Photosynthesis

In order for photosynthesis to occur, the organelle chloroplast is needed. Eukaryotic cells (typically plants) do contain chloroplasts which the plant can use to make food.

However, there are several prokaryotic organisms such as the purple bacteria that contains a different kind of chlorophyll and can photosynthesize.

In simple terms, photosynthesis is the conversion of carbon dioxide (CO2) to carbohydrate (CH2O). To do this two things are needed: energy to drive the reaction and a source of hydrogen.

The light reaction of photosynthesis produces two essential substances: ATP and NADPH. ATP provides the energy for the conversion of CO2 to CH2O, and NADPH provides the hydrogen.

The light reaction depends on groups of chlorophyll molecules, called photosystems, absorbing light energy. The energy is used to eject high energy electrons from the chlorophyll. The energy in the electrons is then used to make ATP and NADPH.

There are two photosystems, called photosystem I (PSI) and photosystem II (PSII), which work in sequence. (PSII comes before PSI in the sequence, but they were discovered and named in the reverse order!).

PSII absorbs light and emits a high energy electron. The energetic electron then passes down a series of molecules, called an electron transport chain (ETC), releasing energy as it goes (you can visualise it as a ball bouncing down a set of stairs, losing energy as it falls). The energy released is used to make the energy carrier compound ATP.

To replace the electrons lost from chlorophyll in PSII water (H2O) is split into hydrogen ions (H+), electrons (e-) and oxygen atoms (O):

H2O = 2H+ + 2e- + O

This is the source of the oxygen released by photosynthesis.

The second photosystem, PSI, also absorbs light and emits a high energy electron from chlorophyll. The energy in this electron is used to drive the synthesis of NADPH from NADP+ ,hydrogen ions (H+) and electrons (e-):

NADP+ + 2H+ + 2e- = NADPH + H+

The hydrogen ions needed for this come from the water which was split by PSII.

The electrons lost from the chlorophyll in PSI are replaced by the electrons ejected from PSII.

The result of all this is that light energy is converted into chemical energy in ATP, water is split to provide the hydrogen needed to make NADPH, and oxygen is released as a waste product.

The ATP and NADPH are then used in the light independent reaction (the Calvin cycle) to concert carbon dioxide into carbohydrate.

The splitting of water into H+ and OH- is called hydrolysis and occurs in a huge array of biochemical reactions.

Water is broken down just about as often as it is resembled, call these processes a 'lubricant for chemical reactions'.

Through photosynthesis, plants convert carbon dioxide and water into glucose (a simple sugar) and oxygen. This process uses light energy to produce food for the plant and release oxygen as a byproduct.

During photosynthesis, energy from the sun is trapped and converted into chemical energy in the form of glucose molecules. This process occurs in the chloroplasts of plant cells, where chlorophyll, a pigment that absorbs sunlight, plays a key role in capturing and converting solar energy.

Plants don't really absorb energy, but they do use the energy of the sun's light to convert water and carbon dioxide into glucose, which is a form of chemical energy. So yes, the sun's energy does enable plants to grow, but it isn't just absorbed in the same form.

They perform photosynthesis because plants need photosynthesis to grow and develop . All living organisms need energy to live and photosynthesis uses sunlight energy to make natural food for plants .

you need water,carbon,chorophyll, and sunlight for a photosynthesis

The first reaction of glycolysis, where glucose is phosphorylated (a phosphate group is added) to give glucose - 6 - phosphate requires ATP. This reaction is catalyzed by the enzyme hexokinase

The pigment directly involved is the green pigment called 'chlorophyll' and is found in the chloroplats.

While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.

The part of the open ocean that receives enough light for floating algae to carry out photosynthesis is called the euphotic zone or photic zone. This is the upper layer of the ocean where sunlight penetrates and supports photosynthetic activities of algae and other marine plants.

Oxygen is released into the atmosphere during the light-dependent reaction phase of photosynthesis. This process occurs in the thylakoid membranes of chloroplasts when water is split, releasing oxygen as a byproduct.

The correct spelling is 'photosynthesis'.

There are three carbon dioxide, water, and sunlight.

Photosynthesis requires carbon dioxide as one of its essential inputs. Without carbon dioxide, plants would not be able to carry out the process of photosynthesis, resulting in a severe reduction in their ability to produce energy and oxygen. This would disrupt the entire ecosystem as plants are primary producers supporting the food chain.

No, they were not Toxic was actually poinsonous to the Anaerobic photoautotrophs. However cyanobacteria (a.k.a pondscum) is believed to be the first bacteria to give off oxygen as a by-product of photosynthetic processes.

The rate of photosynthesis in relation to temperature forms a bell curve.

At low temperatures the enzymes responsibility for photosynthesis have very little energy so the rate of photosynthesis is very slow. If it is cold enough for water to freeze it can be very harmful to a plant.

As the temperature increases, the enzymes get more energy so the rate of photosynthesis increases.

If it gets too hot the enzymes begin to lose their shape (denature). This means they are unable to function properly and the rate of photosynthesis decreases again. Also, at higher temperatures the stomata close to prevent water loss. This also stops gas exchange which slows photosynthesis even further. If it is hot enough for water to boil this can be very harmful.

The chloroplast is responsible for capturing light energy and converting it into chemical energy through the process of photosynthesis. It contains chlorophyll, the pigment that absorbs light, and the necessary enzymes to carry out the photosynthetic reactions.

Spiritually, photosynthesis can be seen as a metaphor for transformation and growth. Just as plants convert sunlight into energy to fuel their growth, spiritually, photosynthesis can represent the process of harnessing positive energy or experiences to nourish the soul and encourage personal development and enlightenment.

They are called footlights. They are used to provide a part of the illumination and to soften the heavy shadows made from overhead lighting.

they are set at floor level, that's how they get the name 'footlights'.

Hope this helped :)

The product of photosynthesis needed by both plants and other organisms for cellular respiration is glucose. Glucose is a sugar molecule that serves as a source of energy for living organisms. It is produced during photosynthesis in the chloroplasts of plant cells.

The flat green organ adapted to collect as much light as possible to make food for the plant is called a leaf. Leaves contain chlorophyll, a pigment that absorbs sunlight for photosynthesis, allowing the plant to convert the light energy into chemical energy in the form of sugars.

If the temperature of the glow stick (chemiluminescence) is warmer, it releases a brighter glow and has a shorter reaction time. If the temperature of the glow stick is colder, it releases a dimmer glow but has a longer reaction time.

Lower temperatures slow reaction rates and release less light intensity then higher temperatures.