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31 Cards in this Set
- Front
- Back
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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...
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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...
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fungi and bacterium.
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The best conditions for decay are..
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warmth, moisture and a plentiful supply of oxygen.
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A new medicine must be tested for...
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effectiveness, safety and stability.
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The three steps of drug testing are...
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laboratory testing followed by animal testing followed by a clinical trial on human volunteers.
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A double blind test...
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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...
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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...
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the dependence on a drug.
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When an addict gives up a drug...
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they may suffer withdrawal symptoms.
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Drugs generally affect the...
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nervous system.
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An example of an illegal drug is...
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Cocaine, Heroine, Cannabis, etc.
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An example of a legal recreation drug is...
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Alcohol.
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Anabolic steroids...
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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...
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they want to win at any cost. |
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An argument against performance-enhancing drugs is that...
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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...
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Jean-Baptiste Lamarck and Charles Darwin. |
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Lamarck believed that animals...
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adapted and changed through the inheritance of acquired characteristics.
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Lamarck believed that a characteristic used more by an animal...
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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...
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survival, breeding and genes being passed on.
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The theory of evolution states that..
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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...
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more offspring than can survive. |
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Mutation is...
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the change in genetic material which results in the new form of a gene. |
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Classification is...
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the organisation of organisms into groups according to their similarities. |
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The way in which this is displayed is known as...
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the evolutionary tree. |
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How much energy do organisms pass on?
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10% |
