This website uses cookies to ensure you have the best experience. Learn more

Laboratory Report On Oxygen Bubbling Experiment To Investigate Of The Effect Of Light Intensity On The Rate Of Photosynthesis

709 words - 3 pages

Biology
Laboratory report on oxygen bubbling experiment to investigate of the effect of light intensity on the rate of photosynthesis

Objective
To investigate the effect of light intensity on the rate of photosynthesis.

Principle of design and Assumptions
It is known that light is required in the photochemical stage of photosynthesis. Nonetheless, it is uncertain that if rate of photosynthesis is related to light intensity.
Since oxygen is the produced from the photolysis of water in light dependent stage of photosynthesis, the amount of oxygen released per unit time reflects the rate of photosynthesis.
In the experiment, light intensity is varied by changing the distance of a ...view middle of the document...

Wait for 5 minutes and record the final readings in pipette. Calculate the rate of photosynthesis and take 2 more readings.
7. Repeat steps 2 to 5 using different distance between the plant and the bench lamp (0.2m, 0.3m).
8. Plot a graph with volume of gas collected per unit time against light intensity.

Precautions
1. Cut surface of the plant should face upwards in the set up.
2. Check the thermometer at intervals of light intensity to ensure a constant temperature. Renew the water whenever there is change in temperature.
3. The lamp should not be placed too close to the plant to prevent the heating effect of light intensity.
4. The meniscus of the pipette should be read at horizontal level.

Results

|Distance |Light |Rate of photosynthesis (cm3/min) |
|(m) |intensity | |
| |(1/distance2) | |
| | |Reading 1 |Reading 2 |Average |
|0.1 |100 |0.028 |0.019 |0.023 |
|0.2 |25 |0.018 |0.01 |0.014 |
|0.3 |11 |0.007 ...

Other Essays Like Laboratory Report on Oxygen Bubbling Experiment to Investigate of the Effect of Light Intensity on the Rate of Photosynthesis

Effect of Concentration on the Rate of Reaction

671 words - 3 pages + 2SO42- (1b) It is important however to note that the NH4 and K ions are still in the solution, they are just unreactive. In order to measure the rate of the reaction, the conventional method would be to measure the species in question at certain times. However, this would be inconvenient, especially for a three hour laboratory period. Since the iodide ion can be oxidized by the persulphate ion, we can use sodium thiosulphate to be an

Light Intensity Of Incoherent Lights Essay

2381 words - 10 pages Abstract: To investigate whether light intensity of incoherent lights varies inversely with the square of the distance holds true in real-life situations and under laboratory conditions. Techniques utilised in the experiment included measuring the distance from the light source to the light sensor, recording the light intensity of a light source and recording observations with accuracy. The light from the light source that passes through the

Biology Laboratory Report - the Activity of Amylase

774 words - 4 pages Biology Laboratory Report - The Activity of Amylase Andreas Dobler, 3CO SWISS INTERNATIONAL SCHOOL SUPERVISOR: Lab Report: The Activity of Amylase Background The Food that we eat is digested as it passes through the alimentary canal. During this journey it is broken down and reassembled into a suitable form that the body tissue can use. It is than absorbed in the small intestine by finger like structures called “villi”. The molecules

The Effect Of Temperature On The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid

1841 words - 8 pages The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid I predict that as the temperature is increased the rate of reaction will increase. This means that the graph drawn up in my analysis will have positive link so it will look something like shown below, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased

The Effect Of Varying Heart Rate On Choice Reaction Time In Young, Physically Active Males

1025 words - 5 pages CRT in highly skilled fencing athletes, whilst having no effect on the sedentary population (Mouelhi Guizani, S. et al, 2006). Therefore, this experimental study is designed to determine the effects of varying heart rates upon CRT within a young, physically active male population. Purpose The aim of this experiment is to investigate the effect heart rate has on reaction time. The information that is obtained will be of interest to athletes

