Friday, July 30, 2010

Photosynthesis

This is a picture shows how photosynthesis is work.

1. What happen if there is no more photosynthesis?
If light was suddenly stop,photosynthesis would stop.Because the driving energy behind photosynthesis is chemical energy which is created directly from sunlight.Without photosynthesis there will be increasing of carbon dioxide and too much of carbon dioxide will leads to global warming.without photosynthesis Plants cannot make their own food so that they need oxygen to survive and there will be decreasing of oxygen,soon all living things in earth will come to the end.
2.Why is photosynthesis important to plants and animals?
The process of photosynthesis provides plants with the food and energy they need to sustain themselves.By using energy from sunlight the plant can make their own foods,which is a conversion of light energy to potential energy.Then the plants will release the potential energy to do necessary work.Photosynthesis is equally important to most animals because animals cannot produce their own foods,they are known as heterotrophs.Animals get foods energy directly or indirectly from the plants that photosynthesis.
3.How does the photosynthesis afftect the human?
Photosynthesis affects human because it gives us air and helps us breathe.if there were no photosynthesis plants wonldn't grow and that wonldn't only mess up our ecosystem we wonld all die because we have no air and then there wonld be no use for the sun.

Thursday, July 29, 2010

Photosynthesis And Respiration

1. Photosynthesis and respiration are opposite. As the plants photosynthesis they will take in carbon dioxide and give out oxygen , while other living things respire they will take in oxygen and give out carbon dioxide.

2.What is photosynthesis and where did it found?

Photosynthesis is the process used by plants to create energy from sunlight. Chlorophyll is the green pigment found in plants that is responsible for this conversion process. Photosynthesis converts light energy into chemical energy, and stores it in sugar. This process occurs in the chloroplasts, using chlorophyll. The chemical formula for the process requires six molecules of carbon dioxide and six molecules of water plus the energy from sunlight. This creates a sugar chain and six units of oxygen. Chlorophyll is green because the light required for photosynthesis is red and blue light. Leaving green light to be reflected back to our eyes. Photosynthesis occurs in the leaves of plants and there is still little in the stems. Plant leaves are made of upper and lower epidermises, mesophyll, veins and stomatas. Mesophyll is the layer of the plant that contains chloroplasts and is the only place photosynthesis occurs. The energy taken is stored as adenosine triphosphate. It is required for energy storage and is made of the nucleotide adenine with ribose sugar.

4.What is respiration?

In all living things, they rely on the process of respiration to stay alive. Respiration is the process of taking oxygen from the air and cycling it through the lungs, which then gives oxygen to bloog to be used in the body. The carbon dioxide waste is expelled out from the lungs. The respiration system allows liveing creatures that are not plants to obtain oxygen from the air for use in the blood and cells. Oxygen is much needed nutrient and living organisms can roughly only survive for minutes without it.

4.The different between photosynthesis and respiration?

The main difference between photosynthesis and respiratiis where is occurs, one being in plants and the other being in almost every other living things. The other difference is that plants require sunlight for the process to occur.where respriration does not.But there is an important mutual relationship between the two processes because of the ingredients required, and products produced. plants take carbon dioxide and expel oxygen, and almost other living things take in oxygen and expel carbon dioxide, the importance of both systems working in unison is obvious.

5.why is photosynthesis important?

The importance of Photosynthesis can be understood with respect to our breathing process. The breathing process keeps us alive and photosynthesis provides us oxygen to breathe in.