Workflow notes and controls
Safety gate · before any work
- No wet chemicals today; this is a notes and diagram session.
- If using physical model components, handle small pieces carefully to avoid choking hazard for younger students in adjacent rooms.
- Keep workspace organized; loose paper fragments from cut-out diagrams should be collected before leaving.
Do now
Outline the recombinant DNA workflow and explain the rationale for each control.
- Hand in
- Recombinant DNA workflow outline with four ordered steps, named enzyme or reagent for each, restriction enzyme specificity explanation, and positive/negative control identification with safety rationale.
- Where
- Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.
You get two school days for every day you were absent, so this deadline moves with you.
You have a human gene, an empty bacterial , and a plate of E. coli. In what order do you cut, ligate, transform, and select, and how would a plate prove which cells actually took up your gene?
Outline the and explain the rationale for each control.
- • You ordered the correctly.
- • You justified a positive and a .
- Put these four steps in order: select, cut, transform, ligate. Notes closed.
- A is a that cuts DNA. What do you think decides WHERE on the DNA it cuts?
- 1List the steps: cut, ligate, transform, select.
- 2For each step, name the or reagent used.
- 3Explain why restriction enzymes cut at specific sequences.
- 4Identify a positive and a for the experiment.
- 5Write the reason each control is included.
What did this day actually feel like?
Workflow notes and controls
The molecular workflow and where controls sit in it. Positive, negative, and what each one rules out.
Turned in: pre-lab → recorded in Class Records
Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.
The same day, drawn.
The molecular workflow and where controls sit in it. Positive, negative, and what each one rules out.
Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.
🛠 Get unstuck · pick your level
Lab day: Tier 1 is the whole class at the bench. No extension today.
🔑 Today's words · 5
Tap a word in the lesson for a plain meaning and one example. Recycled into next week's Do-Now.
Do the work · 80-minute blockfirst 5 min = hook▸
💡 Big idea: Each step uses a sequence-specific or reagent so that the insert and vector join correctly, and controls are built in so that you can verify the outcome instead of assuming it.
- 0-5 minWarm-up: what does a actually do to DNA?
- 5-20 minList steps and name the or reagent for each
- 20-40 minExplain specificity; sketch a sticky-end diagram
- 40-55 minIdentify positive and negative controls; write rationale for each
- 55-70 minPartner check: can your partner identify all four steps and both controls?
- 70-80 minExit ticket: name the for each step and both controls
- • Today we map the four-step molecular you'll run in a future lab.
- • Cut, ligate, transform, select: each step has a specific molecule doing a specific job.
- • We'll also nail down why controls are not optional: they're how you know your result is real.
- • By the end you'll have a complete reference and a control rationale you can defend.
- • Restriction endonucleases recognize and cut DNA at palindromic sequences, generating compatible sticky ends.
- • DNA seals the nicks between the insert and vector after .
- • selection plates distinguish transformed cells from non-transformed cells.
Recombinant DNA workflow, restriction enzymes, ligation, transformation safety. · notes and controls
Day 2 of this lesson. Open this exact section in myPLTW (find it in Clever, Microsoft sign-in), then do the work below.
Do this: Open Problem 6 in your myPLTW course shell and navigate to the current activity, then outline the and explain the rationale for each control.
Attach your notes and control rationale to the Problem 6 evidence portfolio.
The ethics debate is done; notes are an early Problem 6 milestone, so check your activity guide and submit today.
Completed notes with names and control rationale submitted.
The official PLTW activity stays inside myPLTW. If myPLTW will not open, use F1 and E1-E3 on this page to complete today's local evidence decision, then make up the official activity when access returns. Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.
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 through the submission route shown below.
Use the code Mr. Mendoza gave you, not your name. Saved on this device.
Recombinant DNA workflow, restriction enzymes, ligation, transformation safety. · Workflow notes and controls
Open Problem 6 in your myPLTW course shell and navigate to the current activity, then outline the and explain the rationale for each control.
The ethics debate is done; notes are an early Problem 6 milestone, so check your activity guide and submit today.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Outline the and explain the rationale for each control.
- List the steps: cut, ligate, transform, select.
- For each step, name the or reagent used.
