Transcript Species at War

Species at war
student summary
Disease
CONCEPTS
I can understand that…
QUESTIONS
Evidence

How can we avoid infection?
Why don't we feel ill as soon
as we're infected?
Our body has ways of keeping
microbes out but if they enter our
immune systems usually destroys them.
How do we destroy microbes
that get into our tissues?
Antibiotics can cure bacterial
infections, but resistant microbes
develop when the toughest survive
and reproduce.
Why are some infections
impossible to treat?
Why are we are immune to
most diseases once we have
been infected once, or
vaccinated?
Vaccines make us immune to
specific infections.
FACTS
There are 4 types of microbe: bacteria, viruses, protozoa
and fungi.
Bacteria, fungi and protozoa are living cells but viruses
are just tiny packages of genes inside protein coats.
We pick up microbes from contaminated water, food,
animals and other people.
Some white blood cells engulf microbes, others
produce antibodies.
We have many antibiotics but few drugs to combat
other microbes.
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Evidence
What makes us ill?
There are microbes everywhere. Most
are harmless but a few cause diseases
by invading our tissues and multiplying
inside us.
I can remember that…
I can answer…
SKILLS
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I know how to…
Prepare microscope slides
Use a microscope
Wash my hands thoroughly
K E Y W O R D S
antibiotic
antibody
B cell
bacteria
diagnostic tests
fungi
immune
macrophage
protozoa
resistant
vaccine
virus
Species at war
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student summary
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I can understand that…
Pandemic
QUESTIONS
S
Evidence

Models are simplified descriptions
of reality that help to explain
scientific ideas or make predictions.
I can answer…
Evidence

What use are models?
They can be objects, ways of
thinking or simulations.
Models are not exactly like the
real thing and we can often use
different models to explain the
same idea.
What if our model
isn't right?
Every model has strengths and
weaknesses and may need to be
changed to explain new
observations.
SKILLS
F A C T S
I can remember…
Physical models show things visually.
Thinking models use analogies to explain ideas.
Computer models can animate processes or show
changes over time.
A model is 'good enough' if it explains an idea or
allows accurate predictions to be made.
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I know how to…
Use a model to make a prediction.
Recognise when a model isn't good
enough.
K E Y W O R D S
analogy
computer model
good enough
model
physical model
thinking model
simulation
Species at war
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student summary
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P
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I can understand that…
Paradise Island
QUESTIONS
S
Evidence

I can answer…
What makes plant and
animal numbers rise and fall?
The living things in an ecosystem are
interdependent, which means that
changes in the population of one
species affects other species' numbers.
What decides how fast plants
grow?
The population of each species also
depends on competition, predators,
pollutants and diseases.
Why are there more
herbivores then carnivores?
Population sizes often change when
new species enter an ecosystem.
How can we control
population sizes?
Energy and biomass are transferred
to consumers by eating, and to
decomposers by decay.
How can we control pests?
SKILLS
Plants use photosynthesis to
convert carbon dioxide and water
into glucose and oxygen.
Use food chains, food webs, pyramids of number and
pyramids of biomass to show feeding relationships
between organisms.
KEYWORDS
The more biomass plants produce,
the more animals their ecosystem
can sustain.
F A C T S
How to use these words correctly: biodiversity, biomass,
ecosystem, habitat, producer, consumer, herbivore,
carnivore, predator, prey, food chain, food web.

I know how to…
Glucose is used for respiration and to
build new tissues, which increase the
plant's biomass.
I can remember…
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Evidence
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biodiversity
biomass
carnivore
competition
consumer
decomposer
ecosystem
energy
food chain
food web
habitat
herbivore
non-native organism
omnivore
photosynthesis
population
predator
prey
producer
pyramid of biomass
pyramid of number
Species at war
student summary
Big Science
CONCEPTS
I can understand that…
QUESTIONS
Evidence

New technologies, like vaccines and
medicines, change lives but they take
years to develop and cost millions.
I can answer…
Evidence

How can one person
change things?
Different technologies can be used
to tackle the same problem.
Who decides what
scientists investigate?
Breakthroughs used to be made by
individuals working alone, but today
science is huge and expensive.
SKILLS
The purpose of most research has
shifted from being a 'quest for
knowledge' to finding ways to
improve health and the environment,
or increase profits.
Extract relevant information from secondary
sources.
FACTS
I can remember…
An example of a scientific or technological
development that has changed lives.
Most scientists are employed by governments, big
companies and charities.
Charities fund research to improve health and the
environment.
Industry funds research that will increase profits.
Governments fund research that will improve the
environment or make the country richer and healthier.
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I know how to…
K E Y W O R D S
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antibiotic
anti-malarial
medicine
antiseptic
antitoxin
diagnostic test
eradication
insecticide
malaria
protozoa
resistant
vaccine