Preview

compulsary essay

Satisfactory Essays
Open Document
Open Document
480 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
compulsary essay
Biology coursework

Hypothesis: I predict that the longer you are contracting the peg the slower you will become when doing so, this is because of muscle fatigue. And when taking two seconds between each contraction the speed will decrease at a much slower rate than if you are doing the contractions as fast as you can.
The science backing up my hypothesis: The higher the intensity of any type of exercise the more lactic acid is produced in a certain amount of time, this is by a means of anaerobic respiration. Glucose+ Oxygen = Carbon Dioxide+ Water.
Equipment: plastic or wooden pegs. – Because the exercise isn’t too strenuous on the body and it is a reliable way to showcase the toll of muscle fatigue.
Stopwatch. – To record the time it takes for the muscle to become unable to continue contracting the peg and to time the two second breaks in test two.
Method:
Check timer, metronome and clothes peg are in working condition.
Set the metronome to your chosen rate starting from 150 bmp, 140 bpm, 130 bpm, 120 bpm and 110 bpm. Your partner should count yourself in and then when the timer is started you have to start contracting the peg to the beat of the metronome pressing the peg down fully.
When you cannot make both sides of the peg touch stop the timer as your attempt is over.
Then swap over and let your partner contract the peg while you time.
Enter results into a graph.

Control variables: I will use the same peg due to the spring stiffness, I will record all results in the same unit of time (sec) and I will use the same stopwatch that is calibrated for recording seconds and the person doing the experiment so the muscle is the same that is being tested.
How I will keep certain things the same: I will ensure I am in the same room when I do the experiment and will complete the experiment over one lesson. I will use the same peg throughout the whole experiment unless the peg is broken which means the whole experiment will have to be repeated.

You May Also Find These Documents Helpful

  • Good Essays

    HNC Energy Systems

    • 1261 Words
    • 4 Pages

    Lactic Acid will be accumulated in the athlete’s muscles during a ‘high intensity’ part of the race. This will interfere with contractile proteins of the muscle which will cause fatigue. There are several ways in which Lactic Acid can be removed from the body during the onset of exercise. Two ways in which Lactic Acid can be removed are as follows:…

    • 1261 Words
    • 4 Pages
    Good Essays
  • Good Essays

    LABORATORY REPORT Activity 2 Twitch Contractions and Summation Name Instructor Date PREDICTIONS Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases, the force of contraction MATERIALS AND METHODS Measurement of Threshold Stimulus 1. Dependent Variable 2. Independent Variable 3. Controlled Variables Effect of Muscle Length on Contraction 1. Dependent Variable 2. Independent Variable 3. Controlled Variables Effect of Stimulation Frequency on Contraction 1. Dependent Variable 2. Independent Variable 3. Controlled Variables 4. What structure was stimulated to cause a muscle contraction 5. Explain why the temperature of the water bath was 35C (95 F). 6. At a stimulation frequency of 15 Hz how many stimuli were there per second RESULTS See Table 4 Measurement of Threshold Stimulus See Graph Effect of Stimulation Value on Twitch Contraction Force 1. What is the threshold stimulus 2. What is the maximum force generated at the threshold stimulus 3. How does increasing voltage above threshold stimulus affect force development See Table 5 Muscle Length and Contraction Force See Graph Effect of Muscle Fiber Length on Contraction Force 4. What was the force of contraction at a muscle length of 7.0 mm 5. What was the optimal muscle length (muscle length that generated the maximum force) 6. What was the maximum force generated at optimal length 7. How does increasing muscle fiber length affect force of muscle contraction See Table 6 Stimulation Frequency and Contraction Force See Graph Effect of Stimulation Frequency on Contraction Force 8. What was the force of contraction at a stimulation frequency of 22.5 9. At what frequency of stimulation was the maximum force generated 10. What was the maximum force generated in this experiment 11. How does increasing stimulation frequency affect force production DISCUSSION 1. Explain why muscle contraction…

    • 563 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period.…

    • 941 Words
    • 4 Pages
    Powerful Essays
  • Satisfactory Essays

    4.02 Monitoring the Heart

    • 484 Words
    • 2 Pages

    Take your pulse at the wrist, as described on the Work Out tab of 4.02, and record it below.…

    • 484 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Go to the ‘What’s Next?’ button on the bottom right of the screen. Click on the ‘Forces In Action’ button, at the bottom.…

    • 264 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Gcse Music Bix Movement

    • 1997 Words
    • 8 Pages

    _____1) Please check over the parts of this kit to make sure you received everything listed.…

    • 1997 Words
    • 8 Pages
    Good Essays
  • Good Essays

    Physio Lab

    • 914 Words
    • 4 Pages

    Every muscle has lactic acid.According to many people Lactic acid is nasty stuff produced in our muscles during exercise, cause soreness, muscle fatigue, does not contribute to exercise performance, muscle does not use it for fuel, and better athletes makes less of it. But they all are wrong or in other words they are a lay. Instead Lactate acid is made of Lactate ion called (Lactate) and Hydrogen Ion.…

    • 914 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    paper clip a short distance just below the bottom of the tube. If the paper clip touches the…

    • 948 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    How does resting or exercising affect the rate of clothespin squeezes we are able to do in a minute?…

    • 541 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Lab on Homeostasis

    • 988 Words
    • 4 Pages

    Take a control of the heart rate. So, the pulse taker will count the number of beats for 15 seconds and multiply by 4 to get the bpm.…

    • 988 Words
    • 4 Pages
    Good Essays
  • Better Essays

    We will use a stopwatch with a resolution of up to 0.001 seconds to ensure that the results are as precise as possible. We will also repeat our investigation three times using the same method and equipment to ensure that it is repeatable and we will compare our results with another group’s who have used the same method to see if our results are reproducible.…

    • 1087 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Chainsaw Research Paper

    • 816 Words
    • 4 Pages

    There are specific handling techniques that should be used to help minimize the risk of injury or getting strained muscles.…

    • 816 Words
    • 4 Pages
    Good Essays
  • Good Essays

    2.2.4 HUMAN BODY SYSTEMS

    • 633 Words
    • 3 Pages

    1. Compare the reaction times for voluntary vs. involuntary activation of the quadriceps muscle. What might account for the observed differences in reaction times? Outline what has to occur in the body for each reaction to occur. Refer to your drawing from Step 24. Information from the flow chart you created in Activity 2.2.1 might also be helpful.…

    • 633 Words
    • 3 Pages
    Good Essays
  • Good Essays

    clothespin

    • 552 Words
    • 3 Pages

    More subjects squeezed the pin more times resting first. The average of all the data shows this also. Looking at the graph it’s easier to see the results and compare them than the table. The table does not show a visual comparison but shows the data and numerical information. The…

    • 552 Words
    • 3 Pages
    Good Essays
  • Good Essays

    16. After prolonged activity, there’s an accumulation of lactic acid & depletion of ATP, ion…

    • 589 Words
    • 3 Pages
    Good Essays