B3 exam

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  • Created by: Romilly
  • Created on: 28-04-13 17:22
Name four factors which make exchange surfaces as effective as possible
Large surface area, thin (short diffusion path), good/efficient blood supply (only in animals), are ventilated (only in animals)
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What blood vessel has a very small lumen and is very thin?
Capillaries
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What blood vessel has valves?
Veins
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What blood vessel has strong elastic fibers?
Arteries
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How are red blood cells adapted to their job?
Concave shape, flexible, no nucleus, hymoglobin
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What do platelets do?
Clot the blood to stop microorganisms and bacteria getting in to a wound.
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What is carried in the plasma?
Red and white blood cells, platelets, glucose, amino acids, hormones, carbon dioxide, urea, antibodies and antitoxins
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Name three circulation aids
Artificial blood, artificial heart parts and stents
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What needs to be controlled in the body?
Body temperature, glucose levels, water content, ion content, carbon dioxide and urea.
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There is less land, due to what human activity?
Building, farming, dumping waste in landfill and quarrying.
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Where is carbon dioxide stored naturally?
Oceans, lakes, peat bogs and green plants.
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What can be used to produce biogas?
Sewage waste, animal waste, plant waste and waste from sugar factories.
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What are some environmental factors of bio fuels?
Are carbon neutral, doesn't release pollution, better fertiliser, waste disposal system and methane is used up not released into the atmosphere.
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What are some economic factors of bio fuels?
Cheap raw material, cheaper to buy and better for developing countries.
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Other cards in this set

Card 2

Front

What blood vessel has a very small lumen and is very thin?

Back

Capillaries

Card 3

Front

What blood vessel has valves?

Back

Preview of the front of card 3

Card 4

Front

What blood vessel has strong elastic fibers?

Back

Preview of the front of card 4

Card 5

Front

How are red blood cells adapted to their job?

Back

Preview of the front of card 5
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Comments

clara bernardi

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i think that this is even worse than your previous flip card post romily i must say you need to get your act toghether because this is just disappointing

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