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        • Processing Microscope Data
        • Surface Area/Volume Lab >
          • Types of Errors - more notes.
        • Plasmolysis Lab
        • Cell Cycle Timing Lab
      • Biochemistry >
        • Surface Tension Lab
        • Molecules of Life - Modeling Activity
        • Jmol molecule visualizations
        • Playdough and Toobers!
        • Race for the Double Helix movie
        • Extraction
      • Metabolism >
        • Enzyme Lab
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      • Evolution >
        • Natural Selection Web Activities
        • Paper Worm Simulation - Data Collection and Processing
        • Coacervate Lab
        • Hominid Evolution - Skull Lab
      • Phylogeny >
        • Constructing Cladograms
      • Plants >
        • Comparative look at animal developmental switches
        • Plant Microscope exercise
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        • Preview Topics
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        • Sheep Brain Dissection
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        • Altered Reality
        • Human Behavior Lab
      • Physiology >
        • Digestion Demos
        • Sheep Heart dissection
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        • Virtual ELISA
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Essential  Biology  Learning  Guides (homework, review)

Topic 6,1 Digestion & absorption - PDF of Biozone Workbook pages (updated 2nd edition) pp 227-235 (Activities 160-167)
Topic 6.4 Gas Exchange - Biozone PDF pp 258-266 (Activities 184-190)
Topics 6.2 Transport (Circulation) - Biozone  PDF  pp 236-247  (Activities 168-176)
Topic 6.3  Disease and Immune System - Biozone PDF pp 248-257 (Activities 177-183)
Topic 6.5 - Neurons & Synapses - Biozone PDF pp 267-273 (Activities 191-196)
Topic 6.6 Reproduction - Biozone PDF pp 274- 283 (Activities 198-205)

Support material for unit (homework, class  discussion)

Powerpoint (C Paine) for topic 6.1  Allott & Mindorff reading: pp. 279-287
Powerpoint (images - Pearson text) for topic 6.4_  Allott & Mindorff reading: pp. 311-318
Powerpoints (S Taylor) for topics 6.2  Allott & Mindorff reading: pp. 290-301
Powerpoints (C Paine) for topics 6.3  Allott & Mindorff reading: pp.  303-309
Powerpoints (C Paine) for topic 6.5 Allott & Mindorff reading:  pp 319-327
Powerpoints  (C Paine) for topics 6.6 Allott & Mindorff reading: pp. 329-340

Digestion & Absorption (Topic 6.1) - It's all about Structure/Function

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It all starts in the mouth with saliva.  Saliva helps us swallow food, protects our teeth and even gives us a sense of sweetness as it converts starch to glucose. Anthropologist and evolutionary biologist Nathaniel Dominy, associate professor in the Department of Anthropology at Dartmouth College, has studied saliva from around the globe. He researches how humans acquire, process and assimilate food -- and how those behaviors affect the evolution of anatomical form and function.  Listen to the following short interview.

Be able to explain why a given structure is supportive of a corresponding function!  This is the basis of many of the questions on the Essential Biology packet.
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Villus
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Microvilli on SI epithelial cell
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fiber optic photography of digestion (some real, some not?) - click for video
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lymph circuitry - in addition to blood vessels
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Left: nice visual way to show the difference between absorption and assimilation....what is the destination? Above: SA/vol ratio...at three levels in the small intestine.
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Note how neatly digestion allows you to revisit the concepts of enzymes.
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ew.

6.4 - Gas   Exchange

                                               Shaf Keshavjee at TEDMED 2010
                                               lung "breathing" outside of body!
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Gas exchange (a) oxygen (red) from lungs TO capillary, (b) from capillary TO body cells. Carbon dioxide (blue) is shown in the reverse path
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Tissue level and cellular level diagrams of lung structure
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Photomicrograph of lung tissue - note the interconnectedness of lung and capillary tissues
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also look at the torso model in class and diagram below - note the internal and external intercostal (in between the ribs) muscles - which contracts with inspiration and which with expiration?
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also look at lung model in class and diagram below - what happens as the diaphragm contracts?
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external intercostals contract - expands thoracic cavity internal intercostal contract - decreases volume in thoracic cavity

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diaphragm contract - expand thoracic volume, diaphragm relaxes - decrease thoracic volume

6.2 Transport (Circulation) connected to Kidney 

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HOW DO THE VALVES WORK?
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valves in the heart maintain one-way flow of blood
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valves are also found in the veins of the legs - Why??
WHAT STARTS THE SYSTEM? MYOGENIC SINO-ATRIAL NODE.  NOTE WHAT IS MUSCLE AND WHAT IS NERVE TISSUE IN THE FOLLOWING (click on image to set animation)
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WHAT CONTROLS THE RATE?
     INCLUDE ROLES OF CARBON DIOXIDE, CHEMORECEPTORS IN THE BLOOD, 
    THE MEDULLA  OBLONGATA IN THE BRAIN, THE VAGUS NERVE, 
     EPINEPHRINE, AUTONOMIC CONTROL,   NEGATIVE FEEDBACK.
HEART MUSCLE NEEDS ITS OWN SOURCE OF BLOOD - CORONARY ARTERIES!
ARTERIES VS. VEINS...STRUCTURE/FUNCTION
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BLOOD COMPOSITION AND FUNCTION - SEE ALSO BLOOD TYPING LAB.

