linerlux.blogg.se - Summarize the steps of the water cycle.

#Summarize the steps of the water cycle. full#
#Summarize the steps of the water cycle. series#

Image Source: Rice University (OpenStax).Īfter glycolysis, in aerobic organisms, the pyruvate molecules are carboxylated to form acetyl CoA and CO 2.

Pyruvate formed at the end of glycolysis is first oxidized into Acetyl CoA which then enters the citric acid cycle.

This cycle is also particularly important as it provides electrons/ high-energy molecules to the electron transport chain for the production of ATPs and water.

The citric acid cycle is a cyclic sequence of reactions formed of 8 enzyme-mediated reactions.

Molecules from other cycles and pathways enter this cycle through Acetyl CoA.

The citric acid cycle is the final common pathway for the oxidation of all biomolecules proteins, fatty acids, carbohydrates.

This cycle only occurs under aerobic conditions as energy-rich molecules like NAD + and FAD can only be retrieved from their reduced form once they transfer electrons to molecular oxygen.

However, now it has been known that the first product is indeed citric acid and thus the use of this name has since been discouraged.

This cycle is also termed tricarboxylic acid (TCA) because it was then not certain whether citric acid or some other tricarboxylic acid ( g., isocitric acid) was the first product of the cycle.

This cycle is termed the citric acid cycle as the first metabolic intermediate formed in the cycle is citric acid.

#Summarize the steps of the water cycle. series#

In summary, nature balances its water in a continuous process of evaporation,condensation and precipitation.The Krebs cycle, also known as the citric acid cycle or TCA cycle is a series of reactions that take place in the mitochondria resulting in oxidation of acetyl CoA to release carbon dioxide and hydrogen atoms that later lead to the formation of water. One is it directly run off to the ocean and second,it percolates in to the ground water and gradually mix with the ocean water by taking some minerals, such as salt from the ground. Second, the water vapour condenses and forms cloud at a certain distance from the ground and later precipitates back to earth as tiny water droplets called rain.įinally, the water that reaches the ground surface, eventually joins the oceans in two different ways. There are four main stages in this process, beginning with evaporation and ends with joining to the oceans.įirst, water evaporates to the air in the form of water vapor,eighty percent of which comes from the oceans. Overall, what goes up from the earth comes back to it. The figure illustrates the natural process of water circulation in the ground, the oceans and air. I usually include concluding paragraph in my task 1 writing, because I don't feel comfortable when I don't include it and I put the overview in the introduction - one sentence. Salt water intrusion is shown to take place just before groundwater passes into the oceans to complete the cycle. Otherwise, rainwater may filter through the ground, reaching the impervious layer of the earth. Some of it may fall into lakes or return to the oceans via ‘surface runoff’. At the second stage, labelled ‘precipitation’ on the diagram, water falls as rain or snow.Īt the third stage in the cycle, rainwater may take various paths. Heat from the sun causes water to evaporate, and water vapour condenses to form clouds. Ocean water evaporates, falls as rain, and eventually runs back into the oceans again.īeginning at the evaporation stage, we can see that 80% of water vapour in the air comes from the oceans. Three main stages are shown on the diagram. The picture illustrates the way in which water passes from ocean to air to land during the natural process known as the water cycle.

The diagram below shows the water cycle, which is the continuous movement of water on, above and below the surface of the Earth.

#Summarize the steps of the water cycle. full#

Several people have asked me for the full essay for this question, so here it is!