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

Testing the effect of water temperature on the respiration rate of goldfish

Extracts from this document...

Introduction

Background Information: 1. Goldfish are exothermic, meaning their body temperature depends on the water surrounding them. As the water cools/heats the first things to be affected are their digestion, respiration, and immune response. When a gold fish is exposed to extreme cold water, their body starts to shut down their non-vital organs first. They slow down their breathing because they don?t as much oxygen to bring to their working organs. As the water gets heated up, goldfish tend to become more active, and this is the time breeding is most correlated with. Hypothesis: 1. If you change the water temperature, then the amount of breaths the fish will take will adjust, because the fish won?t need as much oxygen to perform it?s bodily functions. ...read more.

Middle

3. Record the amount of times the fish opens it’s mouth in a period of 60 seconds. 4. Insert thermometer into the beaker, slowly add ice to the beaker until it reaches 3® C, count the number of times the fish opens it’s mouth within a 60 second time period. Record data. 5. Place the beaker on the hot plate and carefully raise the temperature to 6® C and count the breaths the fish takes, record the data. 6. Repeat step 5, raising the degree by 3® each time until you reach 30 ® C. After every 3® increase, count number of breaths for 60 seconds. ...read more.

Conclusion

As you heat the water back up the number of breaths taken increase/ stay the same as the initial because it has all of its organs working. Conclusion: 1. If you change the water temperature, then the amount of breaths the fish will take will adjust. My results do support my hypothesis. As all experiments have, there were a few errors. The number of breaths taken could fluctuate depending on how accurate the reading of the temperature was, and due to human error of not counting fast enough. If we were to do the experiment over again, I believe we should video tape the fish, that way you can slow down the video and get an accurate reading of how many times it opens its mouth. You could as make sure all the temperatures of the water were the exact same. ...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 temperature on the rate of respiration in yeast

    5 star(s)

    The pH of yeast suspension: this should also be kept constant because increasing of pH will start to break chemical bonds in molecules therefore this changes the shape of active site and no more substrate molecule will form enzyme substrate complex. This will result in a denaturation of enzymes.

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

    the standard deviation the higher the data are spread around the mean. As you see in the table above the standard deviation for 0% of bile salts, 0.54, is quite high compared to the others which means that the data collected from experiments using 0% bile salts was not very

  1. An investigation into the effects of temperature on the rate of anaerobic respiration of ...

    the substrates which were before able to react, are now unable to fit and hence the reaction slows down until it discontinuous. 35 �C and 50 �C are both slightly away from the optimum temperature for the enzyme to react; therefore means are also not significantly different.

  2. Investigate the effect of bile salt concentration on the digestion of milk by the ...

    100cm3 - As required to alkaline milk to pH 8.5. This alkaline solution is added to the milk to mimic the alkaline pH of the small intestine. It has a pH around 9 and so it is not very alkaline.

  1. Designing a data collection strategy The effect of temperature on the rate of ...

    When aerobic respiration is taking place decarboxylase and dehydrogenase are the catalysts (enzymes) used in the link reaction to remove carbon by creating carbon dioxide and reducing coenzymes NAD to reduced NAD. This occurs in the matrix of mitochondrion, the site of respiration in cells.

  2. Effect of Temperature on Rate of Hydrolysation of Pineapples

    This continues until a certain point around 40 degrees Celsius (optimum temperature) and then the increased temperature begins to denature the enzyme not allowing it to react as the active site structure becomes damaged and so the substrate is unable to bind.

  1. the Effect of Copper Ions on a

    If swallowed wash out mouth and give a glass or two of water, and then seek medical advice as soon as possible. If the solution gets into the eyes then flood the eye with gently running tap water for 10 minutes and seek medical attention.

  2. Investigating how prolonged exposure to its optimum temperature affects the respiration of yeast.

    However, yeast is a living organism, and if exposed to too high a temperature it may die. Therefore, at a certain temperature, it should be expected for the rate of respiration to decrease. One of the aims of the experiment, as a result, needs to be finding the optimum temperature

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