Describe What a Photosystem Does for Photosynthesis
Although photosynthesis in these bacteria does not generate oxygen, ..
Re: What does Chlorophyll a do, comparred to chlorphyll b?
Ponds are among the richest and the most interesting natural environments to observe. Tomake a pond it is sufficient to have a garden or, a meadow or a wood near your home. It isnot necessary to be large, a square meter (9 square feet) of surface is sufficient, buttwo(18 sq. ft.) are better. Find a shady position in the garden. Dig a hole of about 2square meters, 50 cm(2 feet) deep. At least one side, the border has to gently slope downto allow to little animals to enter and leave, for hedgehogs and opossums to drink and tobirds to bath without being too deep. Put some sand in the bottom. Leave the grass on theside. Bare roots are okay. Waterproof the hole with a tarpaulin of white PVC. Why white?Because you can see aquatic animals better when they come near the shore. Cover the borderof the tarpaulin with the grass sod. Allow the tarpaulin to extend for at least 40 cm (16inches) beyond the sloping shore. In this position you can keep the water in such a way tocreate the typical conditions of a marsh. Fill up the pond with tap water and shovel somesand or soil in the bottom: they will benefit the aquatic plants. Go to a natural pond ormarsh and collect some aquatic plants. If it is possible, carry some gallons of water fromthe pond and pour them into your puddle, which will be enriched with microorganisms,algae, and animals, which live in ponds. In few days, your little pond will become greenwith algae and very rich of protozoa. Rapidly dragonflies will come to lay eggs, boatflies, coleoptera and aquatic spiders also will come. In the spring, frogs and newtswill come to lay eggs. The observation of the life in a pond is fascinating. You canremain for hours watching the organisms, which live in this ecosystem. Buy books torecognize the organisms that live in the ponds. See bibliography (5, 6). These texts willalso give you also useful information on the habits of these plants and animals. For anexercise, note your observations in a book, glue pictures, and sketch drawings. Everyyear, during the fall, you should clear out the pond. Shovel out the stinking mud, washthe tarpaulin, or changed it if it leaks, put some tap water, winter rain will supply theremaining part. In spite of what shopkeepers will tell you, your pond does not need pumpsto circulate water, nor aerators, nor falls, nor fountains, nor anything else. The pond isbetter to be as natural as possible. Little ponds of private gardens are very important toamphibians. Avoid introducing fish. They will eat the eggs of the amphibians and thetadpoles. Moreover, the newts will keep the pond free from the mosquito larvae. When thereare tadpoles, your pond will be visited by water snakes, with difficulty you will noticeof them!... and --- don't be frightened: they are harmless!
Multiple Microhabitat Pond Microcosm (good cross section of a pond)
A Large Pond
Building a Pond
"Pond" Cultures of Microscopic Invertebrates
Internet keywords: pond building homemade.
Different photosynthetic organisms use differentcombinations of pigments, which have differentcolors because they absorb and reflect differentfrequencies of light.
Plants and greenalgae (plants are really advanced green algae)contain chlorophyll a (which is teal-green),chlorophyll b (which is yellow-green), andbeta-carotene (which is yellow), thus giving thema green color. Brown algae and their unicellularrelatives (e.g. diatoms) have chlorophylla,chlorophyll c, and lipid pigments calledfucoxanthins,which together give them agolden-brown color. Red algae possess chlorophylla and lipid-based pigments called phycobilins,which give them the brilliant red(or deep blue)color. These different combinations of pigmentsare more or less efficient at collecting light atcertain frequencies and at certain levels of lightintensity (too much will damage the pigment).Thus, they parcel out the Sun's energy to make themost use of it and to not compete with otherphotosynthetic organisms.
What color of light does Chlorophyll B absorb well
Chlorophyll has the same elements, however they are organized around a single atom of magnesium.
By taking chlorophyll into our bodies, we elevate the integrity of haemoglobin in our blood and that translates into improved energy, circulation and oxygenation.
Chlorophyll contains vitamin, mineral and protein compounds and stands alone in its ability to stimulate the body on a cellular level.
Not only does chlorophyll increase heart function and aid the vascular system, intestines, uterus, and lungs, it also acts as a chelator of heavy metals and chemical toxins (grabs on to these molecules and carries them out of the body).
It will be very interesting to see how light will influence the rate of photosynthesis in plants and what will happen if they do not get the required light in order to produce starch .
What does “chlorophyll photosynthesis peak” mean in relation to ..
Contrary to what people think, lungs do not have muscles of their own, but they are dilated or compressed by means of the movements of chest and diaphragm. The device of figure 19 shows how a diaphragm causes air to enter and leave the lungs. In the phase A, the balloons have to be as empty as possible. If you are a teacher, ask to your pupils what would happen if there was a hole in the bottle. Then make a hole, so everybody will see that, even if the diaphragm is lowered, the lungs will not fill with air. Yet it is easy to close the hole and restore the functioning of the lungs. To prove this, seal the hole of the bottle with some sticking tape and move the diaphragm again. This simple experiment shows how a hole in the chest could be fatal. Also how you could save a person by simply plugging the hole. If you have difficulties in finding the Y tube to build the model of the lungs, just use a tube. You will only have one lung, but the principle is the same and you know that in reality there are two.
