Protein expression
Explain how a host cell expresses the inserted gene to produce the target protein.
Annotated notes tracing transcription and translation of the inserted gene, two yield-affecting conditions, and one piece of expression evidence from sample data.
- 1Do thisExplain how a host cell expresses the inserted gene to produce the target protein.
- 2Use this resource
- 3Submit thisNotebook check: Annotated notes tracing transcription and translation of the inserted gene, two yield-affecting conditions, and one piece of expression evidence from sample data.
- 4Submit it here
- 1CMSD website. Go to clevelandmetroschools.org and click the Clever button.
- 2Clever. Clever opens. Sign in if it asks.
- 3Microsoft (district) login. Use your district Microsoft account (the one for school).
- 4Schoology. Open Schoology, then your class, then Assignments, and find the file named below.
The file to submit is named: Genetics of Disease (Medical Interventions) › Plasmids, restriction enzymes, ligase, transformation, protein expression. › Notebook checkOpen Schoology
- CER:
- Claim, Evidence, Reasoning — make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure — the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities — you open it through Schoology.
Minute-by-minute · 80-minute block
💡 Big idea: Gene expression turns an inserted DNA sequence into a functional protein, and every step is a potential control point.
- 0-10Read expression notes; define expression in own words
- 10-28Trace transcription of inserted gene; annotate promoter role
- 28-45Trace translation; annotate ribosome reading human mRNA in bacteria
- 45-58List two growth conditions that affect yield; explain mechanism
- 58-70Identify expression evidence in sample data; write one sign
- 70-80Add notes to tracker; preview Friday quiz topics
- • Your bacteria now carry the recombinant plasmid, but carrying DNA is not the same as making protein.
- • Expression is the process that turns that DNA into a usable product.
- • Today you trace the path from inserted gene to finished protein and find the levers that control yield.
- • Gene expression mechanics are central to the Molecular and Genetic Technology domain on the WebXam.
- 1Read the expression notes in the PLTW course shell and define expression.
- 2Trace transcription and translation of the inserted gene in the host cell.
- 3Explain why growth conditions can raise or lower how much protein is made.
- 4Identify one sign that expression worked in the sample data.
- 5Add your expression notes to your Unit 4 PLTW tracker evidence.
- • You'll be able to describe how a host cell expresses an inserted gene.
- • You'll be able to name a condition that changes protein yield.
- • Expression requires the inserted gene to have a promoter the host cell recognizes.
- • Temperature, nutrient availability, and inducer concentration each affect mRNA and protein yield.
- • GFP fluorescence or enzyme activity is used as a visible proxy for successful expression.
Your PLTW work today
Plasmids, restriction enzymes, ligase, transformation, protein expression. · Protein expression
Day 4 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.
Do this: Open Activity 4.1.2 Protein Factories in myPLTW and trace transcription and translation of the inserted gene to explain protein expression in the host cell.
Mark the protein-expression entry complete and attach your annotated expression notes.
Workflow data table should be done (Wednesday); annotated expression notes due today.
Annotated transcription/translation trace with two yield conditions and one expression sign submitted to the tracker.
All PLTW activities are completed inside the PLTW course environment — this page only gives direction. Submit producibles on Schoology.
Today's PLTW tracker
Check things off as you work, then submit. This tells Mr. Mendoza how you're doing so he can help the class. It does not replace turning in your producible on Schoology.
Use the code Mr. Mendoza gave you, not your name. Saved on this device.
Plasmids, restriction enzymes, ligase, transformation, protein expression. · Protein expression
Open Activity 4.1.2 Protein Factories in myPLTW and trace transcription and translation of the inserted gene to explain protein expression in the host cell.
Workflow data table should be done (Wednesday); annotated expression notes due today.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Explain how a host cell expresses the inserted gene to produce the target protein.
- Read the expression notes in the PLTW course shell and define expression.
- Trace transcription and translation of the inserted gene in the host cell.
- Explain why growth conditions can raise or lower how much protein is made.
- Identify one sign that expression worked in the sample data.
- Add your expression notes to your Unit 4 PLTW tracker evidence.
Notebook check: Annotated notes tracing transcription and translation of the inserted gene, two yield-affecting conditions, and one piece of expression evidence from sample data.
Submit on SchoologyUpload by 11:29 PM for full credit.
| Task | Who |
|---|---|
| Read the expression notes in the PLTW course shell and define expression. | _______ |
| Trace transcription and translation of the inserted gene in the host cell. | _______ |
| Explain why growth conditions can raise or lower how much protein is made. | _______ |
| Identify one sign that expression worked in the sample data. | _______ |
| Add your expression notes to your Unit 4 PLTW tracker evidence. | _______ |
Working solo? Put your own name in "Who" for every row.
- You'll be able to describe how a host cell expresses an inserted gene.
- You'll be able to name a condition that changes protein yield.
Teacher-posted resources
Classroom documents for this lesson. Ones marked “Open the file” open right here; the rest are posted in Schoology. Use the label on each card to choose the right move.
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Recombinant DNA and cloning workflow by path:Medical-Interventions/Unit-4_When-Organs-Fail/4.1_Manufacturing-Human-Proteins; keywords:transformation, pglo. Score 142. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Recombinant DNA and cloning workflow by path:Medical-Interventions/Unit-4_When-Organs-Fail/4.1_Manufacturing-Human-Proteins; keywords:transformation, pglo. Score 138. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Recombinant DNA and cloning workflow by path:Medical-Interventions/Unit-4_When-Organs-Fail/4.1_Manufacturing-Human-Proteins; keywords:transformation, pglo. Score 138. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
How to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
Lab & supplies
WebXam practice
Cumulative WebXam review
A quick mixed-review pulling questions from earlier units plus today, so the WebXam material stays fresh.
Where this leads — careers
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
What to do if you were absent
Today is individual PLTW work, so do exactly what we did in class, from home: complete the same PLTW target above, then submit your Notebook check.
Open Schoology (CMSD) and keep goingHow to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Genetic Science Learning Center: CloningOptional extra credit (async)
You've passed Unit 2, so the optional extra-credit track is open. Complete reserved-unit work from home (virtual labs included) for extra credit, all submitted on Schoology.
Open the extra-credit track- CompleteEvery required part of the artifact is present, nothing left blank.
- AccurateThe science and the data are correct and match the evidence.
- Scientific reasoningYou explain your claim with evidence and reasoning (CER), not just an answer.
- Professional communicationClear, organized, labeled, and written the way a clinician or scientist would.
- SubmittedTurned in the right way (Schoology for routine work) and confirmed.
Drop your Tue, Nov 24, 2026 · Protein expression here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).
Upload a project