TITLE
In biology usually you're given a title page, with a spot for your name, date and prac partner(s). If not, you should make a title page or put all this information as a header on the first page of your prac. On some pracs you may be required to make up a title. The title should tell you straight up what the prac is going to be about and not be too vague E.g a prac testing the effects of temperature on sucrase action on sucrose would be titled 'Effects of temperature on sucrase acting on sucrose' rather than something like 'Sucrase prac'
AIM
The aim is basically a summary of what you're going to try and test for. Sometimes you may be asked to write your own aim.
Eg sticking with the sucrase example the aim might be 'To test the effects of varying temperatures on the the enzyme sucrase and its activity on sucrose'
HYPOTHESIS
The hypothesis is not always included in a prac. If you are asked to write a hypothesis, its basically just asking you "What do you think will happen in this prac?" You should decide what you think will happen from the information on the topic that you will already know from class ie you should decide on a logical outcome. The hypothesis does not necessarily need to be what will happen as sometimes you won't know what will happen. The whole point of doing a prac is to test your hypothesis.
Eg for the sucrase prac, a hypothesis may be "As temperature increases, the rate that sucrase breaks down sucrose will increase, till sucrase is above its optimum temperature, which is predicted to be 50 degrees. After this point, the enzymes will denature and therefore the rate of activity will decrease."
MATERIALS AND PROCEDURE
If your doing a prac directly onto a worksheet you won't need to worry about this. But if you've done the prac on seperate sheets of paper you may be required to cut & paste the materials & procedure onto your sheet. This is only really if your teacher requests that you do so. Otherwise you can just put 'Refer to prac sheet'.
RESULTS
This can be a range of things depending on the prac. Usually results will require you to put your information in a table and possibly display it in other forms such as graphs or draw before and after diagrams. Make sure to include units of measurement (eg g, ml, ohms, ect.) in any recordings. Any diagrams should be drawn neatly and fairly large and be well labelled. Graphs should also be drawn fairly large, preferrably on graph paper. Make sure to give any graphs a title, label all axis (again make sure to include units) and most importantly graph neatly. Also if you put in a line of best fit don't assume that it will start at the origin (the point 0,0) and any part of the line that goes beyond your data should be drawn with a dotted line (to indicate its extrapolation and not data that you've tested for). Also label any outliers.
QUESTIONS
Any questions your teacher gives you with your prac should go after results and before the discussion/conclusion.
DISCUSSION/CONLUSION
This is where you summarise your results and point out wheither hypothesis was true. You need to explain why your results are what they are and point out anything that went wrong. *Also say what may have effected your results and what could have been done to make your results more accurate. This may be written in another part just before the conclusion, titled LIMITATIONS. Limitations DO NOT include human errors (things you've stuffed up), they include problems that occur due to lab equipment or certain other factors, for example an inaccurate weight balance or lack of time to allow for a reaction to occur.*
Example: By testing the rate at which solutions of sucrase(2%) broke down sucrose(5%) solutions at different temperatures, we were able to observe the effect that temperature will have on sucrase activity. As predicted, sucrase works most efficiently at 50 degrees C, while acting least effectively at 0 degrees C and 80 degrees C. This is because at 0 the enzyme sucrase becomes inhibited as it is too cold and at 80 it becomes denatured. Our results for the 40 degree sample was inaccurate, as the thermostat on the water bath was broken. For a more accurate results, we should have used pipettes to measure out exact amounts of sucrase and sucrose solution rather than using measuring cylinders. Also by testing at more temperatures we would have been able to better observe the effects temperature has on sucrase activity.