Photosythesis respiration cycle

Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen. The most common cause of this event is lack of oxygen Certain species of these phytoplankton can contain harmful toxins that can affect humans and other animals.

Algal blooms and overproduction of phytoplankton can cause toxic red tides and fish kills. Both "active" forms of chlorophyll a function in photosynthesis due to their association with proteins in the thylakoid membrane.

Both chlorophylls also absorb in the orange-red end of the spectrum with longer wavelengths and lower energy. Also in marine environments, carbon-containing matter such as calcium carbonate is incorporated into the shells and other hard parts of aquatic organisms.

Moreover, 1 molecule of ATP is formed in a process of substrate phosphorylation Taiz et al, The use of H2O introduced free oxygen O2 into the environment as a byproduct.

The energy may be emitted immediately as a longer wavelength, a phenomenon known as fluorescence. The resulting potential difference on both sides of the inner mitochondrial membrane is used to synthesize ATP oxidative phosphorylation.

When these organisms die, the carbon-rich hard parts sink to the ocean bed. Describe the role that chlorophylls and the other pigments found in chloroplasts play to initiate the light-dependent reactions.

This led to the fact that eukaryotes have come to dominate the world. Absorption and transmission of different wavelengths of light by a hypothetical pigment.


Consequently, 2 molecules of ATP are accumulated. The action spectrum of photosynthesis is the relative effectiveness of different wavelengths of light at generating electrons. However, if the water conditions stay favorable, successive blooms can occur and appear to be one continuous population Halobacteria, which grow in extremely salty water, are facultative aerobes, they can grow when oxygen is absent.

When an algal bloom appears, the concentration of toxins increases faster than the bacteria can break it down. Acetyl coenzyme A is formed by an oxidative decarboxylation of pyruvic acid. Light-dependent reactions In the light-dependent reactionsone molecule of the pigment chlorophyll absorbs one photon and loses one electron.

These other chlorophylls still absorb sunlight, and thus assist in photosynthesis Plants, algae and cyanobacteria all engage in oxygenic photosythesis top equationwhich means that they require water and release oxygen. This led to the fact that eukaryotes have come to dominate the world.


This region where sunlight can reach is known as the euphotic zone. Cyanobacteria are the only bacteria that contain chlorophyll A, a chemical required for oxygenic photosynthesis the same process used by plants and algae 1, In coastal and open-ocean environments, oceanic circulation is responsible for phytoplankton concentrations.

Light Reactions and the Calvin Cycle The process of photosynthesis is broken up into two main groups of reactions: the "light reactions" which require light energy to operate, and the "Calvin cycle" which specifically takes carbon dioxide and turns it into organic molecules.

Respiration is the general process by which organisms oxidize. Respiration occurs in your cells and is fueled by the oxygen you inhale.

The carbon dioxide gas you exhale is the result of a completed cycle of cellular respiration. Only plants can photosynthesize, but both plants and animals depend on respiration to release the chemical potential energy originally captured through photosynthesis.

The cycle of photosynthesis and respiration maintains the balance of oxygen and carbon dioxide. Photosynthesis produces the oxygen to replenish oxygen that is used up by living organisms during respiration.

Carbon dioxide produced during respiration is one of the reactants plants need to perform photosynthesis. Watch video · And we saw in cellular respiration the very similar molecule, NADH, that through the Kreb Cycle, or actually more importantly, that through the electron transport chain, was able to help produce ATP as it gave away its electrons and they went to lower energy states.

But I don't want to confuse you too much. Cellular respiration requires oxygen (which is the by-product of photosynthesis) and it produces carbon dioxide, which is used in photosynthesis.

Photosynthesis and Respiration

In this way, photosynthesis and cellular respiration are linked in the carbon cycle. The process by which green plants, algae, diatoms, and certain forms of bacteria make carbohydrates from carbon dioxide and water in the presence of chlorophyll, using energy captured from sunlight by chlorophyll, and releasing excess oxygen as a byproduct.

Photosythesis respiration cycle
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Photosynthesis - Wikipedia