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What is a biofuel?
A biofuel is a fuel made up of organic matter/biological matter (plants). The energy in biofuels originates from sunlight used in photosynesis.Photosynesis produces the biomass in plants and this biomass can be used directly or indirectly as biofuel
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What is carbon neutral?
When a biofuel produces the same amount of carbon dioxide as is burnt.
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What turns sugar into fuel?
Thermentation
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What is DIFFUSION?
Diffusion is the movement of particles from a high to a low concentration until they reach equilibrium.
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What is OSMOSIS?
Osmosis is the movement of water from a high concentration across a partially permeable membrane e.g a cell membrane.
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What does HYPOTONIC mean?
Hypotonic means there is a high concentration of water and a low concentration or no solute.
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What does ISOTONIC mean?
Isotonic means that the two solutions will have the same concentration of both solute and water.
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What does HYPERTONIC mean?
Hypertonic means that there is a high concentration of solute (sugar) and a low concentration or no water.
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What is ACTIVE TRANSPORT?
Active transport is the process of which solutes are transported from a low conentration to a high concentration. Therefore it is going against its concentration gradient through the carrier protein.
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Where are all digestive enzymes made?
All digestive enzymes are made in the pancreas.
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What is the function of the lungs?
Gaseous Exchange - take in oxygen from air in lungs to the blood, remove carbon dioxide from blood to air in the lungs.
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Name some adaptations of a leaf?
Thin - short distance for the carbon dioxide to diffuse. Flattened Shape - increased surface area for diffusion. Air Spaces in leaves - allows carbon dioxide to come into contact with lots of cells so large surface area for diffusion.
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What is transpiration?
Transpiration is the loss of water from the plant. Transpiration is caused by evapouration and diffusion of water from inside the leaves.
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Card 2

Front

What is carbon neutral?

Back

When a biofuel produces the same amount of carbon dioxide as is burnt.

Card 3

Front

What turns sugar into fuel?

Back

Preview of the front of card 3

Card 4

Front

What is DIFFUSION?

Back

Preview of the front of card 4

Card 5

Front

What is OSMOSIS?

Back

Preview of the front of card 5
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