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During photosynthesis within plants quizlet

So how can these factors have an effect on the rate of photosynthesis? Lets start off with the light intensity. When the light intensity is poor, there is a shortage of ATP and NADPH, as these are products from the light dependent reactions. Without these products the light independent reactions can't occur as glycerate 3-phosphate cannot be reduced. Therefore a shortage of these products will limit the rate of photosynthesis. When the carbon dioxide concentration is low, the amount of glycerate 3-phosphate produced is limited as carbon dioxide is needed for its production and therefore the rate of photosynthesis is affected. Finally, many enzymes are involved during the process of photosynthesis. At low temperatures these enzymes work slower. At high temperatures the enzymes no longer work effectively. This affects the rate of the reactions in the Calvin cycle and therefore the rate of photosynthesis will be affected.

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Photosynthesis occurs inside chloroplasts. Chloroplasts contain chlorophyll, a green pigment found inside the thylakoid membranes. These chlorophyll molecules are arranged in groups called photosystems. There are two types of photosystems, Photosystem II and Photosystem I. When a chlorophyll molecule absorbs light, the energy from this light raises an electron within the chlorophyll molecule to a higher energy state. The chlorophyll molecule is then said to be photoactivated. Excited electron anywhere within the photosystem are then passed on from one chlorophyll molecule to the next until they reach a special chlorophyll molecule at the reaction centre of the photosystem. This special chlorophyll molecule then passes on the excited electron to a chain of electron carriers.

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Where is the carbon taken in by plants during photosynthesis stored

Sugars created in photosynthesis can be later converted by the plant to starch for storage, or it can be combined with other sugar molecules to form specialized carbohydrates such as , or it can be combined with other nutrients such as nitrogen, phosphorus, and sulfur, to build complex molecules such as and .

During this process, QH2 passes its two protons back across the plasma membrane into the periplasm when its two electrons are passed on to cytochrome bc1. However, cytochrome c2 is only a one-electron acceptor, and the transfer from QH2 occurs in a two-stage "Q-cycle" with the result that, for every two electrons that reach cytochrome c2, 4 H+ are translocated into the periplasm from the cytoplasm, thereby generating an H+ gradient. Dissipation of this chemical gradient powers ATP synthesis.

What Happens During Photosynthesis In Plants? - …

During photosynthesis, plants use - Weegy

Through the process of photosynthesis, sun light is absorbed by plants and converted into chemical energy. Using that chemical energy, the plants are then able to absorb carbon dioxide from the atmosphere and turn it into food for themselves. A beneficial byproduct of that food production is oxygen, which humans need in order to breathe. Photosynthesis will occur in plants, algaes, and different species of bacteria, and organisms that can perform photosynthesis are referred to as photoautotrophs, meaning they can create their own food. Photosynthesis is vital to life on Earth as it helps maintain normal levels of oxygen in the air which is necessary for survival of most species.

In leafy plants, the process of photosynthesis occurs largely in the leaves. Because of this, all the necessary ingredients need to be present in the leaves for the reaction to take place. Carbon dioxide is absorbed into the leaves from the air, water is routed from the roots to the leaves, and sunlight is absorbed into the leaves through chlorophyll. Chlorophyll is a green pigment inside plant cells called chloroplasts - which also have several other structures within them. Chloroplasts are important because they are where photosynthesis takes place.

During photosynthesis, plants use CARBON DIOXIDE to make sugars and starches.
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This tutorial introduces photosynthesis

(3) Exciton Transfer (Resonance Energy Transfer): Transfer of energy to a nearby unexcited molecule with similar electronic properties. This can happen because the molecular orbital energy levels of the molecules overlap. This mechanism will play an important role in photosynthesis.

Glossary of Terms: P - Physical Geography

Photosynthesis is made possible by organelles called chloroplasts that are tightly embedded in cell membranes. Each membrane holds anywhere from 10 to 100 chloroplasts. Chloroplasts are either folded into sheets or bunched up into balls and fill most of the space within a membrane to provide the plant with an extremely large surface area to absorb more light, even though these processes take place on a microscopic level. The membrane surrounding the chloroplast is made up of the phospholipid inner membrane and the phospholipid outer membrane with a space in the middle. This empty space is filled with a liquid called stroma which contains thylakoids. Thylakoids contain all of the essential proteins and pigmentation necessary to absorb light energy and convert it into food and oxygen.

photosynthesis | Importance, Process, & Reactions - …

Photosynthesis describes the process that plants use to convert light energy, water, and carbon dioxide into sugar and oxygen. Photosynthesis is used by plants, some bacteria such as algae, and some animals such as mollusks. Scientists currently believe that our modern atmosphere could not exist the way it does without the photosynthesis process and the surrounding carbon cycle that it plays a part in. Not only does photosynthesis affect the atmosphere, but it also affects the food cycle here on Earth. Plants use photosynthesis to create their own food. Small creatures eat these plants and absorb their energy. Larger animals eat the smaller ones and also absorb their energy. Eventually, the largest animals die and their energy is returned to the soil where it is absorbed by plants. All living organisms either benefit from photosynthesis directly or indirectly, including humans.

NOVA - Official Website | Illuminating Photosynthesis

Photosynthesis works by absorbing light. Light energy causes the molecules in chlorophyll to lose electrons but they gain photons. This sets off a chain reaction that causes the plant to lose NADP and NADPH. The reduction causes the plant to produce ATP which then replaces the electrons that were previously lost through a process known as water photolysis. This process also causes a dioxide (O2) molecule to be released, which is what we know as oxygen. Not all forms of light are absorbed through this process, however, and the remaining wavelengths are what decides the color of the plant. For example, green plants do not absorb the equivalent wavelength so the plant appears to be green, while all other wavelengths are absorbed.

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