Biology unit 1 key terms

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  • Created by: lydia
  • Created on: 04-05-13 19:21
Being healthy
having the right balance of foods.
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malnurished
the body is not nurirshed due to an unbalanced diet leading to the person being over weigh or underweight.
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metabolic rate
the rate at which chemical reactions take place in the body.
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pathogen
microbes that cause infectious diseases.
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semmelweiss
a doctor who recognised the importance of doctors washing their hands.
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vaccines
small quantities of dead or unactive pathogen injected into a human to make them immune from the disease.
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the nervous system
enables humans to react to their surrondings.
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internal conditions
water content of our body, temperature, blood sugar levels, ion content of the body.
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FHS
secreted by the pituitary gland, causing eggs to mature in the ovaries. Stimulating the ovaries to produce oestrogen.
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LH
Stimulates the release of eggs from the ovary
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oestragen
secreated by the ovaries and inhibits further production of fhs.
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auxin
promotes growth on the side it is found.
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drugs
change the chemical processes in peoples bodies so that they become dependent and suffer with drawl symptoms without them.
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thalidomide
drug developed as a sleeping pill, cured morning sickness gave those babies severe limb problems and now is used for leprosy.
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plants compete for...
light, space, nutrients and water
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animals compete for....
food, mates, territory.
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pyramid of biomass
the biomass at each stage in the food chain gets less than what it was in the previous stage, this can be drawn to scale.
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perfect conditions for decay...
warm, moist and aerobic conditions.
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gametes
sex cells
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sexual reproduction
fusion of male and female gamets. The mixture of genetics info from two parents leads to a mixture of offspring.
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asexual reproduction
no fusions of gametes, 1 single parent and no genetic variation, the off spring are clones.
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GM crops
new genes transfered to crops to make them better.
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tissue culture
using small groups of cells from part of a plant
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embryo trnasplant
splitting apart cells from a developing animal embryo before they become specialised then transplanting the identical embryos into host mothers.
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adult cell cloning
the neucleus is removed from a unfertilized egg cell, replacing it with a nuclues of an adult body cell. The cell is given an electric shock so the egg cells begin to divide forming an embryo.
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natural selction
mutations in a animal characteristics may give them a better chance for survival and produce more off spring to pass the gene onto.
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Other cards in this set

Card 2

Front

malnurished

Back

the body is not nurirshed due to an unbalanced diet leading to the person being over weigh or underweight.

Card 3

Front

metabolic rate

Back

Preview of the front of card 3

Card 4

Front

pathogen

Back

Preview of the front of card 4

Card 5

Front

semmelweiss

Back

Preview of the front of card 5
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