- Explain why restriction enzymes cut at specific sequences.
- Identify a positive and a for the experiment.
- Write the reason each control is included.
Pre-lab: outline with four ordered steps, named or reagent for each, specificity explanation, and positive/ identification with rationale.
Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not. Use the checklist just below and upload by 11:29 PM for full credit. Absent with an excused absence? You get two school days for every day you were absent, so this deadline moves with you.
| Task | Who |
|---|---|
| List the steps: cut, ligate, transform, select. | _______ |
| For each step, name the or reagent used. | _______ |
| Explain why restriction enzymes cut at specific sequences. | _______ |
| Identify a positive and a for the experiment. | _______ |
| Write the reason each control is included. | _______ |
Working solo? Put your own name in "Who" for every row.
- You ordered the correctly.
- You justified a positive and a .
- 1Do thisOutline the recombinant DNA workflow and explain the rationale for each control.
- 2Use this resource
- 3Submit thisPre-lab: Recombinant DNA workflow outline with four ordered steps, named enzyme or reagent for each, restriction enzyme specificity explanation, and positive/negative control identification with safety rationale.
- 4Submit it here
- 1Open the drop folder.
- 2Sign in with your district Microsoft account, not a personal one.
- 3Upload the file, named Lastname_Firstname__Assignment Title.
- 4Your own upload panel says Uploaded with a green check: that is your receipt.
Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not. Biotechnology for Health (Biomedical Innovations) › Recombinant DNA workflow, restriction enzymes, ligation, transformation safety. › Pre-labOpen the drop folder
Learn it · deck, reading, and vocabulary▸
The deck carries the prior idea forward, lets you inspect an analogy, maps the rule to biology, and ends with the same evidence decision and exit ticket used on this page.
Generated from this lesson's canonical data with a red-team citation check.
Genetic engineering can produce medicines we could not otherwise afford or make safely, so its use must be judged by weighing that benefit against the probability and severity of a biosafety failure.
Each step uses a sequence-specific or reagent so that the insert and vector join correctly, and controls are built in so that you can verify the outcome instead of assuming it.
A library keeps a master plan protected while working copies guide production at different stations.
- Why protect the master copy?
- What information moves?
- Where can an error change the final product?
Stored information can be copied, read, and converted into a functional product.
Genes are regulated biological sequences, not conscious instructions, and one gene rarely determines a whole trait alone.
- • Master plan maps to DNA.
- • Working copy maps to RNA.
- • Production output maps to or a regulated cell function.
Driving question: You have a human gene, an empty bacterial , and a plate of E. coli. In what order do you cut, ligate, transform, and select, and how would a plate prove which cells actually took up your gene?
What you already know: Genetic engineering can produce medicines we could not otherwise afford or make safely, so its use must be judged by weighing that benefit against the probability and severity of a biosafety failure.
New idea: Each step uses a sequence-specific or reagent so that the insert and vector join correctly, and controls are built in so that you can verify the outcome instead of assuming it.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Workflow notes and controls. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled system, test, or design relationship and identify which evidence should trigger revision.
- Observe or measure the relevant feature in notes and controls.
- Organize the observation with a stable evidence ID.
- Apply this rule: Stored information can be copied, read, and converted into a functional product.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: You have a human gene, an empty bacterial , and a plate of E. coli. In what order do you cut, ligate, transform, and select, and how would a plate prove which cells actually took up your gene?
What the evidence supports: E1-E3 and F1 support the daily take-home when the response meets the stated success criteria.
What it cannot prove: The package does not support claims beyond this lesson's or any real patient diagnosis.
- • : DNA made by joining genetic material from two different sources, often to insert a chosen gene into a cell so it makes a useful .
- • : A that recognizes a specific and cuts the strand there, a key tool for cutting and studying genes.
- • : An that joins two pieces of DNA together by sealing the gap in their backbone, vital in genetic engineering.
- • : A small circular piece of DNA found in bacteria that copies itself separately from the main and is often used to carry genes in the lab.
- • : A bacterial cell treated so its membrane can take up foreign DNA from its surroundings, a key step in genetic engineering.
Use it now: Choose one decision option. Cite E1 and E3, then explain how the rule connects the evidence to your choice.