CAN   YOU   LIST   5   BIOCHEMICALS   CARRIED   DIRECTLY   IN   THE   PLASMA?  
TWO   BIOCHEMICALS   CARRIED   INDIRECTLY   BY   BLOOD CELLS?  
ONE   FORM   OF   ENERGY   CARRIED   BY   BLOOD?
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What's new?
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Disease and Immune System

TERMS AND CONNECTION TO THE NATURAL SELECTION TOPIC
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The Penicillin Story from Bottisham Village College
ANTIBODY FORMATION - WHAT ARE THEY AND WHAT DO THEY LOOK LIKE?
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OVERVIEW OF ALL THE CELLS ON THE IMMUNE TEAM
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RELEVANT TO HIV/AIDS:
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NATURAL IMMUNE RESPONSE
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OTHER IMPORTANT IMMUNOLOGICAL METHODOLOGY
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FROM THE 11.1 ESSENTIAL BIOLOGY ASSIGNMENT...
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Video Imaging of the Processes - in a small group, compose a voice-over...
TAKE   SOME   TIME   TO   WATCH   THIS   FILM...Public Health Case Study

   

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Based on Randy Shilt's 1987 book of the same name.  All real characters, played by many prominent actors who volunteered their time.  Excellent portrayal of the intersection of politics and science, especially the under-recognized area of public health.  Click on image to the YouTube link (or find the downloaded version on the lab tab for this unit.

A  REFLECTIVE   UPDATE
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From the website of the same name...and available on Netflix.


2011 marks 30 years since AIDS descended. Like an unrelenting hurricane, the epidemic roiled San Francisco for two decades and only began granting some reprieve with medical advancements in the late 90s. The death years of AIDS left the City ravaged and exhausted, yet, as in most of the developed world, the worst seems past. Though thousands are still living with HIV, and new infections continue at an alarming rate, the relentless suffering of the 80s and 90s has given way to a kind of calm, and, understandably, a degree of willful forgetfulness.  We Were Here utilizes San Francisco’s experience with AIDS to open up an overdue conversation both about the history of the epidemic, and the lessons to be learned from it.

Entertaining example of use of monoclonal antibodies (against human gonadotrophin, HCG - pregnancy test) and preview of final unit on reproduction.

6.5 - Neurons and Synapses

Neuron Structure

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http://www.microscopy-uk.org.uk/
A MORE DETAILED IMAGE OF A NEURON - 


Lots of diagrams and electron micrographs of these cells available.  This one tries to hybridize the two media.

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This is the man with the beautiful name...Louis-Antoine Ranvier, who discovered the nodes in 1878.

Use the following materials to make your own model of a neuron pathway

dominoes
mouse traps
small balls of various materials - pingping, soft plastic, pompoms



Evaluate the accuracy of your model - where is it a good representation, where does it fall short?

Watch this animation through to the end and do the learning exercises.

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This is a great place to make the connection between with the structure and function of the neuron and learning!

What does the myelin sheath actually do?

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What is the difference in the two types of conduction?  How does this connect to (1) demyelinating diseases, like MS? to (2) the requirement that infants drink high fat content milk?