Effect of Interest Rate and Cash Reserve Ration on Inflation

2516 words - 11 pages research.. 5.Estimation And Result : The model comprises of three variables : inflation (INF), interest (INT) and cash reserve ratio (CRR) . INF = -7.625988 – 0.071858 INT + 3.080686 CRR + µ Adjusted R2 = .372187 According to the results generated interest rate and cash reserve ratio affect almost 37.2% on inflation. THE ORDINARY least square method is used to determine the effect of interest and CRR on the inflation. It showed by

Rate of Photosynthesis and How It Varies

851 words - 4 pages increased rate of photosynthesis due to the increased availability of photons of light. This light energy can then be transferred to chemical potential energy. The energy is then distributed around the plant and used for various reasons around it. The plant contains a lot of cellulose and it is needed in the plant cell walls and in the membranes. The osmotic pressure is kept up due to this rigid structure of the plants and so

Experiment on Rates of Reaction

780 words - 4 pages concentration of acid, the quicker the reaction is going to take place. Main Experiment: Aim: Our aim of this experiment was to investigate the effect of concentration on rates of reaction using different concentrations of sodium thiosulphate and hydrochloric acids. Prediction: I thought that the higher the concentration that we used, the test was going to be a lot quicker but the lower the concentration, the test

The Effect of Temperature on Air Pressure

1419 words - 6 pages because the pressure inside and outside were equal once again. 02/06/99- I conducted the experiment the egg and the bottle. OBSERVATIONS: After the paper was light on fire the egg was set on top of the opening. After about 10 seconds the hard-boiled egg appeared to get pulled in the Tropicana Twister bottle. The center of the egg started to rip slightly exposing the yolk. The flame from the paper went out when the egg was about

The Effect of Sarbanes-Oxley on Auditors

2666 words - 11 pages Journal of Finance and Accountancy The Effect of the Sarbanes-Oxley Act on Auditors’ Audit Performance Tae G. Ryu Metropolitan State College of Denver Barbara Uliss Metropolitan State College of Denver Chul-Young Roh East Tennessee State University ABSTRACT The issue of audit reporting for financially distressed firms continues to be of interest to the public and to legislators. Previous studies have consistently shown that auditors

The Effect of Videogames on Student Achievement

2785 words - 12 pages The Effect of Videogames on Student Achievement BY JONATHAN CRATON Introduction In the past few decades, interactive electronic media has grown from virtual non-existence to one of the primary means of entertainment for college students. In more recent years, the Internet has completely changed the landscape of electronic media from something individual and static into something with the potential to be interactive and social.  This article

Related Papers

An Investigation Into The Effect Of Light Intensity On The Rate Of Photosynthesis On A Piece Of Elodea

1997 words - 8 pages it then gets to a point where the chloroplasts are working as hard as they can, absorbing as much light as possible and even if the light intensity increases the rate of photosynthesis does not. This is also where the speed is limited by another factor. This graph shows the effect of light intensity on the rate of photosynthesis I have found that my prediction was wrong as the rate of photosynthesis actually

The Effect Of Light On Photosynthesis

1206 words - 5 pages have learnt that light does affect the rate of photosynthesis. The closer the light to the plant the more bubbles were produced which means that the rate of photosynthesis increased. I predicted that the further the light to the plant the less bubbles will be produced this is because as the intensity of light is increased more light can be trapped by chlorophyll to produced glucose and oxygen. In this experiment the

An Experiment To Investigate The Effect Of Changing The Concentration

1153 words - 5 pages An experiment to investigate the effect of changing the concentration of hydrochloric acid on the rate of reaction with sodium thiosulpahte. Aim I am trying to find out how the concentration of hydrochloric acid affects the reaction time with sodium thiosulpahte. If a clear solution of sodium thiosulphate is mixed with hydrochloric acid then a reaction will occur where a creamy-yellow precipitate of sulphur is produced. H20

Laboratory Report Investigating The Relationship Between The Effects Of The Exercise Intensity On The Skin Temperature And The Pulse In Humans

1457 words - 6 pages intensity of the exercise increases. This is rather coherent with my hypothesis.The pulse seems to be rising exponentially, but I predict that at the end of the graph is seems to be slowing down. This is logical because the pulse cannot keep on going on, it will hit the top, then it will maintain in that rate until the exercise stops. The exponential increase in the heart rate can also be explained by the increased workload as the Subject gets more