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

homeostasis and sports - experiments measuring the effects of exercise on the body

Extracts from this document...

Introduction

Aim To Investigate the effect of the game squash on the blood glucose level. Hypothesis - blood glucose level is usually affected by an activity or exertion such as a sport. Squash is a very exerting game and so a lot of glucose is required in providing energy while playing the game. The result is that the blood glucose shall fall. However homeostasis involves positive feedback and negative feedback. In this case , after a fall in the blood glucose level, positive feedback shall work to regulate the blood glucose level , by breaking down glycogen in the liver to glucose. Therefore the original glucose level shall be attained. However blood glucose level can also be influenced by the type of food that an individual has taken preceding the test.this then determines whether positive feedback or negative feedback shall occur Apparatus * A Glucometer kit * Squash rackets * Squash balls * Dettol * Cotton wool * Stopwatch Procedure 1. samples of blood of 2 volunteers were obtained using a sterilised lancets 2. The blood sample of an individual was then placed on the film that was provided by the glucometer kit 3. ...read more.

Middle

the less hydrated an individual is and as such more chloride is let out into the blood so as to retain water in the body. The less concentrated the urine of an individual is shows that less chloride is let out into the blood so that water is lost and not retained. This mechanism enables for the blood plasma concentration to be at a constant.varying amounts of water and salts are selectively eliminated by the kidney depending on their levels in the body. amount Chloride can therefore be detected in a urine sample. Apparatus * large test-tubes (with stoppers) *2 * labels * burette(25cm3) * pipette(2cm3) * Glass rod * pipette(10cm3) * Porcelain bowls*2 Chemicals * 50cm3 0.1M Silver nitrate * Methyl benzene * 50% v/v nitric acid * 50cm3 0.1M * potassium thiocyanate * Ammonium iron (iii) sulphate Procedure 1. 2 large test-tubes were labeled A and B. 2. Urine samples of specimen A and B were collected into the respective test-tubes. 3. Specimen A and B were let out to play basketball for an hour and a half. 4. Their urine samples were then collected after the game in two other large test-tubes. 5. ...read more.

Conclusion

Water retention and loss is regulated homeostatically by the body through the release of varying amounts of chloride ins into the urine, depending on the body's needs for water. Aim To investigate indirectly the carbon dioxide amount during swimming Hypothesis During swimming, carbon dioxide content increases while oxygen content reduces. This leads to an increase in the chest cavity and also the need for oxygen in the body and thus the panting. Chest cavity size therefore depends on the body's need for oxygen. Apparatus * Swimming pool * a tape measure * 2volunteers * a stopwatch Procedure 1. The chest size of 2 volunteers of nearly similar height was measured and the values recorded. 2. the 2 volunteers were made to swim for thirty minutes. 3. Immediately after swimming, their chest sizes were measured again. Data collection Volunteer Chest cavity size before swimming in cm + or -1cm Chest cavity size in cm after swimming +or - 1cm Dennis 82cm 87cm Shahbaz 84cm 90cm Analysis The chest cavity sizes of the two volunteers increased. This is because the volume of the lungs increased so that more oxygen could be absorbed within a larger surface area. Also so that more carbon dioxide could be expelled . ...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 Group 4 Projects 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 Group 4 Projects essays

  1. Group 4 Chemistry - Amylase

    This is because. For Part 2 of the experiment we also gained excellent results. The results gained concur with the prediction made and further validate the hypothesis. The greatest rate of reaction was that of test tube placed under a temperature of 37�C.

  2. Why is alcohol considered to be a serious problem? As many 33,000 people ...

    In 1920 the US passed a law forbidding the manufacture, import or export or sale of alcohol; however this ban was cancelled in 1933. Today, alcohol is a major industry which gains many millions of pounds in profits and contributing to the US economy (see pie chart below): In today's

  1. Statistics. This study was conducted to determine whether more than half of FSD ...

    Therefore, there is enough evidendence to infer that the more than half of FSD students want to use Open Library. 2. METHODOLOGY 2.1. Population and sample Population of interest is all students from Foundation Studies Department (FSD) and sample size is n = 100 2.2.

  2. HEAT TRANSFER IN SPORTS AIM: DETERMINING THE HEAT GIVEN OUT ...

    Maximum and minimum thermometer 3. 3 Clinical thermometers 4. 4 volunteers 5. Squash rackets and a ball 6. Table tennis bats 7. 15 school table PROCEDURE 1. Measurements of the room were taken 2. The initial room temperature was taken 3. The body temperature of the individual players was taken 4.

  1. Determine the presence of reducing sugar, protein and starch in the food products by ...

    as my biological knowledge, my hypothesis is following: The meal-plan for a day that we have made does contain all the nutrients that could have been tested for, therefore it is possible to say that the meal-plan was pretty successful; however due to the limitation of testing methods, some of

  2. Research Project. Social networks: How they influenced business and employment

    All the links between the nodes on the network are established by the nodes themselves by authenticating the other as a known person, other links are created when the nodes share common personal interests or opinions. The server here acts as the interface and therefore facilitates fast quick communication.

  1. Group 4 Journal. Our process was an industrial one called Aquaponics. Aquaponics is ...

    Submersible water pumps do not get damaged due to cavitation because they are usually deep beneath the surface of the water Bringing Water to the Surface 1. When the pressure switch comes on, an electrical current is sent down an electrical wire to the submersible water pump.

  2. Designing a series of modern fashion accessories design collection with the theme of combining ...

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.

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