Thursday, July 29, 2010

GREEN MACHINE

Let me tell you what are the consequences of ceasing photosynthesis, so readers can understand the importance of it.
1) What happens if suddenly the process photosynthesis stops?

If photosynthesis stopped, the humans couldn't live in the Earth. If Photosynthesis stopped, the carbon dioxide happened more. Photosynthesis was happened by carbon dioxide, water and energy from the sun, but if photosynthesis was not reaction, the carbon dioxide spreads all of the world. Also the photosynthesis produces oxygen and glucose, the oxygen and glucose were important for human and plants. The glucose help to plants grow and when plants were grow, the oxygen was happened so human could breath and lived, but if there were not oxygen on the Earth human couldn't live. Also if plants were not grow and died, the ozone was also broken, and happened more greenhouse gases, the global warming was happened. So the sea level rises because the ice was melted and people will be died and could not live in the Earth.

2)What is photosynthesis?

Photosynthesis is a process that converts carbon dioxide into organic compounds, especially sugar, using the energy from sunlight.Photosynthesis is vital for life on earth. As well as maintaining the normal level of oxygen in the atmosphere, nearly all life either depends on it directly as a source of energy, or indirectly as the ultimate source of the energy in their food.Although photosynthesis can happen in different ways in different plants, some features are always the same.For example, the process always begins when energy from light is absorbed by the chloroplasts.After that, carbon dioxide is turn into organic compounds.

3) From our pespective
: These plants leaves are coloured and can photosynthesize.Otherwise they will not be able to grow at all

The purpose of Chlorophyll helps a plant to convert light energy into chemical energy in a process called photosynthesis. This reaction produces glucose that the plant uses to grow. Excess is then stored, which is why we can get energy from plants.They may not look green, but there’s actually chlorophyll in the leaves still. Otherwise, they will not be able to make food and will die. The colour you see actually comes from the green colour of chlorophyll and deep red or yellow colours from pigments of various chemicals like anthocyanins, carotenes and xanthophyll.

Questions you might ask.

Why bother to produce red pigments?

Well, these serve certain protective functions, such as from harmful UV rays anti-oxidant protection. These non-green pigments also assist photosynthesis. Some studies also predict that the red colour exuded by young leaves of some tropical trees warn animals from eating them. Upon maturity, these leaves rapidly turn green.These red pigments occur in varying amounts in all leaves. The more they are present, the more red the leaf appears. When seasons change from summer to fall, chlorophyll breaks down naturally so the red pigments appear more obvious.



Tuesday, July 27, 2010

Relationship between photosynthesis & respiration?

New imformation we have found out : this are the theories we have found.

1)Respiration and photosynthesis is just the exchange of gases.

(respiration)carbon dioxide + waterchlorophyll
→→→→→→→→
light energy
(glucose)+oxygen(photosynthesis)

2)They must both be the same

Putting our knowledge together we found out that Plants take in carbon dioxide and release oxygen in the day while the take in oxygen at night and release carbon dioxide. That process is called photosynthesis. However, if there are, if there are no plants, the carbon dioxide in the air may increase too much that it lead to much that it leads to Global warming and in the process melting the polar ice caps.Animal take in oxygen and give out carbon dioxide all the time. That process is called respiration. However on the other hand, if there is no animals to respire, the level of oxygen in the air might increase too much that it may cause oxygen toxicity and may cause fires too last longer as fires requires oxygen to burn.

3)Both of them are important to the survival of living things.

Mostly, all green plants go through photosynthesis because they need food. Respiration and Photosynthesis is the opposite. Green plants need CO2, sunlight and water to make food. We, humans cannot make our own food. But, green plants cannot make food when it is on the night time because there is no sunlight. During the day time, green plants go through photosynthesisas well as respiration. All livings things need oxygen for respiration to survive. The green plants take up only oxygen during night time. Both of them have their opposite cycles, like what i have written above photosynthesis takes up CO2 and gives out O2 while respiration takes in O2 and gives out CO2. So, whenever oxygen was taken by living things, it has been replaced by the green plants that gives out oxygen and taking in our CO2.

4) Humans making food?

Humans and animals cannot make their own food because we do not have chloroplast in our cells. The leaves of plants are green that is what gives them the greenish colour. Even if we do, our skin would change its color to green.

Some of the common questions people might ask.

Why is photosynthesis important?

Photosynthesis is vital for life on earth.The reason is as well as maintaining the normal level of oxygen in the atmosphere, nearly all life either depends on it directly as a source of energy, or indirectly as the ultimate source of the energy in their food.

Who is the one who discovered photosynthesis?And how did he do it?

Jan van helmont began the research of the process in the mid-1600s when he carefully measured the mass of the soil used by a plant and the mass of the plant as it grew. After noticing that the soil mass changed very little, he hypothesized that the mass of the growing plant must come from the water, the only substance he added to the potted plant. His hypothesis was partially accurate—much of the gained mass also comes from carbon dioxide as well as water. However, this was a signaling point to the idea that the bulk of a plant's biomass comes from the inputs of photosynthesis, not the soil itself.

What we have learned?

We have learned that the earth may look very huge and vast but at the same time vulnerable to damage. If we stop the two processes we have explained from occuring the impact on earth would be very devasting.

The difficulties we faced are finding the relevant information need for this blog entry.