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Bio 1500 Test 6 - Bush & Schul Exam Questions
And Answers |Latest 2025 | Guaranteed Pass
Recognize what it means if a gene is expressed vs not expressed, turned on vs turned off, or up-
regulated vs down-regulated. - Answer✔you can be be a carrier of a gene but it's not shown-
expressed vs not
Whether or not the gene is translated and transcribed into a protein - turned on vs off
up-regulated means something is produced more and down-regulated, something is produced
less
Connect variation in gene expression with differentiation/specialization of cells. - Answer✔cells
differentiate during development, so different genes are expressed during the creation and
function of new cells.
All cells have all the DNA, but certain cells only express certain genes that go with the cell's
purpose/function
Know examples of things or situations that cause genes to be turned on or off. -
Answer✔developmental stage, type of tissue, stage of physiological cycle, and environmental
cues
Describe the roles of transcription factors, activator proteins, repressor proteins, promoters,
and RNA polymerase in gene expression. - Answer✔transcription factors- proteins that control
whether a gene is expressed or not
Activator proteins- bind to DNA to facilitate transcription of a gene
repressor proteins- bind to DNA to inhibit the transcription of a gene
promoter - where the activator/repressor protein binds- the DNA that codes for the start of a
gene
RNA polymerase - This is the enzyme that starts the process of making a protein to express the
gene
Define 'regulatory genes,' explain broadly how they work, and why they are important. -
Answer✔Genes that code for the transcription factors
1|Page
Bio 1500 Test 6 - Bush & Schul Exam Questions
And Answers |Latest 2025 | Guaranteed Pass
Recognize what it means if a gene is expressed vs not expressed, turned on vs turned off, or up-
regulated vs down-regulated. - Answer✔you can be be a carrier of a gene but it's not shown-
expressed vs not
Whether or not the gene is translated and transcribed into a protein - turned on vs off
up-regulated means something is produced more and down-regulated, something is produced
less
Connect variation in gene expression with differentiation/specialization of cells. - Answer✔cells
differentiate during development, so different genes are expressed during the creation and
function of new cells.
All cells have all the DNA, but certain cells only express certain genes that go with the cell's
purpose/function
Know examples of things or situations that cause genes to be turned on or off. -
Answer✔developmental stage, type of tissue, stage of physiological cycle, and environmental
cues
Describe the roles of transcription factors, activator proteins, repressor proteins, promoters,
and RNA polymerase in gene expression. - Answer✔transcription factors- proteins that control
whether a gene is expressed or not
Activator proteins- bind to DNA to facilitate transcription of a gene
repressor proteins- bind to DNA to inhibit the transcription of a gene
promoter - where the activator/repressor protein binds- the DNA that codes for the start of a
gene
RNA polymerase - This is the enzyme that starts the process of making a protein to express the
gene
Define 'regulatory genes,' explain broadly how they work, and why they are important. -
Answer✔Genes that code for the transcription factors
1|Page
