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INTERNATIONAL BACCALAUREATE ESSAYS
The effect of temperature on amylase activity
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Introduction The purpose of this experiment is to investigate if temperature will affect the amount of starch broken down as enzyme activity can change by different temperature. This is because as temperature rises the rate of chemical reactions increases due to the temperature increases the  rate of the molecules’ motion
Biology lab report seed germination
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Introduction This term, we embarked upon our first biology experiment. Recently, in class, we have been learning about plant reproduction
Investigating the relationship between cell size and rate of diffusion
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Aim: To plan and carry out an investigation to show the relationship between volume, surface area, and diffusion; and to demonstrate, using diffusion, why the size of cells is limited. Hypothesis: In this experiment, I expect to find that when the surface area to volume of a cell reaches a certain level, diffusion alone won’t be able to supply the cell materials needed, and as single -celled organisms take in and release substances by means of diffusion across the cell membrane, this process limits cell size
Biology internal assessment standard level osmosis
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i.            Aim To investigate the change in the mass of potato strips as a result of the process of osmosis in potato strips over varying periods of time
Experiment to investigate the effect of different antibiotics on the bacteria bacillus subtilis
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Aim: To see which antibiotic (Chloramphenicol, Erythromycin,  Fusidic  Acid,  Oxacillin, Novobiocin, Penicillin, Streptomyan and Tetracycline) reacting with the Bacillus subtilis has the largest zone of inhibition in mm (+/- 0.5mm) and so which has the biggest effect on the bacteria
Neurology and behaviour focus question is there an increase in the percept
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1.1      Defining the problem Focus question: Is there an increase in the perception and rating of disgust in females rather than males? Hypothesis: If disease related pictures are shown to a female participant they will rate it higher, in terms of disgust than the male participants
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