Chlorophyll Extraction Science Fair Experiment by …
The process of photosynthesis is in green plants, algae and certain bacteria.
Photosynthesis and Respirat(1) | Photosynthesis | Chlorophyll
Drosophila, best known as vinegar fly or fruit fly, is the little fly you see flyingaround vinegar and on fruit during the fall. Why raise vinegar flies? To observe theirdevelopment, to observe the chromosomes of their salivary glands during division, toperform experiments on genetics, finally as food for amphibians that have just completedtheir metamorphosis. In this case it is necessary to breed a species that can't fly. Youcan obtain individuals with vestigial wings (wings which are not fully developed)at a university Biology or natural sciences department.
Culture medium recipe for drosophila: water 83 ml, agar-agar 0.8 g, sugar 5 g, brewer'syeast 10 g, alcohol 1.3 ml, nipagin
0.25 g. Nipagin M is used as a preservative in foods and cosmetics, like agar-agar, youcan buy it at the stores that sell science items for laboratories. Mix the yeast and thesugar, add agar-agar and water and simmer for 3 minutes. Turn off the heat. Dissolve thenipagin in alcohol and add to the rest when it has stopped smoking. Mix and let it set.
You can find other recipes at the following websites:
Aquick and simple introduction to Drosophila melanogaster
Fruit Flies - Drosophila melanogaster
Drosophila Culture (how to culture flightless fruit flies)
Observing the Development of Drosophila in Apple Juice Agar
Drosophila Genetics Lab I
A bibliography for an insect field biology course
La drosophile (in French)
Internet keywords: drosophila culture -cells, wingless fruit flies vinegar fly.
The plant responded to the different colored light as follows: The rate of photosynthesis was the most successful in white light, and more successful in red and blue lighting, than in green and yellow lighting systems.
Experiment to show that carbon dioxide is needed for photosynthesis.
Photosynthesis in plants and a few bacteria is responsible for feeding nearly all life on Earth. It allows energy from the sun to be converted into a storable form, usually glucose, which plants use to grow and thrive. Photosynthesis also generates the oxygen that animals need to survive. But here we animals repay the favor. We exhale the carbon dioxide that plants need for photosynthesis. Here, take a closer look at the oxygen/carbon dioxide cycle and the process of photosynthesis.
In this exercise, students at different tables varied the intensity of light responsible for photosynthesis in the spinach disks by varying the wattage of the bulbs. Recall that these disks were submerged in a sodium bicarbonate solution and subjected to a vacuum. This resulted in the utilization of carbon from the sodium bicarbonate as their primary source of carbon for photosynthesis (as opposed to carbon dioxide). The reasoning behind this is that the sunken disks in solution will produce oxygen as a product of photosynthesis and float to the surface. We should be able to count the number of disks as a representation of the rate of photosynthesis occurring in each experimental setup.
How Photosynthesis Works - Science for Kids
If white light is a mixture of several wavelengths of colors and the chlorophyll in green leaves absorb energies from all visible light except green, then exposing white light to a green plants will result in the fastest rate of photosynthesis, followed by blue or red.
Green or yellow light will have the slowest rates of photosynthesis because they are reflected by the pigments in the plant.
DESCRIPTION & ANALYSIS
SOURCES OF ERROR AND IMPROVEMENTS
In this lab experiment, the team examines how the rate of photosynthesis is affected by different light colors in the leafs.
Hypothesis For Photosynthesis Free Essays - StudyMode
Photosynthesis - definition of photosynthesis by The …
Photosynthesis science fair projects and experiments: topics, ideas, resources, and sample projects.
sunlight is absorbed by chlorophyll in a leaf B
the chlorophyll cannot and transferring that energy to the chlorophyll enabling photosynthesis to ..
carbon dioxide is taken in from the air C
Photosynthesis The aim of this experiment is to investigate the factors affecting photosynthesis in Elodea.
water is transported from the roots D
Record or report findings.
Rate of photosynthesis (measured by ET50, time it took for 50% of the leaf disks to float up)
Color of light (wavelength of light)
Light intensity, temperature, bicarbonate concentration (0.2%), depth of bicarbonate solution, direction of incoming light, pH, amount of soap, size of leaf disk, type of plant
Ten trials for each color, however for each trial, a few disks did not float up.
LabBench Activity Plant Pigments and Photosynthesis
Yellow came after with 1mm, followed by green, which produced no measurable amount of oxygen.
I got these results because one molecule affected most by photosynthesis, chlorophyll, produces the most oxygen under blue and red light, while reflecting green light.
NOVA - Official Website | Illuminating Photosynthesis
This lab might find that plants are more efficient under a different hue of light.
If I change the hue of light from white to blue, red, yellow or green, then I think the plant under the white light will produce the most oxygen, because it is the most like sunlight and it contains all visible colors.
I think blue and red will produce the most oxygen after the white light because chlorophyll absorbs blue and red light the most effectively.
I think the plant under the green light will produce the least amount of oxygen because given the fact that cabomba is green, it will reflect the green light.
In this lab I want to see the effects of plants under different colored lights.
Science Experiments on Environmental Education and Biology
In addition, a trial with no light would show the effect of light versus no light in the plant’s production of photosynthesis.
Other variables that we could tweak are concentration of bicarbonate and type of plant.
Comparing experimental results
By: Emily, David, Michael
ANALYSIS OF THE SOIL COMPOSITION
Our results show that different color lights definitely does have a strong direct correlation with the rate of photosynthesis/growth of a plant.
LIGHT ABSORPTION IN PHOTOSYNTHESIS
Absorption spectra showing how the different side chains in chlorophyll a and chlorophyll b result in slightly different absorptions of visible light.
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