biology core 1.1-1.10

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What happens to your body when you take in too much energy or too few vitamins?
you become malnurished
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why do people become obese?
the take in to much energy compaired to the energy used daily
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why do starving people struggle to walk?
because they dont have enough energy or they have a disease
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how can people change their lifestyles to help lower their blood cholestrol level?
increase amount of time doing exercise and reduse amount of saturated fat you intake daily
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how do pathogens make you ill?
they produce toxins
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why did it take people so long to accept the ideas of semmelwiss?
they didnt know aboout bacteria or viruses
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how are many pathagons prevented from entering the body?
by skin (mucuc and stomach acid are also aloud)
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how do white blood cells defend the body?
they produce antibodies and antitoxins that counteract the toxins the pathagons have produced then it ingests pathagons with distroys them
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why are antibiotics only able to kill bacteria?
because viruses are found inside the body cell
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why do industrial labortories use 35 degresinstead of 25 degres as in schools?
because bacteria grows faster in hotter climates
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how do you make sure unwanted microorganisms do nt contaminate a pure culture of bacteria?
heat all equipment,boil solution and cover the disk/flask
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why do pathagons spread rapidly?
very few people are immune to new pathagons
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how does natural selection cause resistant populations of bacteria develop?
the antibodies kill the non-resistant strains which allows the resistant one to survive and reproduce
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what is ment by vaccination?
a injection of a dead, weakened or unactive form of the pathagon to simulates your white blood cells to produce antibodies for if you come in contact with the pathagon again
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what are the advanatages and disadvanatges of vaccinations?
a disadvantage is if your body produces to many antibodies a new strain of bacteria may be developed an advantage is they protect you body from serious diseases that may cause death
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why is it necessary to develop new medicines?
some bacteria is resistant to a drug
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Other cards in this set

Card 2

Front

why do people become obese?

Back

the take in to much energy compaired to the energy used daily

Card 3

Front

why do starving people struggle to walk?

Back

Preview of the front of card 3

Card 4

Front

how can people change their lifestyles to help lower their blood cholestrol level?

Back

Preview of the front of card 4

Card 5

Front

how do pathogens make you ill?

Back

Preview of the front of card 5
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