KS3 Yr8 Detecting Respiration

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button if available to get a clue. Note that you will lose points if you ask for hints or clues!
   4      5      blood      carbon dioxide      diffuses      diffusion      dissolve      exhaled      gills      inhaled      large surface area      less      oxygen      releases   
The air we breath in is called the air.
The air we breathe out is called the air.

21% of the air we breathe in is gas.
The air we breathe out has 16% oxygen gas so that means that % has been taken in by our lungs.

0.03% of the air we breathe in is gas.
The air we breathe out has % carbon dioxide gas so that means that 3.97% of the carbon dioxide came from our lungs.

Air including oxygen can in water.

Plants that grow underwater get their oxygen by the process called . Oxygen from the water into the cells.

Fish however gets their oxygen by taking in water through the mouth and forcing it over the .

The gills have and a good supply so that oxygen can diffuse from the water into the blood very quickly.

When the water is warm oxygen is dissolved and any fish living in the water can die. This can happen near power stations because power stations warm water.

 

 

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