6.6 - Reproductive System

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Fossilized live birth
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  • Home
  • SL Bio/Bio 2
    • SL/HL test review
    • SL Bio Blog/Review Discussion Site
    • Name that Sound
    • SL Bio - Topics >
      • Cells >
        • Surface Area/Volume Lab >
          • Types of Errors - more notes.
        • Processing Microscope Data
        • Soap Bubble Membranes
        • Plasmolysis Lab
        • Surface Area/Volume LabHL16 >
          • Types of Errors - more notes.
        • Cell Cycle Timing Lab
      • Biochemistry >
        • Enzyme Lab
        • Photosynthesis Lab
      • Genetics
      • Evolution
      • Ecology SL/Bio2
      • Physiology >
        • Sheep Heart dissection
        • Sheep Brain Dissection
      • SL Option A Neurobiology
  • SL Bio/Bio 2 (pre-2015 exams)
    • SL Bio - Topics >
      • Evolution >
        • Natural Selection Web Activities
        • Paper Worm Simulation - Data Collection and Processing
        • Coacervate Lab
        • Hominid Evolution - Skull Lab
      • Classification
      • Biochemistry >
        • Surface Tension Lab
        • Molecules of Life - Modeling Activity
        • Jmol molecule visualizations
        • Playdough and Toobers!
        • Enzyme Lab
      • SL Genetics >
        • Sockosomes/Chromosocks
      • Biotechnology >
        • DNA gel
        • Bacterial transformation lab
      • Physiology >
        • Digestion
        • Circulation/Gas Exchange >
          • Sheep Heart dissection
        • Nervous system
        • Nutrition - Option A
        • Defense Against Disease
        • Reproduction
      • Ecology >
        • Ecology DBQ practice
        • Population Growth Simulation
        • Emerging Disease Webquest
  • HL BIo Year 1 (pre-2015 exams)
    • Year 1 - Topics >
      • Cells >
        • Processing Microscope Data
        • Surface Area/Volume Lab >
          • Types of Errors - more notes.
        • Plasmolysis Lab
        • Cell Cycle Timing Lab
      • Biochemistry >
        • Surface Tension Lab
        • Molecules of Life - Modeling Activity
        • Jmol molecule visualizations
        • Playdough and Toobers!
        • Race for the Double Helix movie
        • Extraction
      • Metabolism >
        • Enzyme Lab
        • Photosynthesis/Respiration Lab
      • Genetics >
        • Sockosomes/Chromosocks
        • Corn genetics
        • Make a Face
      • Biotechnology >
        • DNA gel
        • Bacterial transformation lab
      • Ecology >
        • Ecology DBQ practice
        • Emerging Disease Webquest
        • Symbiosis in Termites
        • Population Growth Simulation
    • MSON Bioethics >
      • Ethics in Scientific Research
      • Bioethics Films
  • HL Bio Year 1
    • Year One Blog/Review Discussion SIte
    • Year 1 - Topics >
      • EvolutionHL2016
      • CellsHL2016 >
        • Cells: Class Flip Videos
        • Processing Microscope Data HL16
  • HL Bio Year 2
    • SL/HL test review
    • Year Two Blog/Review Discussion Site
    • Ecology Summer Work
    • Year 2 - Topics >
      • Plants
      • Biotechnology_ >
        • DNA gel_
        • Bacterial transformation lab_
        • Microarray
        • Natural Cloning
      • Physiology >
        • Sheep Heart dissection
        • Kidney Dissection
        • Sheep Brain Dissection
        • Chicken Wing Dissection
        • Sea Urchin Embryology
  • HL Bio Year 2 (pre-2015 exam)
    • Year 2 - Topics >
      • Evolution >
        • Natural Selection Web Activities
        • Paper Worm Simulation - Data Collection and Processing
        • Coacervate Lab
        • Hominid Evolution - Skull Lab
      • Phylogeny >
        • Constructing Cladograms
      • Plants >
        • Comparative look at animal developmental switches
        • Plant Microscope exercise
        • Plant Hormone Lab
        • Transpiration Lab
        • Plants and Micrographic Art
        • Plants and Human Art
      • Neurobiology >
        • Preview Topics
        • Neuron Action Potential Simulation
        • Connectome
        • Sheep Brain Dissection
        • Cow Eye Dissection
        • Invertebrate Behavior Lab
        • Altered Reality
        • Human Behavior Lab
      • Physiology >
        • Digestion Demos
        • Sheep Heart dissection
        • Blood typing
        • Kidney Dissection
        • AIDS Global Awareness
        • Virtual ELISA
        • Film - Politics, People and Science of AIDS
        • Chicken Wing Dissection
        • Sea Urchin Embryology
      • Review Project >
        • Review assignments, written by HL students
        • Web 2.0 Tools
  • IB Connections
    • TOK Connections >
      • Natural Sciences - TOK
    • MYP reference site
    • Extended Essay in Biology
    • Group 4 Project
    • Internal Assessment - 1st and 2nd year >
      • Advice on Internal Assessment
      • Uncertainty in calculations
      • t test/TI 83/excel
      • tips on mac excel graphs
      • Notes from IB worldwide report
      • Lab photo album
    • Advice for IB Papers >
      • Advice on IB Examinations
    • IB Learner Profile - How does HL Bio fit in?
  • Resources
    • for our SL friends
    • BioNinja
    • iBiology
    • Click4biology
    • Biozone Weblinks
    • IB Biology video review
    • Smullen Powerpoint
    • Wapole text
    • IB Guides
    • Recommended biology tutorials (besides IB)
    • Practice Tests/Exam Dates/Review Materials >
      • Review assignments, written by HL students
      • Knowledge audits
      • Biology Narratives - Review Activity
      • Organizational review assignment
      • Year 1 Final Review
      • Quizlets and Other Shared Reviews
  • Clubs and Committees
    • Science Olympiad >
      • 2012 Science Olympiad Team in action
      • Photos from the 2013 Olympiad
    • Bioethics Bowl >
      • Villanova Bioethics Competition >
        • Team Pictures - 2012
      • Peace and Ecology Committee
  • Biotechnology