Go further, optional: The source links below are optional enrichment. Every fact required for today's local evidence decision appears in this lesson package.
Restriction endonucleases recognize and cut DNA at palindromic sequences, generating compatible sticky ends.
Limit: E1 supplies context or an observation; it does not by itself establish the explanation.
Each step uses a sequence-specific or reagent so that the insert and vector join correctly, and controls are built in so that you can verify the outcome instead of assuming it.
Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.
You ordered the correctly.
Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.
PLTW-BFH-2027-05-03 · Simulated classroom evidence scenario
Your role: biomedical design team member
Decision: Your team must decide what the evidence from notes and controls supports before submitting the pre-lab readiness record named on the lesson page.
- • Select the option best supported by E1-E3.
- • Select a reasonable alternative and name the evidence it would require.
- • Delay the claim because the evidence does not distinguish the options.
Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the pre-lab readiness record.
Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about notes and controls. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
Mean = sum of values / number of values. Median = middle ordered value. Range = maximum - minimum.
For 2, 4, 4, and 10: mean = 20 / 4 = 5, median = 4, and range = 10 - 2 = 8.
Mean, median, and range keep the measurement unit. Order the values before finding the median.
Calculate the requested summary for today's supplied values, then write what it reveals and what it hides.
- • The solution must address the stated need in notes and controls.
- • The decision must be supported by E1-E3.
- • The final product must make the success criteria visible.
- • Complete the work inside the 80-minute block.
- • Use only supplied or teacher-approved materials and evidence.
- • Do not trade , accessibility, or privacy for speed.
- • and evidence quality: must pass before scoring other criteria.
- • User need and effectiveness: highest scored criterion.
- • Time, cost, and ease of use: compare only after and effectiveness pass.
Test evidence: For each option, record the E1-E3 result that supports or fails each criterion. Do not assign a score without a named observation.
- Version or option tested
- Criterion met or missed
- Evidence ID and result
- Revision made
- Reason for the revision
- Need and user
- Criteria and constraints
- Chosen option and evidence
- Test result
- Revision and reason
Students often think Students often think a chops DNA anywhere, like scissors cutting paper wherever you press.. The trap: Restriction enzymes are sequence-specific, not random. Each recognizes one short palindromic sequence and cuts only there, which is exactly why they generate matching sticky ends on the insert and the vector so the two pieces can anneal. If the cut were random, the ends would not match and DNA would have nothing clean to seal.
Workflow, in order:
1. Cut: A restriction enzyme (for example, EcoRI) cuts both the human gene source and the plasmid vector at the same recognition site.
2. Ligate: DNA ligase seals the insert into the cut plasmid, joining the sugar-phosphate backbone.
3. Transform: Competent bacterial cells take up the recombinant plasmid during heat shock.
4. Select: Cells are plated on antibiotic agar so only those carrying the resistance plasmid survive.
Why restriction enzymes cut at specific sequences: They recognize a specific short palindromic sequence and cut only there, producing matching sticky ends so the insert and vector fit together predictably.
Controls:
- Positive control: cells given a plasmid known to carry the resistance gene; they should grow on antibiotic agar, confirming the transformation and plates worked.
- Negative control: cells given no plasmid, plated on antibiotic agar; they should NOT grow. If they do, the antibiotic failed or the plate is contaminated.
Safety reason for controls: The negative control catches contamination and confirms the antibiotic is actually killing non-transformed cells, so we do not mistakenly release or misidentify untreated bacteria.
| Step | Enzyme or reagent | Purpose |
|---|---|---|
| Cut | Restriction enzyme (EcoRI) | Cut gene and plasmid at the same site |
| Ligate | DNA ligase | Seal insert into the plasmid |
| Transform | Competent cells, heat shock | Move plasmid into bacteria |
| Select | Antibiotic agar | Keep only transformed cells |
This model shows the level of evidence and organization needed to complete: Completes the pre-lab workflow outline: four ordered recombinant DNA steps with the enzyme or reagent for each, an explanation of restriction enzyme specificity, and a positive and negative control with safety rationale.
- Identify the purpose, hazards, and required controls.
- Write the procedure in a usable order.
- Confirm materials, measurements, and waste handling before starting.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your workflow notes on the class site today.
