Biology courses require writing lab reports. Writing a lab report may not be as easy as you think of. This is an lab report example about the process of osmosis, written for Biology course. This lab report may be a good kick start and a sample for your own lab report.
Biology Lab Report Research Question:
How does the amount of salt in a solution affects the rate of osmosis?
- 8 beakers.
- Distilled water
- Boardmarkers (For labeling)
- First get one or more potatoes and cut three pieces with same masses from these potatoe(es).
- Place the pieces of potatoes in 4 different beakers. Label the beakers as S0, S5, S10 and S15.
- Fill 4 beakers with 100ml of water and name these beakers.
- Take three different amounts of salt. 5 gram, 10 gram and 15 gram.
- Don’t put any salt in one beaker and put the different amounts of salts into the 3 beakers left. 5g to first one, 10g to the second one and 15g to the third time. Then, make solutions of these salts with water. After making the solutions, stir the solutions all the time and pour the solutions into the beakers containing potatoes.
- Pour the beaker containing no salt to S0, 5 grams salt to S5, 10 grams salt to S10 and 15 grams salt to S20.
- After comleting these steps. Record all the data and leave the beakers in laboratory for one day and after one day. Cover the beakers with gelatin.
- Record the masses of the potatoes after one day and make a comparison between them.
- After making the experiment, I waited for 1 and a half day and recorded the results of the experiment. While doing the experiment, I took three pieces of potatoes. The masses of potetoes were 3.98, 3.94, 3.96 and 3.94 from one to four respectively. But the results were a little bit unexpected. After one and a half day, The masses of potatoes were 4.40, 2.98, 3.02 and 3.32 respectively from the first potatoe to the fourth potatoe. The unexpected results may be caused by human errors made by me or it can be the result of a systematic error. I used salt but I think there can be sugar in the packet of the salt, mixed with salt. So the results are wrong. It’s the same amongst my friends, who did the same experiment with me.