584122
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Mind Map by ellie.reynolds, updated more than 1 year ago
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Created by ellie.reynolds
about 11 years ago
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Biology B1:Topic 3
- Effects of drugs
- A drug is a chemical that
affects the central nervous
system. So a drug can
change your psychological
behaviour, which is the way
you think or feel. For example,
narcotis are drugs that make
you feel sleepy. Some drugs
can cause addiction. This
means hat the person
becomes dependent on taking
the drug and feels they
cannot function properly
without it
- A drug is a chemical that
affects the central nervous
system. So a drug can
change your psychological
behaviour, which is the way
you think or feel. For example,
narcotis are drugs that make
you feel sleepy. Some drugs
can cause addiction. This
means hat the person
becomes dependent on taking
the drug and feels they
cannot function properly
without it
- The effects of alchol
- Ethics and transplants
- Some diseases can be cured by transplanting a healthy organ from a person who
has just died into a patient whose organ is damaged. There are never enough healthy
organs available for all who need transplants, and many patients will die while waiting
for an organ.
- Ethics is about what you think is right or wrong. fair or unfair:
different people may make a different choice depending on their
point of view
- Some diseases can be cured by transplanting a healthy organ from a person who
has just died into a patient whose organ is damaged. There are never enough healthy
organs available for all who need transplants, and many patients will die while waiting
for an organ.
- Pathoges and Infections
- An infectious disease is one that can be passed from one person to another. A pathogen is
an organism that causes an infectious disease
- An infectious disease is one that can be passed from one person to another. A pathogen is
an organism that causes an infectious disease
- Antiseptics and antibitorics
- Antibiotics kill but the most resistant bacteria. If these bacteria get into the
environment, they can cause antibiotic-resistant infections. The risk of
more people getting antibniotic resistant infections can be reduced if:
- Antibiotics kill but the most resistant bacteria. If these bacteria get into the
environment, they can cause antibiotic-resistant infections. The risk of
more people getting antibniotic resistant infections can be reduced if:
- Interdependence and food webs
- Chemical energy is transferred from organisms along a food
chain or in a good web. All living organisms are independent due
to their feeding relationship.These relationships are dynamic
(always changing), because a change in number of organisms in
one trophic level (feeding level) will affect the other trophic levels
- Energy Transferred along the food chain as
chemical energy in the food that each animal
eats
- Pyramids of Biomass- a diagram that shows theamount
of biomass (usually as g/m2) at each trophic level of a
food chain. The producer level is the bottom bar and the
other bars shows the trophic levels in order. The amount of
biomass at each trophic level along the food chain gets
smaller. This is because some energy at each lost is
transferred as heat energy to the environment. Food
chains are usually no more than 4 or 5 tropic levels long
because there is not enough biomass in the top level to
provide the energy needed by another trophic level.
- Pyramids of Biomass- a diagram that shows theamount
of biomass (usually as g/m2) at each trophic level of a
food chain. The producer level is the bottom bar and the
other bars shows the trophic levels in order. The amount of
biomass at each trophic level along the food chain gets
smaller. This is because some energy at each lost is
transferred as heat energy to the environment. Food
chains are usually no more than 4 or 5 tropic levels long
because there is not enough biomass in the top level to
provide the energy needed by another trophic level.
- Chemical energy is transferred from organisms along a food
chain or in a good web. All living organisms are independent due
to their feeding relationship.These relationships are dynamic
(always changing), because a change in number of organisms in
one trophic level (feeding level) will affect the other trophic levels
- Parasites and mutualists
- A parasite feeds on another organism (the host) while they are
living together. Taking food from the host usually harms it but
doen't kill it. A parasite may be a plant or an animal
- Mutualism: when two organisms live
closely together in a way that benefits
them both, they are called mutualists
- A parasite feeds on another organism (the host) while they are
living together. Taking food from the host usually harms it but
doen't kill it. A parasite may be a plant or an animal
- Pollution
- Pollution indicators
- The carbon cycle
- A diagram of the carbon cycle shows how the element carbon passes
between the environment and living organisms. In the air, the carbon is
part of carbon dioxide gas. In organism, the carbon is part of complex
carbon elements
- A diagram of the carbon cycle shows how the element carbon passes
between the environment and living organisms. In the air, the carbon is
part of carbon dioxide gas. In organism, the carbon is part of complex
carbon elements
- The nitrogen Cycle
- The diagram of the nitrogen cycle shows how the element nitrogen moves
between living organisms and the environment
- The diagram of the nitrogen cycle shows how the element nitrogen moves
between living organisms and the environment
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