Photosynthesis

Chlorophyll is a pigment in plants that absorbs light energy for photosynthesis. It is responsible for capturing sunlight and converting it into chemical energy used to produce glucose from carbon dioxide and water. In this process, chlorophyll plays a critical role in enabling plants to make their own food.

Early photosynthetic autotrophs, such as cyanobacteria, played a crucial role in the rise of aerobic life forms by producing oxygen as a byproduct of photosynthesis. This oxygen eventually accumulated in the atmosphere, leading to the development of aerobic respiration in organisms, which enabled more efficient energy production. This shift towards aerobic metabolism allowed for the diversification and expansion of life forms on Earth.

The three required components are:

Reactants : carbon dioxide and water'

Catalyst : chlorophyll

Energy Source: sunlight

When the reactants are acted upon in the chloroplast of a leaf, the energy from sunlight is stored as molecular bonds in hydrocarbon (carbohydrate) molecules, and free oxygen is released.

The reactions of photosynthesis that do not require sunlight are the Calvin cycle (light-independent reactions). In this cycle, carbon dioxide is converted into glucose using ATP and NADPH generated during the light-dependent reactions. This process occurs in the stroma of the chloroplast.

nope. only in the chloroplast. in that there are two cycles, the light reaction and the Calvin cycle

Light reaction

light is taken in the plant

water from the roots is broken down

oxygen is released from the plant leaves

ATP and NADPH (a high energy electron carrier) is produced (carries hydrogen)

Calvin Cycle

CO2 is taken in

ATP is used as energy

NADPH is used to lower ativiation energy

(after the calvin cycle, NADPH become NADP+)

With the help of the enzyme RuBisCo this reaction takes place.

CO2 + ribulose biphosphate ( a 5 C sugar ) -> 2(3-phosphoglycerate)( 3 C sugar)

This happens in the Calvin cycle. With CO2 and RuBP a reaction takes place with ATP and NADPH to do a complicated bit of arranging with the three CO2's coming into the cycle. Six of the 3-phosphogylcerates are made, but only one the product of one cycle and the rest go back into the cycle. The 3 carbon sugar then can be used to build glucose or used in the mitochondria for energy.

Van Helmont conducted research related to plant nutrition and growth, particularly his famous willow tree experiment where he observed the uptake of water by plants. He is also known for his contributions to the idea of spontaneous generation and for coining the term "gas" in the context of chemical reactions.

6CO2 + 6H2O ->(+ photons of light ) -> C6H12O6 + 6O2

This equation says, carbon dioxide gas plus water ( + light ) equals glucose, a sugar, and oxygen gas.

So, yes, photosynthesis, the equation above, produces sugar.

That is correct. Photosynthesis is the process by which plants and other organisms convert sunlight into energy and produce oxygen as a byproduct. This oxygen is then released into the atmosphere, where it can be used by other organisms for respiration.

1. Photosynthesis is important because oxygen is released as a byproduct. We need that oxygen to survive.

2. Photosynthesis helps get rid of the carbon dioxide in the air. Carbon dioxide, as you may probably know, is necessary for this process to occur.

The majority of the water is used to make a sugary food called glucose, that is used to feed the plant. The excess glucose is stored in the roots of the plant to provide the plant with nutrients in the spring. The excess water evaporates from small pores within the leaf. That is why greenhouses are often foggy.

The small amount of excess carbon dioxide is stored within the plant and is released when the plant dies and decomposes.

The equation for photosynthesis is: 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O

This could be simplified to (and is usually seen as): 6CO2 + 6H2O → C6H12O6 + 6O2.

From the equations above, it could be seen that sunlight is not a reactant in photosynthesis. Reactants are substances that takes part in and undergoes change during a reaction. Sunlight does not; hence sunlight is not a reactant in photosynthesis.

Plants require nitrates for use with sugar to produce protein. Both nitrates and phosphates are used to create DNA, especially phosphate as it makes up the 'backbone' of the DNA. Phosphate is also needed to create ATP, or usable energy.

In C3 plants, photosynthesis occurs throughout the leaf, while in C4 plants, photosynthesis occurs in the inner cells. The photosynthesis in C3 plants is more efficient compared to the one in C4 plants.

The coconut seeds have fibrous outer covering in order to help them float in water for dispersal. Whereas the tiger's nail seed has hooks/spines which help them cling to animals for dispersion.

Reference: See Related Link

Plants..There the only living thing that make there own food and they use the suns energy to make their own food which provides us and animals with oxygen that we breath in and food that we eat ..eg fruits...

answerd by: romaine.w

There is no role of oxygen in photosynthesis. Oxygen is used as the terminal electron acceptor during respiration. Oxygen is the by-product of a water molecule breaking down in the very beginning of photosynthesis to supply photosystem II with electrons.

Aristotle was a Greek scientist who thought that plants ate soil and sucked it up through their roots. Most people believed this until the 17th century. In the 17th century, a scientist called Jan van Helmont tested Aristotle's theory. He measured the masses of a small tree and some soil in a pot. He planted the tree and watered it for 5 years In van Helmont's experiment the mass of the soil did not go down much (0.06kgs/ 0.132lbs) but the mass of the tree went up a lot (74.47kg/163.834lbs). This showed that Aristotle's theory was wrong. Van Helmont suggested that the tree got all of its food from water. In 1782, Jean Senebier showed that plants need carbon dioxide gas from the air and suggested that plants only use this gas to make food. In 1804, Nicholas de Saussure did van Helmont's experiment again, but he carefully measured the amounts of carbon dioxide and water he gave to the plant. He showed that both carbon dioxide and water are needed.

it is only needed for photosynthesis as we humans do not get our energy from light ( think about it we still breath when it is dark don't we)

Carbon dioxide serves as the source of carbon atoms that are fixed during the Calvin cycle of photosynthesis. These carbon atoms are used to build sugars and other organic molecules essential for plant growth and metabolism. Without carbon dioxide, plants would not be able to produce these vital compounds through photosynthesis.

During photosynthesis, carbon dioxide and water are converted into glucose and oxygen in the presence of sunlight and chlorophyll. The overall process can be summarized as: carbon dioxide and water react to form glucose and oxygen with the help of light energy.

The chemical energy made by photosynthesis is in the form of glucose, a simple sugar molecule. This glucose can then be used by plants as a source of energy for growth and maintenance or stored for later use.

The tissue system responsible for photosynthesis in the plant body is the mesophyll tissue, located in the leaves. This tissue contains chloroplasts, where photosynthesis occurs, converting light energy into chemical energy that the plant can use for growth and development.