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Objectives |
Learning
Activities
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Resources
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5.1.1 Explain
why digestion of large food molecules is essential
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Digestion
Experiment: Why is digestion of
large food molecules necessary?
To construct a diagram of the digestive system showing the important
enzymes and structures listed in the syllabus - see instruction sheet |
Hand in the diagram.
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5.1.2
Explain the need for enzymes in digestion.
5.1.3
State the source, substrate, products and optimum pH conditions for
one amylase, one protease and one lipase
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Enzymes - what do we remember from IGCSE?
Learn IB details for
salivary amylase, protease, and lipase.
Planning Assessment Investigation on the optimum pH of catalase enzyme.
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Model Answer for IB Digestion Qn.
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5.1.4
Draw a diagram of the digestive system & 5.1.5 Outline
the functions of main organs.
5.1.6 Distinguish
between absorption and assimilation & 5.1.7
Explain the structure & function of the villus
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Outline the functions of the stomach, small intestine and large intestine.
Absorption and assimilation, the role of villi in the duodenum.
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Digestion Revision Questions.
example essay question
(incl. mark scheme)
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5.2.1 Draw
a diagram of the heart...
5.2.2
Describe the action of the heart ...
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The Transport System
The action of the heart to pump blood and the structures of the
chambers and the valves.
Heart Dissection Experiment
The structure and function of capillaries, arteries and veins.
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Question on heart beat.
Exam questions in Collins p263 are excellent
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5.2.3 Outline
the control of the heartbeat...
5.2.4 Explain
the relationship between the structure and function of arteries,
capillaries and veins
5.2.5
State the composition of blood.
5.2.6
State six substances that are transported by the blood.
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Control of Heart Beat
The heart continues to beat even when removed from the body.
Control of heart beat is said to be "myogenic"
and how the
blood carries a range of substances.
Blood and Blood vessels task
Composition of the blood:
plasma, erythrocytes, leucocytes (phagocytes, lymphocytes), platelets* Heart
Disease article Heart Diseases No2
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The questions sheets on the heart and ECGs and blood vessels.
Read pages 144 and 146 of Fullick.
Heart Beat Simulation
simulation
animated gif of heartbeat
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5.3.1 Define
Pathogen & give one example from each of the 5 groups.
5.3.3 List
six methods of pathogen transmission and entry...
5.3.4 Describe
... one human bacterial disease
5.3.5 Explain
why antibiotics are effective against bacteria but not viruses
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Pathogens and Disease
Five types of organism cause disease,
They can be transmitted in a variety
of ways..
but the body has sophisticated defenses.
Look at the way antibiotics kill bacteria. Anthrax
in particular.
Antibiotics Article
Experiment to test antibiotic effectivity Photo
results
A human bacterial disease - mrsa
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Bacterial and Viral Pathogens website
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5.4.1 Explain
how skin and mucous membranes act as barriers against pathogens.
5.4.2
Outline how phagocytic leucocytes ingest pathogens
5.4.3
State the difference between antigens and antibodies.
5.4.4
Explain antibody production (HL has extra detail))
5.3.6 Explain
... ... AIDS.
5.4.5 Outline
the effects of HIV on the immune system
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Defense
Find out the roles of
Influenza - as a specific example
HIV and AIDS attacks the immune system.
- the number of "helper T-cells" is reduced
- communiation between cells of the immune system is reduced
- the immune system becomes less efficient and
"opportunistic" viruses, bacteria, fungi or protoctista
cause infestions
Revision questions about HIV
Human Immunitiy Questions
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Read pages 76 to 78 in Fullick and answer question 2 on page 85.
Defenses
against diseases.
HIV
lifecycle animation
HIV
Information
Catching
HIV
Some good
news
AIDS and Diseases
there is a lot of information on this site.
News
on HIV in 2002.
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5.5.1 List
the features of alveoli ...
5.5.2 State
the difference between ventilation, gas exchange and cell
respiration
5.5.3 Explain
the necessity for a ventilation system
5.5.4
&5 Draw a diagram of the ventilation system.
& Explain the mechanism of ventilation
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Gas Exchange
Revise the structure of the lungs and alveoli which we covered in the
Induction Period (y12).
Five Adaptations of the alveoli for gas exchange.
Why is ventilation needed.
The Mechanism of ventiliation; functions of diaphragm, intercostal
muscles, abdominal muscles.
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Student Notes and Past
paper questions
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5.6.1 Define HOMEOSTASIS
5.6.2 Explain
homeostasis & negative feedback
5.6.3 State
that “the nervous and the endocrine systems are both....
5.6.4 State
“the nervous system consists of .....
5.6.5 Describe the control of body
temperature.
5.6.6 State
that “the endocrine system consists of....
5.6.7 Explain the control of blood
glucose ...
5.6.8 Define
excretion.
5.6.9 Outline
the role of kidney ....
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Homeostasis and Excretion
Describe homeostasis with reference to body temperature, control of
water and blood glucose levels.
Questions about
thermoregulation
Carry out experiments to measure perspiration, to simulate homeostasis
with a bunsen and thermometer, and test urine for glucose.
Comparisons of nervous and hormonal control mechanisms for temperature
and glucose.
Questions on glucose control
Diabetes notes (useful for
the Assessed Expt)
Assessed
Experiment on Blood Glucose Levels
Simple Kidney function in osmoregulation & excretion.
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Reports of the experiment on sweating.
Labelled diagram of the skin and an explanation of how it controls body
temperature.
Adaptations in duck legs and polar bears and elephants and camels.
Flow diagram of the events which control glucose levels in liver,
muscles, adipose (fat) tissue and pancreas.
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5.7.1
Draw diagrams of the adult male & female reproductive systems.
5.7.2
Explain the role of hormones in puberty.
& menstrual cycle.
5.7.3 List
the secondary sexual characteristics
5.7.4 State
the difference between copulation and fertilization.
5.7.5 Describe
early embryo development
5.7.6 State
that the fetus is supported and protected by ......
5.7.7 State
... ... placenta details.
5.7.8 Outline
the process of birth and its hormonal control.
5.7.9 Describe
four methods of ... contraception. & 5.7.10
Discuss the ethical issues.
5.7.11
Outline the technique of amniocentesis. & (5.7.12) IVF.
5.7.13
Discuss ethical issues of IVF.
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Reproduction
Urinogenetal organs
use this link.
Hormonal control of puberty and menstrual cycle.
Questions on secondary sexual
characteristics.
Embryo development - early stages only
Visible Embryo Website
Embryo Videos
Implant the Blastocyst
game
Protection and nutrition of developing embryo
Birth and it's hormonal control
Family planning and IVF
Immobilized enzyme
experiment
Embryo research.
Reproduction Essay Questions
HL and SL
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Diagrams and their labels
Graphs of the levels of hormones during the menstrual cycle.
Questions
power point presentations of the first divisions of developing embryos.
Answers to questions about contraception and family planning.
(inc IVF)
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Extension
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Analysis of your diet and some
of the foods you eat using Nutrition
Analysis Tool and Diet
Health links or Diet Analysis web
pages in addition to the details in the text book.
The control of Breathing
Carbon Dioxide concentration, blood pH, chemoreceptors, breathing
centre, muscle groups, involuntary control.
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