• Attatched Document Results Temperature Yeast
    3,712 words
    Harry Fox 11 ST Biology Science 1 - Strand 1: Planning Aim In my experiment, my aim is to find out any correlation between rate of respiration of glucose by yeast and the mixtures temperature. I shall do this by conducting an experiment which will involve the timing of the yeast, water and glucose which has been mixed with a little methylene blue. I shall time how long it takes to revert to the original colour using a control. This shall be done at various temperatures. To obtain the best range ...
  • Enzymes Active Site
    1,030 words
    Enzymes The majority of the reactions that occur in living organisms are enzyme-controlled. Without them, the rate of the reactions would be so slow as to cause serious, if not fatal, damage. Without enzymes toxins would soon build up and the supply of respiratory substrate would decrease. Enzymes are proteins and thus have a specific shape. They are therefore specific in the reactions that they catalyse one enzyme will react with molecules of one substrate. The site of the reaction occurs in an...
  • Investigation Of Yeast Respiration
    1,607 words
    I will be investigating the respiration of yeast when adding more glucose. Variables: Temperature Amount of sugar solution. Amount of yeast. Concentration of sugar solution. Amount of shaking and acclimatization We are going to measure the amount of Co 2 given off from he yeast respiring as we add more sugar solution every 3 mins, recording the amount of Co 2 every minute. Temperature will affect the rate of yeast respiration. I shall keep the temperature of he mixture and water bath under cont...
  • Ortho Quinone Enzyme Rate Reaction
    1,092 words
    Introduction In this experiment, we intended to investigate the effect of the concentration of catechol oxidase on the reaction rate of catechol to ortho-quinone. Living things, to increase the speed of chemical reactions, use enzymes. Enzymes are a type of protein. Because of the fact that enzymes are proteins, they have certain shapes. These shapes create areas in which the substrate, the chemical that is broken down by the enzyme, can fit in and be broken down. The way that this reaction tak...