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Barriers to Pathogens loading

Your body uses chemical and physical barriers as a first defense against infection.

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Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
  • Read
    Barriers to Pathogens

    Barriers to Pathogens

    by CK-12 //at grade
    Describes barriers that keep most pathogens out of the human body.
    MEMORY METER
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  • Read
    Barriers to Pathogens - Advanced

    Barriers to Pathogens - Advanced

    by CK-12 //
    Details the immune system's initial responses to foreign pathogens.
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    This indicates how strong in your memory this concept is
  • Lesson Plan
    Germs and the Body

    Germs and the Body

    by CK-12 //at grade
    Lesson plan includes an introduction, exploration (activities take you to an interactive website, and readings), creating a comic strip, All necessary materials are provided as links in blue.
    MEMORY METER
    This indicates how strong in your memory this concept is
  • Lesson Plan
    Let's Get Defensive

    Let's Get Defensive

    by CK-12 //at grade
    Web address opens to a .pdf document. This lesson plan has seven various activities. "The unit’s introductory lab “What’s Living in My Mouth” will raise student awareness of the positive and negative benefits of the numerous bacteria that call our surroundings home and inhabit our own body." - Baier & Schug
    MEMORY METER
    This indicates how strong in your memory this concept is
  • Practice
    Barriers to Pathogens Practice
    Estimated4 minsto complete

    Barriers to Pathogens Practice

    by CK-12 //at grade
     
     
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    This indicates how strong in your memory this concept is
  • Critical Thinking
    Barriers to Pathogens Discussion Questions

    Barriers to Pathogens Discussion Questions

    by CK-12 //at grade
    A list of student-submitted discussion questions for Barriers to Pathogens.
    MEMORY METER
    This indicates how strong in your memory this concept is
  • Real World Application
    Biofilms – Already In A Theater Near You

    Biofilms – Already In A Theater Near You

    by CK-12 //at grade
    Covers microbial ecology and how bacteria develop resistance to environmental challenges.
    MEMORY METER
    This indicates how strong in your memory this concept is
  • Real World Application
    Time For A Transpoosion

    Time For A Transpoosion

    by CK-12 //at grade
    Discover how animals, including humans, live in symbiosis with bacteria, and how important they are for an animals health.
    MEMORY METER
    This indicates how strong in your memory this concept is
  • Real World Application
    It Started In Lyme

    It Started In Lyme

    by CK-12 //at grade
    Are humans their own worst enemy? Some people think so.
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    This indicates how strong in your memory this concept is
  • Study Guide
    Immune System Part I Study Guide

    Immune System Part I Study Guide

    by CK-12 //at grade
    This study guide looks at the immune system. It reviews the three lines of defense, lymphatic system, humoral immune response, cell-mediated response, and immunity.
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