The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.

Photosynthesis is a process by which autotrophic organisms (green plants, algae and chlorophyll containing bacteria) utilize the energy from sunlight to synthesize their own food. It occur in the chloroplast of the cell.

chloroplasts

The first step in photosynthesis is the absorption of light by chlorophylls that are attached to the proteins in the thylakoids of chloroplasts. The light energy absorbed is then used to remove electrons from an electron donor like water, forming oxygen.

Terms in this set (7)

• Step 1-Light Dependent. CO2 and H2O enter the leaf.
• Step 2- Light Dependent. Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2.
• Step 3- Light Dependent. The electrons move down to enzymes.
• Step 4-Light Dependent.
• Step 5-Light independent.
• Step 6-Light independent.
• calvin cycle.

There are two main stages of photosynthesis: the light-dependent reactions and the Calvin cycle.

It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation).

The three major events that occur during the process of photosynthesis are: > Absorption of light energy by chlorophyll. > Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.

The main purpose of photosynthesis is to convert radiant energy from the sun into chemical energy that can be used for food. Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP.

Through photosynthesis, humans can again breathe in the oxygen that was produced and survive. In a way, they are a cycle — plants help humans breathe by providing us with oxygen, and humans help plants “breathe” by providing them with carbon dioxide.

Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.

It provides energy for nearly all ecosystems. By transforming light energy into chemical energy, photosynthesis provides the energy used by organisms, whether those organisms are plants, grasshoppers, wolves, or fungi.

Energy enters the ecosystem via sunlight as solar energy. Primary producers (a.k.a., the first trophic level) turn that solar energy into chemical energy via photosynthesis. The energy that has been stored in those organisms’ matter is transferred to that next trophic level. Some energy is lost as heat and as waste.

The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.

Plants provide us with food, fiber, shelter, medicine, and fuel. The basic food for all organisms is produced by green plants. In the process of food production, oxygen is released. This oxygen, which we obtain from the air we breathe, is essential to life.

Benefits of plants

• Lowers levels of anxiety. Constantly seeing and being around plants helps people feel more calm and relaxed, thus decreasing levels of anxiety.
• Increases attentiveness and memory.
• Increases productivity.
• Reduces stress levels and boosts mood.
• Sparks creativity.

Let us know some of the following uses of plants.

• Food: Plants are the main source of our food.
• Medicines: Many medicines are made from plants and these plants are called medicinal plants.
• Paper: Bamboo, eucalyptus, etc.
• Rubber: Some plants give us gum like acacia, etc.
• Wood: We get timber and fire- wood from trees.

Plants maintain the atmosphere. They produce oxygen and absorb carbon dioxide during photosynthesis. Plants provide many products for human use, such as firewood, timber, fibers, medicines, dyes, pesticides, oils, and rubber. Plants create habitats for many organisms.

Transpiration is the process by which water evaporates from plant pores, cooling the environment via evaporative cooling. Plants also stabilize the soil through their roots, which bind soils, and through their leaves, which keep raindrops from eroding soils.

Carbon Sequestration, Improved Air Quality. Trees sequester carbon from the atmosphere which improves air quality and helps to reduce our carbon footprint. Moreover, trees and landscaping help to absorb pollutants and particles in the air, improving overall air quality.

How do plants help the environment? The process by which the plants do this is a natural one; they release oxygen into the air as they take in carbon dioxide from the air, as well as filter out and eliminate some toxins.

Without plants, humans and animals will have less air to breathe. Through the process of photosynthesis, plants release oxygen back into the atmosphere. Green terrestrial plants make atmospheric oxygen which is essential for the survival of living organisms.

Plants form the critical base of food chains in nearly all ecosystems. Through photosynthesis, plants harvest the energy of the sun, providing both food and habitat for other organisms. In general, native plants support other native species more effectively than non-native plants.

As trees grow, they help stop climate change by removing carbon dioxide from the air, storing carbon in the trees and soil, and releasing oxygen into the atmosphere. Trees provide many benefits to us, every day.

10 Essential Ways Trees Help Our Planet

• Trees provide food. Papaya, mangoes, oranges, limes, lemons, peaches, coconuts, cashews, apples and more come from trees.
• Trees protect the land.
• Trees help us breathe.
• Trees provide shelter and shade.
• Trees are a natural playground.
• Trees encourage biodiversity.
• Trees provide sustainable wood.
• Trees conserve water.

Top 10 Benefits of Trees

• Clean Air. Researchers at the Davey Institute found that urban trees and forests are saving an average of one life every year per city because of the particulates that they remove from the air.
• Jobs.
• Clean Water.
• Carbon Sequestration.
• Reduced Crime.
• Increased Property Values.
• Mental Health.
• Temperature Control.

Ecological & Environmental Value. Trees contribute to their environment by providing oxygen, improving air quality, climate amelioration, conserving water, preserving soil, and supporting wildlife. During the process of photosynthesis, trees take in carbon dioxide and produce the oxygen we breathe.

Trees absorb carbon dioxide and other dangerous gases and, in turn, replenish the atmosphere with oxygen. Over 50 years, a tree generates $31,250 worth of oxygen, provides $62,000 worth of air pollution control, recycles $37,500 worth of water, and controls $31,250 worth of soil erosion.