• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Gas and Exchange in a Protozoan

Extracts from this document...

Introduction

Gas and Exchange in a Protozoan Protozoa are small, unicellular, eukaryotic organisms, belonging to the kingdom Protoctista. The term 'protozoa' is used more for the animal-like single celled organisms like amoebas and ciliates. Examples of protozoa are Amoeba spp. ...read more.

Middle

They are not large organisms; therefore the oxygen is able to diffuse very quickly to wherever it is being used. They also live in quite moist conditions. This helps the exchange of gases as this factor is greatly beneficial to a high rate of gas exchange. ...read more.

Conclusion

Therefore there is a greater rate of diffusion into the organism, along a concentration gradient and combined with a moist surface, it will be a very high rate. The opposite is found for Carbon Dioxide where there is a high concentration of the gas inside the protozoa and outside there is a lower concentration of Carbon Dioxide. This will therefore create a high rate of diffusion out of the organism, again along a concentration gradient. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Energy, Respiration & the Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Energy, Respiration & the Environment essays

  1. Marked by a teacher

    Effect of nitrate concentration on the growth of Duckweeds

    5 star(s)

    The light - independent reaction takes place in the stroma of the chloroplast, and the reaction needs energy and H ions to keep the cycle going. B The fronds were in a constant environment, where each frond was exposed to the equal amount of CO2.

  2. the effect of bile concentration on the activity of the enzyme lipase during the ...

    In my prediction I did not predict there will be a plateau as I thought that at such low concentration of bile salts the fat molecules would not be fully emulsified for there to be little difference in increasing the concentration.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work