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

Bio Lab Design

Extracts from this document...

Introduction

Question How does the pace of a run affect the breathing rate per minute after a two minute run? Problem statement The purpose of this lab is to decipher if a runner's breathing rate will increase, decrease, or remain the same according to the pace the runner sets. The independent variable is the pace; the runner will run at 12 minutes per mile, 10 minutes per mile then 8 minutes per mile. The dependent variable is how many times the runner breathes per minute directly after the run. The constants of this experiment are the subject, the environment and the length of time running. In order to keep these variables constant, the subject will run on a treadmill. This will keep the three different paces constant along with the amount of time running and the surface of the area being run on will not change. Also the treadmill is indoors with the air temperature staying at a consistent level. ...read more.

Middle

Procedure 1. Begin the process by measuring the breathing rate of the subject at rest. 2. To do this, count the number of times the subject exhales per minute for a total of three minutes. 3. Record each measurement per minute. 4. Set the treadmill to move at the pace of 12 minutes per mile. 5. Start the timer at two minutes once the subject begins running. 6. Once the two minutes of running is completed, stop the treadmill and immediately start counting the number of times the subject exhales per minute for a total of three minutes. 7. Record these three measurements. 8. After the three minutes of measuring the subject's breathing rate are over, allow the subject to rest for five minutes or until the breathing rate is at the same rate as the initial resting rate. 9. Once the subject's breathing rate is back to the rate it was at rest, repeat steps 4-8 for two more trials. ...read more.

Conclusion

18. Once the two minutes of running is completed, stop the treadmill and immediately start counting the number of times the subject exhales per minute for a total of three minutes. 19. Record these three measurements. 20. After the three minutes of measuring the subject's breathing rate are over, allow the subject to rest for five minutes or until the breathing rate is at the same rate as the initial resting rate. 21. Once the subject's breathing rate is back to the rate it was at rest, repeat steps 4-8 for two more trials. 22. Record all the measurements collected. 23. Then for the 12 minute mile pace, find the average of all the measurements taken after the first minute of all three trials, then do the same for the measurements collected after the second minute, then do the same for the third minute. 24. Repeat these calculations for the 10 minute and 8 minute mile pace. 25. Then use these averages to compare to the initial breathing rate to see how it changed, if it did, due to the increase of the speed of the run. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. Plant Tropism Lab

    This proves that bean plants grow against gravity, even when external forces suddenly change the orientation of the plants, they still grow upright. However, the data's standard deviation is too high to make a valid conclusion. On Charts 3.1 - 3.5, one can see that the standard deviation of each

  2. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    This means that germinating seeds consumer more oxygen than the non-germinating seeds in both room temperature and ice water. The reason why germinating seeds consumes more oxygen is that they process faster cellular respiration. The faster cellular respiration occurs, the more oxygen it consumes.

  1. Ecology Open Investigation Does the geographic location affect the biotic and abiotic ...

    Rating Categories Sensitivity Score Taxa Richness S > 4.5 3.5 < S < 4.5 S < 3.5 x > 9 Good Moderate Moderate 3 < x < 9 Moderate Moderate Poor x < 3 Moderate Poor Poor Note: - Good - Many taxa (high diversity), sensitive taxa present.

  2. Biology Industrial Melanism of Peppered Moth Lab

    + (5-1)(53.3))/((5+5-2)(1/5 + 1/5)) = 36.7 V( (280.2+213.2)/(8)(2/5) = 36.7 V(493.4)/(16/5) = 36.7 V( 154.2) =36.7 12.4 t value= 2.96 Presentation Graph 1. Comparing the percentage of melanic and light-coloured moth population remained after 5 trials/generation of a predator's hunting on light-coloured tree bark.

  1. Osmosis Lab

    For the second set of results, place 25 grams of salt that you have measured on the electric scale into the beaker. Place the same amounts of salt into each beaker. Increase the amount of salt by 25 grams for each set of results.

  2. Enzyme Lab

    The time was very important in our experiment, as the reactions that occurred happened fairly quickly, and an inaccurate reading of time may have made big changes in our results. We kept the 2-minute rule by using a stopwatch. Volume The volume and amount water/ H2O2 used in our experiment was always held at a constant amount.

  1. Simpson Diversity Lab

    10�2 + 12�2 +10�2 + 13�2 + 4�1 + 16�2 + 11�1 + 10�1 + 13�1 + 17�2 = 116 � 16 - Plantain = 6�1 + 8�2 + 2�1 + 22�2 + 19�2 + 35�3 + 16�1 = 108 � 12 - Unknown = 4�1 + 8�1 + 3�1

  2. Experimental Design Notes

    Observation and analysis of data o Conclusions through inductive reasoning using observation o Ex. Jane Goodall and chimpanzee behavior * Hypothesis Based o Potential answer to a well framed question o Educated guess based on experiment and data available from previous experiments and discovery science * Theory: a hypothesis that

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