset of their genes (not ALL of their genes) at any given
time? (Choose ALL correct answers) - answercells in a multicellular organism can have
different phenotypes by expressing different groups of genes
it wastes a lot of energy to make RNA and proteins you don't need.
it wastes a lot of resources (nucleotides and amino acids) to make RNA and proteins
you don't need
If a cell does not need a particular protein at a given time, which of the following
strategies will be the "cheapest" (or most "efficient" in terms of energy and resources)
compared to the others? - answer do not transcribe the gene for this protein into mRNA
Which of the following strategies will be the quickest way to change a protein's function?
- answerModify the protein by attaching a functional group, such as a phosphate.
Which of the following is an example of translational control? - answerA regulatory
protein binds the 5' end of an mRNA, preventing it from binding to a small ribosomal
subunit
In order to regulate when and how often the transcription of a gene occurs, regulatory
proteins should bind to... - answerregions of the DNA near the promoter
Are there any genes that will be expressed all the time ("constitutively") by cells? -
answeryes
Why do cells only express a subset of their genes (not ALL of their genes) at any given
time? (Choose ALL correct answers) - answercells in a multicellular organism can have
different phenotypes by expressing different groups of genes
it wastes a lot of energy to make RNA and proteins you don't need.
it wastes a lot of resources (nucleotides and amino acids) to make RNA and proteins
you don't need
