Innate and adaptive immunity
Open your materials, follow the steps, then turn in your work.
Distinguish innate from adaptive immunity using teacher notes and the PLTW online task.
1. Open your materials
Use the materials named in the first step below. Open lesson resources.
2. Start the work
Take notes on innate barriers and adaptive responses.
Show all 5 required steps
- Take notes on innate barriers and adaptive responses.
- Define antigen, antibody, and lymphocyte.
- Complete the PLTW online immune-response activity.
- Map the lymphatic system on a body diagram.
- Write one question about immune memory.
Lost your place? Interrupted? Check your notes for these five steps: notes on innate barriers and adaptive responses, definitions of antigen/antibody/lymphocyte, the PLTW online immune-response activity, the labeled lymphatic body diagram, and your one written question about immune memory. Resume at the first blank.
Check your work before submitting
- Innate and adaptive responses are correctly distinguished.
- PLTW online task is submitted complete.
3. Turn in your work
DueCheck Schoology- Hand in
- Lymphatic system body diagram with key nodes and vessels labeled, plus written definitions of antigen, antibody, and lymphocyte in your own words.
How to submit and name your file
Use the submission route shown on today's today's page.
In Schoology, open your course and the assignment for this lesson. Attach your file, select Submit, and check that it appears in the submission.
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Check the section number beside Human Anatomy and Physiology in Schoology.
Assignment: Wk15 Vocabulary: Innate and adaptive immunity
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How this lesson connects
Keep using what you learned last class: A comparison needs the values, the rule connecting them and a clear limit. Today: Adaptive immunity is slow because it must first identify one specific antigen, but that specificity is exactly what lets it build memory, so the second exposure is fast.
Unit 3 guide: what to keep and use nextOptional: listen or watch a unit review▸
Need help? Warm-up, timing, and directions▸
💡 Big idea: is slow because it must first identify one specific , but that specificity is exactly what lets it build memory, so the second exposure is fast.
- 0-10Warm-up: what happens in the first 4 hours after a enters the body?
- 10-28Guided notes: barriers, phagocytosis, inflammation vs. adaptive lymphocyte response
- 28-45PLTW online immune-response activity
- 45-58Map lymphatic system on body diagram; label key nodes and vessels
- 58-70Write one question about immune memory; pair-answer
- 70-80Submit diagram and PLTW completion confirmation
- • Your body fights infections on two timescales: an immediate general alarm and a slower targeted strike.
- • Today you will map both layers and understand how they connect to protection.
- • , , and lymphocyte are core vocabulary for the Microbiology WebXam domain.
- • Leave with a lymphatic system diagram and a clear distinction between and adaptive.
- • immunity includes physical barriers (skin, mucus) and non-specific cellular responses (phagocytosis, inflammation).
- • involves lymphocytes (B and T cells) that recognize specific antigens and create memory for faster future responses.
- • Antibodies are Y-shaped proteins produced by B cells that bind specific antigens to neutralize or tag pathogens.
PLTW connection and today's work
Complete the lymphatic-system task in Activity 3.2.1 Powers of Protection (Lesson 3.2 Body Guards) on myPLTW, then open Activity 3.2.2 Immune Defense and work through the screens on phagocytes, B cells, T cells, and antibodies.
Today's stopping point: Monday's task is done; today the immunity task should show complete.
PLTW activity titles identify the course connection. If your account will not open, use the posted materials for today and tell Mr. Mendoza. Do not mark an online activity complete unless you completed it.
Course connection
- Activity 3.2.1 Powers of Protection
- Activity 3.2.2 Immune Defense
Use the turn-in directions at the top of this page. Do not create a second submission unless your teacher asks for one.
Show another explanation or a smaller first step
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Lesson resources: reading, slides, 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.
A comparison needs the values, the rule connecting them and a clear limit.
is slow because it must first identify one specific , but that specificity is exactly what lets it build memory, so the second exposure is fast.
A smoke alarm detects signs of fire but can also react to burnt toast.
- What does the alarm detect?
- What creates a false alarm?
- What evidence is needed before declaring a fire?
A screening signal changes what to investigate next; it does not automatically prove the cause.
Biomedical tests have measured performance and biological sampling limits that a household alarm does not capture.
- • Alarm signal maps to a test result.
- • Burnt toast maps to a .
- • Inspection maps to confirmation or the next test.
Driving question: You cut your finger on a rusty gate. Within minutes it is red, warm, and swollen, but you do not feel truly sick for two more days. Why is one part of your defense instant and the other part slow?
What you already know: A comparison needs the values, the rule connecting them and a clear limit.
New idea: is slow because it must first identify one specific , but that specificity is exactly what lets it build memory, so the second exposure is fast.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Innate and adaptive immunity. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled structure, movement, or system relationship that connects form to function.
- Observe or measure the relevant feature in today's lesson.
- Organize the observation with a stable evidence ID.
- Apply this rule: A screening signal changes what to investigate next; it does not automatically prove the cause.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: You cut your finger on a rusty gate. Within minutes it is red, warm, and swollen, but you do not feel truly sick for two more days. Why is one part of your defense instant and the other part slow?
