Lab Report Biology Essay

The purpose of this experiment was to see if the different amounts of fertilizer we applied to the algae would affect the growth rate. Also, we tested if fertilizer was even an impact in the growth rate of algae. Increasing the amount of the dependent variable (fertilizer) would affect the independent variable (growth of algae) negatively due to too much chemicals that are being applied to the independent variable. Which would kill the algae cells or at last damage them and either the algae would die or become weaker and won’t be able to grow as quickly as its normal rate. Stuti and I used 5 beakers, sharpie to label each beaker, 50mL (4) of distilled water, 1 grams of algae from a lake/small pond (put 0.2 grams of algae into each beaker),
Leave water out for a night so it will become distilled water with no chlorine. Clean an area of space you think is suitable, preferably lab tables. Take out 5 beakers. Take out an electric mass scale. Turn on electric mass scale (power button) and place a beaker on top of the scale. Make sure to only measure one beaker at a time. Wait till the digits on the screen slow down and stop at a number. The number it stopped at, that is the number you will right down in your lab book (that you will get out) as scrap notes. After you have measured each beaker make sure all the beakers are relatively close to each other. For example, 52.2 grams and 52.5 grams are okay, but 52.2 grams and 54.7 grams are not close enough. List of my beaker weights: 50.95, 50.85, 50.19, 50.85 and 50.81. Get your water you left out yesterday. Kneel down and make sure that you and the beaker are at eye level so the water measurement will be more precise. Pour distilled water into the beakers until the water hits the 50mL line. Then measure water that is in each beaker separately on scale. (Subtract the weight of the water and beaker together to get how much the water