- 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. Find it in Clever with your Microsoft sign-in, right next to Schoology.
Tap the speaker to hear a term. Add two of these to your notebook glossary with a definition and an example in your own words.
Pick just 2 or 3 words from today and make them yours: write what each one means in your own words, name the context clue or evidence that helped, then give one example from what you actually did in Workflow notes and controls. Try your own words first; the glossary is there if you get stuck. This is voluntary and counts as extra credit, so keep it short.
Saved on this device. Show Mr. Mendoza or add these to your notebook glossary to claim the extra credit.
Classroom documents for this lesson are posted in Schoology. Open Clever, then Schoology, and find each one by the name shown on its card.
Open this when the class reaches this activity and use it to complete the required lesson artifact.
Placement rationale
Matched Molecular biology and cloning by path:Biomedical-Innovations/Problem-6_Molecular-Biology/00_Problem-Overview; keywords:molecular biology, . Score 146. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Open this when the class reaches this activity and use it to complete the required lesson artifact.
Placement rationale
Matched Molecular biology and cloning by path:Biomedical-Innovations/Problem-6_Molecular-Biology/6.1_Molecular-Biology; keywords:, cloning. 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 Molecular biology and cloning by path:Biomedical-Innovations/Problem-6_Molecular-Biology/6.1_Molecular-Biology; keywords:, cloning. Score 142. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
How to get there: open Clever and sign in with your Microsoft (district) account. Both myPLTW and Schoology are in Clever. Do the activity in myPLTW. Turn the work in on this site or hand it to Mr. Mendoza, because that is the step that counts as submitted. Schoology only shows your report-card grade later.
Check yourself · commit, then reveal▸
Claim ceiling for this check: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about notes and controls. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
After transformation you spread cells on a plate with an antibiotic. Only the plasmid carries the antibiotic-resistance gene. What does it mean if a colony grows, and why is this a control rather than just a growth step?
Write an answer and pick a confidence to unlock the key.
Fast retrieval with instant answers, not the commit-then-reveal check above. Try each from memory first: write what you remember about the earlier units, then check yourself here.
Go further and get help▸
I can name the procedure's purpose and the evidence I will record. I can identify each named hazard and the control that reduces it: No wet chemicals today; this is a notes and diagram session. My data table is ready before materials are handled.
Finish the checklist before you handle any material.
- • No wet chemicals today; this is a notes and diagram session.
- • If using physical model components, handle small pieces carefully to avoid choking hazard for younger students in adjacent rooms.
- • Keep workspace organized; loose paper fragments from cut-out diagrams should be collected before leaving.
- 1Before materials are handled, identify the purpose, variables or comparison, controls, measurement units, and stop-work condition.
- 2List the workflow steps: cut, ligate, transform, select.
- 3For each step, name the enzyme or reagent used.
- 4Explain why restriction enzymes cut at specific sequences.
- 5Identify a positive and a negative control for the experiment.
- 6Write the safety reason each control is included.
- 7Record each result in the prepared table before interpreting it. Mark missing, repeated, or invalid results truthfully.
- 8Complete the named cleanup and waste route, remove PPE safely, wash hands when required, and confirm the station is ready for the next group.
| Trial or sample ID | Independent condition | Measured result with units | Observation before interpretation | Quality-control note |
|---|---|---|---|---|
Before the procedure, predict the result and cite the rule behind the prediction.
After the procedure, compare the result with the prediction and name one limitation or source of uncertainty.
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.
Complete a virtual cloning : select a , cut and ligate the on screen, and record the predicted recombinant product.
Learn.Genetics virtual labsThen submit your Pre-lab. Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Learn.Genetics (University of Utah): cloning and recombinant DNAYou've passed Unit 2, so the optional extra-credit track is open. Complete reserved-unit work from home, including virtual labs, for extra credit. Each item shows its correct submission route.
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, on the class site or handed to Mr. Mendoza in class, and confirmed. Not in Schoology: that is where the report-card grade appears later.
- Error analysis and method · counts doubleName a specific limit of the method and how it moved your result, and compare what you predicted to what happened. "Human error" does not count; say what about the procedure or instrument caused it.