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30 Cards in this Set
- Front
- Back
All biomass comes from... |
the sun. |
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Biomass is... |
the mass of material built in living organisms. |
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The amount of energy decreases at each stage of a pyramid of biomass because... |
not all organisms are eaten by the stage above, some material is lost in waste and biomass is lost in respiration. |
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During energy transfer, energy is lost in... |
movement, waste and maintaining a constant body temperature. |
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Decomposers... |
break down waste and dead organisms. |
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Examples of decomposers are... |
fungi and bacterium. |
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The best conditions for decay are.. |
warmth, moisture and a plentiful supply of oxygen. |
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A new medicine must be tested for... |
effectiveness, safety and stability. |
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The three steps of drug testing are... |
laboratory testing followed by animal testing followed by a clinical trial on human volunteers. |
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A double blind test... |
is a test to gauge the effectiveness of a drug by giving some patients a placebo and some patients the new drug. |
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A drug is a... |
substance that alters the way in which the body works. |
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A drug can be used for both... |
recreational and medical means. |
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An addiction is... |
the dependence on a drug. |
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When an addict gives up a drug... |
they may suffer withdrawal symptoms. |
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Drugs generally affect the... |
nervous system. |
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An example of an illegal drug is... |
Cocaine, Heroine, Cannabis, etc. |
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An example of a legal recreation drug is... |
Alcohol. |
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Anabolic steroids... |
help to build up muscle mass. |
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An argument that an athlete may use for the inclusion of performance-enhancing drugs in sport is... |
they want to win at any cost. |
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An argument against performance-enhancing drugs is that... |
sport is only meant to be a measure of natural skill and training. |
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The original theories of evolution were put across by... |
Jean-Baptiste Lamarck and Charles Darwin. |
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Lamarck believed that animals... |
adapted and changed through the inheritance of acquired characteristics. |
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Lamarck believed that a characteristic used more by an animal... |
became stronger and better and was then passed on to the next generation. |
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The three main stages of Darwin's theory of natural selection are... |
survival, breeding and genes being passed on. |
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The theory of evolution states that.. |
all organisms developed from simple life forms of 3 billion years ago. |
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The main problems of Darwin's theory were that... |
many people believed in the bible, there was insufficient evidence and there was no understanding of genetics. |
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Animals and plants produce... |
more offspring than can survive. |
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Mutation is... |
the change in genetic material which results in the new form of a gene. |
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Classification is... |
the organisation of organisms into groups according to their similarities. |
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The way in which this is displayed is known as... |
the evolutionary tree. |