They contain chlorophyll a and carry out photosynthesis ..

The synthesis of chemical compounds using light, especially the manufacture of organic compounds (primarily carbohydrates) from carbon dioxide and a hydrogen source (such as water), most often with simultaneous liberation of oxygen, by chlorophyll- or bacteriochlorophyll-containing cells. The term photosynthesis is used almost exclusively to designate one particularly important natural process: the use of light in the manufacture of organic compounds (primarily certain carbohydrates) from inorganic materials by chlorophyll- or bacteriochlorophyll-containing cells (). This process requires a supply of energy in the form of light because its products contain much more chemical energy than its raw materials. This is clearly shown by the liberation of energy in the reverse process, namely the combustion of organic material with oxygen, which takes place during respiration. ; ; ; ;

This tutorial introduces mitochondria

Chloroplasts - containing chlorophyll and enzymes needed for reactions in photosynthesis.

BBC - GCSE Bitesize: Photosynthesis

Bircher called chlorophyll "concentrated sun power." He said, "It increases the functions of the head, affects the vascular system, the intestines, the uterus, and the lungs.

It raises basic nitrogen exchange and is therefore a tonic which, considering its stimulating properties, cannot be compared with any other."

The benefits of various green foods seem related to their chlorophyll content.

Science Experiments on Environmental Education and Biology

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).

In photosynthesis, what is the role of chloroplasts? - Quora

Making an aquarium or a terrarium is not a complicated thing. Learning to build them isvery useful for those who are fond of breeding animals, observing them, taking picturesand movies. You can use an aquarium to breed fish, amphibians, protists, algae, artemia,shrimps, etc. You can use a terrarium to breed many species of animals, but avoid raisingspecies which suffer in captivity. Aquaria and terrariums can be used also to take picturesof animals temporarily taken from their environment.
In their simpler form, acquaria and terrariums are simple glass boxes enclosed on 5 sidesand which can be provided with a lid. This simple container is suitable to breedamphibians and as a terrarium. Aquaria for fish require a compartment for a filter, a pumpfor water circulation, another pump for air, a thermostat, lighting, etc. We'll deal ofthe simplest aquaria.
How you can build an aquarium? In first you have to make a drawing. The bottom glass hasto be surrounded by the other four walls and it has to be the thickest. The thickness ofthe plates has to be proportioned to the size of the aquarium. Avoid building too wide,and more importantly, too high an aquarium. The pressure of the water increases and couldunglue the plates. After having drawn the acquarium you have to cut the glass plates bymeans of a glasscutter. To do this keep the glasscutter vertical and push down with forcewhile you move it along a ruler. This operation require practice, so use some scrap piecesuntil you have the necessary manual ability. It is important you use a sharp glasscutter,kept in oil to avoid rust. Before gluing the slabs, you have to round off the edges withsandpaper in order to remove their sharp edges. With some acetone, clean the slabs wherethe silicone rubber will be deposited. As the acetone is toxic, work outdoor or in a wellventilate piece. Use high quality transparent silicone. To keep the internal walls free ofexcessive glue, on the slabs and near the gluing positions, place stripes of sticking tape(figure 6). When the silicone is cured, remove these stripes and the excess glue.
: handling and cutting glass is a dangerousoperation which has to be made only by adult people wearing gloves and a heavy apron. Away to elegantly solve this problem is to order plates. A hardware or building supplystore can help. Never move aquaria and terrariums containing water or stones, move them onlywhen they are empty. Do not place aquaria in positions where a water leak could damagesomething below them, for example over electrical devices or sockets, and books. Onlyadults should handle glass-made aquaria or terrariums. Give children transparent plastictanks. Do not keep dangerous or rare organisms. Do not breed and most important, do notfree species which do not belong to your environment! Do not free sick animals or plants.
Building Tanks
Reef Aquarium Guide
CyberAqua (list of links)
Internet keywords: aquarium glass homemade.

In photosynthesis, what is the role of chloroplasts

The soil is composed of many different sized particles. With this simple experiment you can separate the main components of the soil and evaluate their proportions.
1 - Go into a field an collect a sample of soil. Put it in a jar of water. Stir it well and let it settle. Observe and describe the different layers of materials.
2 - In water, particles settle more quickly the bigger they are. It is possible to use this property to determine the amount of each component of the soil. Put 3 parts water and 1 part of soil in the container (try 1 cup soil and three cups of water in a quart jar); shake the container for 5 minutes and let the material set. With reference to the figure 1, after 40 seconds measure the thickness of sediment. Call this A; after 30 minutes measure again and call this B; after 24 hours measure C. Now, by subtraction, you can determine the thickness of the main layers: C-B = layer of clay, B-A = layer of silt, A = layer of gravel and sand. Using a sieve with 2 mm holes (less than 1/8 inches), you can separate the gravel from the sand and determine their ratio. On the basis of these data, calculate the content (%) of each component of the soil sample.
3 - Repeat the same experiment with soil collected in other places or that have a different geological origin (i.e: meadow, wood, river bank) or anyplace the soil has a different consistency or texture (i.e: muddy, sandy). Describe the composition of each soil and try to explain the differences. You can also apply this technique to evaluate the composition of the soil for a potted plant, and correct it. Example: if water doesn't drain well, would more sand help? If it needs to hold water longer would clay or organic matter be helpful?
4 - With a microscope, measure the size of the particles. With a clock, measure the time to drop to the bottom of a jar of water. time of the particles in water as a verses their size. Then graph with the Y-axis for the size of the particle and X-axis the time to fall.
Soil and Environment Activities
Soil description and classification
Internet keywords: soil sedimentation test.

Photosynthetic Organisms - Plants, Algae, Cyanobacteria

Best studied of all the vegetables is spinach which contains about 300-600 milligrams per ounce.

To understand how high in chlorophyll this amount turns out to be, compare the chlorophyll content of spinach to another of the World's Healthiest Foods - olives.

Chlorophyll is one of the primary pigments in olives, but olives contain only 30-300 micrograms per ounce (about 1/1000th as much as spinach).