A scientific study on a factor affecting the rate of photosynthesis.
All of these factors change the rate of photosynthesis and to be efficient in analysing how these limiting factors change the rate we will study one, leaving all other variables the same to make it a fair test.
Pigment.
How does the pigment of a leaf affect the rate of photosynthesis? .
Pigments vary in leaves the investigation comprises of testing if a certain pigment affects the rate of photosynthesis. This means that all other variables must remain the same throughout the experiment.
Pigments:.
• Purple.
• Red.
• Dark green.
• Light green.
To see if photosynthesis can occur you have to measure the amount of the reactants and products before and after the experiment.
6H20 + 6CO2 = C6H12O6 + 6O2.
The amount of CO2 at the beginning of the experiment compared to the end will tell us the amount that has being used for photosynthesis thus telling us the rate at which each leaf can photosynthesise. .
A way to test this is by using Bicarbonate solution; by leaving the solution in a area of CO2 with the solution being yellow the decrease of CO2 will show as the solution passes from yellow-orange -red-purple. The deeper the colour gets, the less CO2 is around the plant showing the amount that has being used for photosynthesis. .
Prediction.
I predict that the purple leaves will photosynthesise the fastest because it will absorb indigo and violet light waves. These colours have the shortest wavelengths, these means that they are scattered more than light with longer wavelengths and have a lot more energy (Gamma rays are very destructive and have very short wavelengths). This energy is transmitted through radiation to be used in photosynthesis thus the energy increases the rate of the reaction.
Method .
1. You will need the 4 coloured leaves, 2 spotlights, 4 test tubes, 4bungs, sellotape, 40ml-bicarbonate indicator (yellow) and a thread and needle.
Making an Inorganic pigment 1) (a) What is a pigment? (b) What is the difference between a dye and a pigment? Pigments are colour additives which are insoluble in the medium to which is added. ... As the pigment settled, there were crystals, which were leftover. ... Paints and pigments work in the same way. ...
This is directly affected by the different types of pigments available in chloroplasts. It is known that different types of pigments absorb certain wavelengths of light extremely well. ... When the pigments were separated enough visually, the paper was removed and dried. The pigment bands were snipped carefully off the main body of the chromatography paper and deposited into test tubes, where the pigments were washed of the chromatography paper with more solvent. ... The results proved that wavelength absorption, coupled with different types of pigment do indeed make a difference, making s...
Materials and Methods In this experiment, a carotene pigment solution was isolated from spinach pigment extract. This was done by separating the pigments of the spinach extract using paper chromatography. The carotene pigment line was cut into small pieces and soaked in 10 ml of acetone to draw the pigment out of the paper and create a carotene solution. ... The carotene pigments reflect the wavelengths that correspond to the colors orange and red. ... Carotene pigments were isolated using paper chromatography, and a solution of carotene pigments and acetone was made. ...
Introduction: Autotrophs, organisms that produce their own food, utilize certain pigments to carry out photosynthesis. ... Identify the pigments by their color and calculate their Rf values. ... Heavier pigments cannot travel up the paper as far, or as quickly as little ones. From my research, I noticed that I was suppose to get another pigment (Carotene) which is orange in color. ... The pigments were separated and were successfully able to rise. ...
80 degrees the rate of increase in absorbance and therefore concentration of the red pigment released from the beetroot, actually stops increasing. The explanation for this is that the concentration gradient of the red pigment from the inside of the cells in the beetroot, compared to the distilled water outside containing red pigment, has been dramatically lowered. This gradient is eventually cancelled out, with the same amount of red pigment in the cell, compared to the outside of the cell. The reprucusions of this, is a stop in increase of the red pigment released from the beetroot at these ...
Remove chlorophyll pigment from a spinach leaf 2. Separate the chlorophyll pigments from one another by using a technique called chromatography 3. ... Pigments could not be detected in the spinach leaf before the separation by chromatography. 0After the chromatography procedure was completed, different pigments were visible because there were several shades of yellow, blue and green. There were three visible chlorophyll pigments in the chromatogram. ... The chromatogram in class, contained blue, yellow and green pigments....
They are pigments or coloring substances that can be displayed on a surface. ... Oil paint, like all paint, consists of dry pigment, which is the heart of the color, and a binder. ... The oil makes the pigment fluid, and when it dries holds the pigment to the surface. ... As in oil paints, watercolors also contain pigment. ... They all contain some sort of pigment. ...
As some scientists were competing to make pigments that were cheaper than those made directly from stone, other scientists were attempting to make organic pigments. William Henry Perkin was the first scientists to chemically make organic pigments. ... This discovery of organic pigments led to a greater range of pigments, such as coal tar, alizarin crimson, and rose madder. Organic and inorganic were not the only oil pigments that existed. Scientist also discovered synthetic organic pigments that included quinacridone colors. ...
Another useful technique for the classification of mutants is through the biochemical separation of D. melanogaster's eye pigment. A mutation in any vital pigment produces eyes different than that of the wild-type fly, which possesses brick-red eyes. This natural color is the result of a mix of brown pigments known as ommochromes, and red pigments, or pteridines (Biochemical Separation of Eye Pigments, Bumbulis.) ... By obtaining pigment from flies of the unknown stock and transferring them onto treated paper, the pigments can be separated through the process of paper chromatography. ...