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.
- • : A clear fluid that drains from body tissues into lymphatic vessels, carrying white blood cells and helping the body fight infection.
- • : A Y-shaped immune with two -binding tips that marks a specific foreign target for destruction or neutralization.
- • : A molecule, often on a germ's surface, that the immune system recognizes as foreign and responds to by making matching antibodies.
- • : A microorganism such as a bacterium, virus, fungus, or parasite that can cause disease in its host.
- • : A preparation that delivers an (or the instructions to make one) so the immune system learns to recognize the real later.
- • : The body's first, fast, general line of defense present from birth, including skin, mucus, and cells that attack any invader without prior exposure.
- • adaptive: Able to adjust to changing conditions, like the body shifting blood flow during exercise or the immune system tailoring a defense to a specific germ.
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.
and adaptive defenses interact, and vaccination can prepare -specific immune memory that changes the probability or severity of later disease without guaranteeing protection for every person.
Limit: A teaching model simplifies interacting cells, signals, timing, types, and population differences.
A screening signal changes what to investigate next; it does not automatically prove the cause.
Limit: Biomedical tests have measured performance and biological sampling limits that a household alarm does not capture.
and adaptive responses are correctly distinguished.
Limit: E3 defines the classroom product or success criterion. It is not independent scientific evidence and cannot justify a clinical or causal claim.
PLTW-HAP-2027-04-29 · Simulated classroom evidence scenario
Your role: anatomy and physiology consultant
Decision: Your team must decide what the evidence from today's lesson supports before submitting the vocabulary application named on today's page.
- • Call vaccination a private medical choice, since a shot protects the person who takes it and nobody else.
- • Ask how close that community sits to 95 percent immune, because that number decides how much one refusal matters.
- • Treat the choice as affecting others, then defend your mandate stance by naming who benefits and who is burdened.
Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the vocabulary application.
Claim ceiling: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
Students often think Students often think the immune system is one single thing that attacks all germs the same way every time.. The trap: That is the trap: there are two distinct layers. immunity (barriers, phagocytes, inflammation) hits every invader the same and keeps no memory. (B and T cells) builds a custom response to one specific and remembers it. Treating them as one system makes immune memory impossible to explain.
My definitions (in my own words):
- Antigen: a molecule, often on the surface of a pathogen, that the immune system recognizes as foreign and responds to.
- Antibody: a Y-shaped protein made by B cells that binds to a specific antigen to neutralize or tag the pathogen.
- Lymphocyte: a white blood cell (B cell or T cell) that drives the adaptive, antigen-specific immune response.
Innate vs adaptive (one-line contrast): innate immunity is fast and non-specific (skin, mucus, phagocytes, inflammation); adaptive immunity is slower, highly specific, and builds memory for faster future responses.
My question about immune memory: How long do memory B cells survive after a single infection?
| Feature | Innate immunity | Adaptive immunity |
|---|---|---|
| Speed | Fast (minutes to hours) | Slow on first exposure (days) |
| Specificity | Non-specific | Highly specific to antigen |
| Examples | Skin, mucus, phagocytes | B cells, T cells, antibodies |
| Memory | No lasting memory | Builds long-term memory |
This model shows the level of evidence and organization needed to complete: Completes the immunity vocabulary target: a labeled lymphatic-system diagram plus student-written definitions of antigen, antibody, and lymphocyte.
- Define the term in plain scientific language.
- Connect it to the current investigation.
- Use it accurately in a new example or contrast.
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 the completed PLTW online immune-response task with your diagram and definitions.
- 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 Innate and adaptive immunity. 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.
Hand-picked readings, videos, and interactives for this lesson, all free and from authoritative open organizations (NIH, CDC, OpenStax, Khan Academy, PhET, HHMI, and more).
A fillable, Cornell-style notebook for Unit 3: Adventure Awaits. Type your notes, cues, and summaries right in the PDF, or print it and write by hand. Each lesson page has a cue column, a notes column, and a summary box, plus dated lab-record pages you can turn in.
HBS Unit 3 notebook: Adventure Awaits Fillable PDFCornell notes + lab recordsOpenVetted readings and references for this unit. Use them to prepare, to catch up if you were absent, or to go deeper on today's target.
Practice: try a question, then check your answer▸
Claim ceiling for this check: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
A pathogen enters your body for the very first time. List, in order, which defense meets it first and which meets it second, and say which one leaves you with memory.
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.
Missed class or ready for more?▸
Run this before you touch the bench. It is built from the real lab procedure, so the decisions you make here are the ones you will make with the equipment in your hands.
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.
Today is individual work you can do from home: complete the same target above, then submit your Vocabulary task.
Go to Schoology to turn this in. Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf. If you cannot get in, see Mr. Mendoza. Do not skip the work.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
MedlinePlus: Immune System and DisordersYou'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.
- SubmittedGo to Schoology to turn this in. Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf. If you cannot get in, see Mr. Mendoza. Do not skip the work.
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