GCSE Biology

all biomass comes from...
the sun ( stars)
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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 mass is lost in things like respiration and is wasted.
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during energy transfer, energy is lost in...
movement, waste, and homeostasis
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what is homeostasis...
Homeostasis or homoeostasis is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Examples of homeostasis include the regulation of temperature and the balance between acidity
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decomosers...
break down waste and dead oranisms
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examples of decomposers are...
fungi and bacteria
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a new medicine mst be tested for...
effectiveness, safety and stability
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the three steps of a drug trial are...
lab tests, cruel animal tests and clinical trials.
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a double blind test is
whereby both the doctor ad the patient dont know which drug is a lecebo and which is real
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a drug is...
a substance which changes the way the body works.
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a drug can be used for...
medcinal and recreational means
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an example of a illegal drug is...
cocaine, meth
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anabolic steroids...
increase muscle mass
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an example an athlete can use in the include in the inclusion of a performance enhancing drug is...
they want to win at any cost
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the original evolutionary theories were put across by
Lamarque and Darwin
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Lamarque believed that
animals exolved through the inheritence of aqquired characteristics
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Lamarque believed that characteristics used more by an animal...
became stronger and better and passed on though breeding.
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the three main stages of Darwins theory are...
survival, genes and passing on. survival of the fittest
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the problem with darwins theory were...
it went against the bible
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animals and plants usually produce...
more offspring than can survive
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mutation is...
a change in genetic material which causes a change in the being
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classification is...
the organisation of organisms into there different characteristics
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the way this is displayed as is called ...
the evolutionary tree
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Other cards in this set

Card 2

Front

biomass is...

Back

the mass of material built in living organisms.

Card 3

Front

the amount of energy decreases at each stage of a pyramid of biomass because...

Back

Preview of the front of card 3

Card 4

Front

during energy transfer, energy is lost in...

Back

Preview of the front of card 4

Card 5

Front

what is homeostasis...

Back

Preview of the front of card 5
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