Do-It-Yourself Lung Model
Hydroponics is a method of growing plants without soil. Plants are simply placed in water with the necessary chemicals. As plants are deprived of support from the ground, they will fall down. To support the plants, an inert material like expanded clay pebbles is used in a pot in the tank (figure 5). Before inserting a plant in a hydroponic system, you must carefully remove all soil from the roots otherwise bacteria will putrefy them.
For many houseplants you can use tap water. Though, particularly for vegetables, it is advised to add appropriate nutrients. This cultivation method has the advantages of both requiring less frequent waterings and using very little water. With this system you can grow nearly any houseplant or vegetable. Hydroponics is useful also to show what nutrition plants need.
1 - Place some houseplants in hydroponics.
2 - Try hydroponics with vegetables and find the suitable nutrients.
Hydroponics in the Classroom
Growing plants without soil
To teach orphaned children how to grow their own food with hydroponics (gardening that uses very little water).
Organic Greenhouse Vegetable Production
Internet keywords: hydroponics classroom.
What role does chlorophyll play in photosynthesis …
What Are the Roles of Chlorophyll A & B? | Sciencing
13/12/2017 · What does chlorophyll do in photosynthesis
NOVA - Official Website | Illuminating Photosynthesis
Photosynthesis - Part I: The Sun and Light Not all of the light from the Sun makes it to the surface of the Earth
Pigments for Photosynthesis - HyperPhysics Concepts
01/01/2011 · Explore how photosynthesis works by helping the process along in this game.
Difference Between Chlorophyll A and B | Difference Between
I think this because the plant may use up all of the carbon dioxide (Sodium hydro carbonate) and the plant can have as much light as it needs but if it does not have any carbon dioxide it will not be able to photosynthesise....
LabBench Activity Plant Pigments and Photosynthesis
This was done by separating the photosynthetic pigments (chlorophyll a, chlorophyll b, carotene and xanthophylls) from one another using paper chromatography.
photosynthesis notes - Biology Junction
Variables: The variables that might affect the rate of photosynthesis in this experiment are: Temperature: When the temperature rises so does the rate of photosynthesis; this is because as the temperature around the plant rises the enzymes controlling photosynthesis inside the chloroplasts heat up and start moving around faster, the fast moving molecules collide with other fast moving enzymes causing them to react....
Every autumn we revel in the beauty of the fall colors
A lot of organisms emit light. Of course you know fireflies, but there are also otherluminescent organisms such as some fishes, mushrooms, bacteria, dinoflagellates, andshellfishes. The culture of luminescent bacteria is not difficult. What you have to do isto get a strain of luminescent and harmless bacteria and raise it in a suitable culturemedium. A bacterium widely cultured and used also for lessons in schools is the Photobacteriumphosphoreum, now renamed: Vibrio phosphoreum.
Search for information about the mechanism of the bioluminescence. You can findinformation for this culture and general information on the Internet at sites listedlater. There is a lot of information on bioluminescence on the Internet. There are evenamateur sites devoted to this topic. You can buy the Vibrio phosphoreum at commercially,such as the ATCC (American Type Culture Collection) .You can find other firms of this type on the Internet, using the keywords: culturecollection. Also try the links for the protists experiment. These companies also supplythe culture media and in their sites you can often read their composition.
: In these experiments, need thehelp of a biologist to avoid culturing dangerous microorganisms. Even with help, keep thecultures only for a short time, wash your hands, wash and disinfect all tools which havebeen in contact with the cultures.
Utilisation Pedagogique de Bacteries Luminescentes (in French)
Bioluminescence in Plankton and Nekton (there is a list of luminescent organisms)
Flash! Bacterial illumination
Isolation of Pure Cultures Of Bacteria (Please, read the safety warnings present inthis website)
Bioluminescence Web sites
Internet Keyword: luminous bacteria luminescent bioluminescence luciferin luciferase.
To find companies which sell strains of microorganisms use the keywords: culturecollection.
Are the insects which fly around lamps at night attracted by light or heat? To find out,use a clothing iron and an electric lamp. The electric lamp produces light with a littleheat, the iron produces only heat. Put both on a table. Keep them at least a meter (abouta yard) apart and with the emitting surfaces turned away from you. Note the differentbehavior of insects. Mask the lamp with plastic sheets of different colors and verify ifbugs are more attracted to a particular color. This is also a method to capture nighttimeinsects, particularly moths, so you can observe them with a lens or a stereoscopicmicroscope.
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