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bskyeb14579
15.07.2019 •
Biology
The second electron transport chain ends with a(n) that creates nadph. a. enzymeb. glucosec.waterd. none of the above2. what mediates the reduction of carbohydrates during the calvin cycle? a.waterb.enzymesc.electronsd.none of the above3. the electron transport chain is where electron energy is converted into a. dnab. atpc. rnad. water4. the final product of is glucose. a.cellular respirationb.the light dependent reactionc.the calvin cycled.none of the above5. every glucose molecule that enters glycolysis yields 2 molecules. a.nadhb.dnac.pgad.none of the above6.when oxygen is available, a cell will begin the krebs cycle aftera.the calvin cycle. b.glycolysis. c.the electron transport chain. d.none of the above7. n
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Ответ:
NADPH are molecules which are produced during reduction of metabolites (for example glucose metabolism, lipid metabolism...)
2. The right answer is enzymes.
The dark reactions (carbon cycle) act by the reduction of carbon dioxides (CO2) to the level of a carbohydrate (like fructose).
3. The right answer is ATP.
ATP, or adenosine triphosphate, is a nucleotide of the purine family used to store and transport energy (purines are nitrogenous bases).
4. The right answer is the Calvin cycle.
The Calvin cycle is a series of biochemical reactions that take place in plant chloroplasts. The Calvin cycle makes it possible to manufacture glucose, an energy molecule, from carbon dioxide. This is called carbon fixation.
5. The right answer is NADH
The overall assessment of glycolysis is:Glucose + 2 ADP + 2 Pi + 2 NAD + > 2 pyruvate + 2 ATP + 2 H2O + 2 NADH
As we can see, the glycolysis produce indeed 2NADH from a reduction of metabolites during the process.
6. The right answer is Glycolysis.
Glycolysis is the first chain of carbohydrate catabolism, it is carried out in the cytosol by soluble enzymes and anaerobically (without oxygen supply). Its function is the synthesis of a molecule rich in energy, as well as the formation of pyruvate which will have several destinies, including the Krebs cycle.
The Krebs cycle (or tricarboxylic cycle or citric acid cycle) is the energy platform of the cell, continuing the catabolism of carbohydrates after glycolysis. It is realized in the mitochondrial matrix and is done exclusively in aerobic.
Ответ:
a) tree roots expel carbon into the soil as they grow.
Explanation:
Roots offer physical anchoring to the soil of the tree, with water uptake and inorganic nutrition as its principal activity.
The absorption and the transfer of ions and the growth and maintenance of the roots themselves require energy, therefore releasing CO2 into the ground and into the air.
A diverse ground microbiota exists underneath the earth in addition to the plant roots. Their work results in carbon dioxide being released into the soil, which flows into the air. This soil microbiota is responsible for decomposing the litter and, in general, any dead organic matter in the soil. It may breathe more than half of the total soil respiration. Soil temperature and humidity strongly affect root and microbial activity. In warm and moderately moist soils, soil breathing is highest.