Steps of Photosynthesis - Bing images
NADPH and ATP, made in the light independent processes of photosynthesis are used as energy for the carbon atom.
The two steps of photosynthesis, from Openstax College
The light-independant reactions of photosynthesis occur in the stroma of the chloroplast and involve the conversion of carbon dioxide and other compounds into glucose. The light-independent reactions can be split into three stages, these are carbon fixation, the reduction reactions and finally the regeneration of ribulose bisphosphate. Collectively these stages are known as the Calvin Cycle.
Oxygen molecules are being released in the air.
ADP is then bonded to a phosphate group which makes ATP molecules , it then transfers light-independent reactions to provide energy for the next step.
In the light-independent reaction carbon doesn't need light , but still goes on while there is light.
This reaction occurs in the stroma of the chloroplasts.
In this process carbons are changed from CO2 to the carbon skeletons of existing organic molecules , six carbons are used o make a single six-carbon glucose molecule.
Glucose is then made and carbons are released back into the air.
Carbon atoms are constantly changing because as photosynthesis is taking place and energy is converting and transferring , the carbon atom is force to change repeatedly .
Glycolysis is the process where glucose ( a six carbon molcule ) is broken down into two 3 carbon molecule which are both called pyruvate.
This phase consists of six distinct enzymatic steps…
The carbon atom light dependent reactions light independent reactions Transitioning between photosynthesis and respiration Twelve three-carbon molecules are formed from every six carbon dioxide molecule.
Glycerate 3-phosphate is reduced during the reduction reactions to a three-carbon sugar called triose phosphate. Energy and hydrogen is needed for the reduction and these are supplied by ATP and NADPH + H+ (both produced during light-dependent reactions) respectively. Two triose phosphate molecules can then react together to form glucose phosphate. The condensation of many molecules of glucose phosphate forms starch which is the form of carbohydrate stored in plants. However, out of six triose phosphates produced during the reduction reactions, only one will be used to synthesise glucose phosphate. The five remaining triose phosphates will be used to regenerate RuBP.
PPT - Chapter Six: Photosynthesis PowerPoint …
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.
During carbon fixation, carbon dioxide in the stroma (which enters the chloroplast by diffusion) reacts with a five-carbon sugar called ribulose bisphosphate (RuBP) to form a six-carbon compound. This reaction is catalysed by an enzyme called ribulose bisphosphate carboxylase (large amounts present within the stroma), otherwise known as rubisco. As soon as the six-carbon compound is formed, it splits to form two molecules of glycerate 3-phosphate. Glycerate 3-phosphate is then used in the reduction reactions.
Basic Steps of Photosynthesis - Bing images
Photosynthesis Steps For Kids - More information
Photosynthesis is a series of chemical and physical interactions that uses energy from light to convert six ..
Light Reactions And Calvin Cycle Of Photosynthesis - More information
steps are light-dependent ..
photosynthesis notes - Biology Junction
Sixth graders are introduced to the process of photosynthesis by discussion and then by participating in an experiment
Chemistry for Biologists: Photosynthesis
If you have a brief idea about the required raw materials and the products of this process, you will easily understand the chemical reactions.
In photosynthesis, carbon dioxide is used as a substrate base for producing glucose and oxygen with the help of light energy and water.
The process of photosynthesis: carbon fixation and reduction
Thus, in this process, six molecules of carbon dioxide and six molecules of water react in presence of sunlight to produce one molecule of glucose and six molecules of oxygen.
The final product of this process, i.e., glucose is stored in the complex molecular structure of the plant cells.
photosynthesis facts, information, pictures | …
A lot of my college students still have trouble with this one. The reactions that happen in respiration and photosynthesis are different, but if we just look at what goes in and what comes out, they're opposites.
Carbon dioxide (CO2) and Water (H20) in, Oxygen and Sugar out.
Requires energy from the sun.
Here's cellular respiration:
Oxygen and Sugar in, CO2 and H20 out. Releases energy from the sugar.
Plants can do both. When they have light, they use it as an energy source to put the pieces of CO2 and H2O to make sugar. They can put a bunch of sugars together to make starch (what foods are starchy?), cellulose (the stringy stuff you can't chew up), and wood.
When it's dark, they can do cellular respiration to break down the starch and sugar to release the energy they need.
Poor animals, we can only do cellular respiration. We need foods like starch, and oxygen, and we breathe out the CO2 that's made. We don't get enough water from the process to take care of all of our needs so we have to drink more. Kangaroo rats don't have to drink water. They conserve water a lot better than we do.
Can plants live without animals? Can animals live without plants?
Thanks for asking.
What Are Photosynthesis and Respiration? - dummies
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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