Problems and solutions in the environment

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What type of drug is caffeine?
Stimulant
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How does carbon monoxide damage the body?
Reduces the body's ability to carry oxygen
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What is a long term affect of alcohol use?
Liver damage
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What effect does a depressant have on the heart rate?
Slows it down
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What is a carcinogen?
A chemical that can cause cancer
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What is a pathogen?
A disease-causing microorganism
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Which type of microorganisms are most pathogens?
Bacteria
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One of the main problems with viruses is that they:
damage the host cell when they reproduce
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Which of these is one of the main problems with bacteria?
They produce toxins.
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Which of the following is a virus? - Cholera; Tetanus; Polio
Polio
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What is a lysozome?
An enzyme that kills bacteria
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What is one way that antibiotics work?
They can stop bacteria from reproducing
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Which of the following is an example of vertical transmission?
A disease passing from a mother to her unborn child
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How is TB transmitted?
Droplets in the air
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What does variation mean?
Difference between characteristics in different organisms
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Some bacteria are resistant. What does this mean?
They aren't killed by an antibacterial agent
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Which of the following are effective against bacteria?
Antibiotics
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Why are some bacteria becoming resistant?
Overuse of antibiotics
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Which of the following is a resistant bacteria? - HIV; The Flu; MRSA
MRSA
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What is biomass?
The amount of biological material
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If the number of brown trout decreases due to over fishing, what would be the most likely effect on the dragonfly nymph population?
The population increases
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What happens to the amount of energy transferred from one step to the next in a food chain?
It decreases
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What do food chains always start with?
A producer
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Why is energy lost in a food chain?
Energy is lost to bodily process eg respiration and growth
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What is mutualism?
When two different organisms rely on each other to survive
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What type of feeding relationship does mistletoe show?
Parasitism
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Which of the following is not an indicator of air pollution: - Blackspot fungus on roses; the presence of lichens; the presence of bloodworm
The presence of bloodworm
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Which of the following is a positive impact of humans on the environment? - Raw materials being used up; recycling increasing; more waste being prudced
Recycling increasing
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What effect does sulfur dioxide have on the environment?
Contributes to acid rain
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Which type of lichens can survive in quite polluted air?
Crusty
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What causes eutrophication?
Fertilisers in water
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Why do we need to recycle metals?
We use less energy recycling materials
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Why are alloys difficult to recycle?
They are mixtures of metals
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Which process adds carbon dioxide to the atmosphere?
Respiration
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Which of the following is not a method of converting nitrogen to nitrates? - Denitrifying bacteria; Lightning; Nitrogen fixing bacteria
Denitrifying bacteria
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What is nitrogen used for in a plant?
Making proteins
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How do plants take in nitrogen?
Through the roots
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In what form is nitrogen taken into a plant?
Nitrates
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Which of the following plants would have nitrogen fixing bacteria? - Peas; tomatoaes; cabbages
Peas
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What word describes the relationship between the plant and nitrogen-fixing bacteria?
Mutualistic
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Which microorganism turns nitrogen gas into ammonia?
Nitrogen fixing
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Which microorganisms convert nitrates to nitrites?
Denitrifying bacteria
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Which microorganism turns ammonia into nitrates?
Nitrifying
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Which of the following is another method for fixing nitrogen? - Nitrogen dissolving in rainwater; plants taking in nitrogen through their leaves; lightning
Lightning
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What is the name of the soil bacteria that convert proteins and urea into ammonia?
Decomposers
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Other cards in this set

Card 2

Front

How does carbon monoxide damage the body?

Back

Reduces the body's ability to carry oxygen

Card 3

Front

What is a long term affect of alcohol use?

Back

Preview of the front of card 3

Card 4

Front

What effect does a depressant have on the heart rate?

Back

Preview of the front of card 4

Card 5

Front

What is a carcinogen?

Back

Preview of the front of card 5
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