Phet_Simulation_Gene_Expression__1_.docx

Phet Simulation Gene Expression Goal: Students can describe the process and effects of gene expression Click the link for the Gene Expression Essentials lab simulation Highlight/use bold or color your answers. Go to the “Expression” Tab. Start on Gene #1 1. On which molecule is all of this based? (1 point) Positive transcription factor 2. What do you think the difference in the color of strands represents? Are they that color in real DNA? (1 point) Different strands of DNA, I don’t believe they are really that color. For the next several questions: think about what/where things are at the start, and what/ where things are at the end of the process. Explain both of those parts when explaining what the biological macromolecule/enzyme does. 3. What does the “Positive Transcription Factor” do? (1 point) Transcribe Dna into Rna 4. What does the “RNA Polymerase” do? (1 point) The primary transcript 5. What does the “mRNA destroyer” do? (1 point) Reads RNA to produce proteins 6. What does the “negative transcription” factor do? (1 point) Preventens transcription of some DNA. 7. What does “Ribosome” do? (1 point) Bind RNA and transfer rna to proteins Go to Gene #2 8. What does Gene #2 have to have to make mRNA, that gene #1 didn’t? (1 point) A second positive transcription. Go to Gene #3 This study source was downloaded by from CourseH on :27:38 GMT -06:00 9. Can you have more than one type of molecule working? Why would that be helpful? (2 point) After Exploring all three of the genes Fill in the blanks below. 10. Gene _____ is more complex than Gene _____ because_________________________________ (2 point) 11. What is the difference between the “regulatory region”/origin and the “transcribed region”/code? (1 point) 12. A student says that “ALL DNA codes for proteins.” Do you agree with her? Why or why not? (3 points) ClaimEvidenceReasoning13. In your own words, write a short paragraph below that explains the sequence of how DNA codes for a protein. (3 points) Go to the Next Tab that says, “mRNA.” 1. Try out all of the tabs. What does the term “affinity mean”? (1 point) 2. What are the circumstances that make the most mRNA? (1 point) 3. What are the circumstances that make the least mRNA? (1 point) This study source was downloaded by from CourseH on :27:38 GMT -06:00 4. Why would a cell need to have the option to make or not make protein? (1 point) Go to the next tab that says, “Multiple Cells.” 5. Mark, where the slider should be on the controls for the amount of protein, requested: (use tools) (1 point) LOTS None 6. In your own words, what does “degradation” mean? (1 point) 25 total ______ This study source was downloaded by from CourseH on :27:38 GMT -06:00 Powered by TCPDF ()