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What molecules both enters AND exits the Kreb's cycle?

Pyruvic acid enters and carbon dioxide exits.


What is net gain of carbon atoms in Krebs cycle?

The net gain of carbon atoms in the Krebs cycle is zero. Although acetyl-CoA enters the cycle as a 2-carbon molecule, it ultimately combines with oxaloacetate (a 4-carbon molecule) to form citrate (a 6-carbon molecule), which is then oxidized back to oxaloacetate. This means that the total number of carbon atoms remains constant throughout the cycle.


Pyruvic acid loses a molecule of BLANK to produce acetic acid which then enters the citric acid cycle?

Carbon dioxide. Pyruvic acid undergoes decarboxylation to lose a carbon dioxide molecule and form acetic acid. This acetic acid then combines with Coenzyme A to form acetyl-CoA, which enters the citric acid cycle.


How does a rabbit return carbon back into the cycle?

It breathes out carbon in a form of carbon dioxide.


Is the carbon cycle closely related to?

The carbon cycle is closely related to photosynthesis. Photosynthesis is the process by which carbon is exchanged from the atmosphere (in the form of CO2) into the biosphere (in the form of glucose).


How do you describe the carbon cycle?

The two processes of the carbon cycle are photosynthesis and cellular respiration. In photosynthesis carbon from carbon dioxide is fixed into carbohydrates. In cellular respiration, carbohydrates are broken down to form ATP and carbon in the form of carbon dioxide is released into the atmosphere.


What processes does not occur as an acetic acid subunit enters the mitochondrion and progresses around one complete circuit of the Kreb's cycle?

One molecule of oxygen is combined with carbon to form carbon dioxide.


How and in what form does carbon center an leave the cycle?

Carbon enters the carbon cycle primarily through photosynthesis, where plants absorb carbon dioxide (CO2) from the atmosphere and convert it into organic matter. It is then transferred through various processes, including respiration, decomposition, and combustion. Carbon exits the cycle when it is released back into the atmosphere as CO2 through respiration, decay, or human activities like burning fossil fuels. Additionally, carbon can be stored long-term in geological formations or ocean sediments, effectively removing it from the active cycle.


When a carbon atom enters the atmosphere it turns into what?

it should still be carbon, but too much carbon is bad for the atmosphere. Google: "Carbon in atmoshpere" and see why it's bad


How does matter(Carbon) cycle through the carbon cycle?

During the carbon cycle, carbon in the form of carbon dioxide is absorbed by plants during photosynthesis. This carbon is then passed on to animals when they consume plants. When organisms die, the carbon is returned to the atmosphere through decomposition. Additionally, burning of fossil fuels and deforestation release stored carbon back into the atmosphere.


The carbon cycle works in conjunction with what?

The carbon cycle is closely related to photosynthesis. Photosynthesis is the process by which carbon is exchanged from the atmosphere (in the form of CO2) into the biosphere (in the form of glucose).


How is carbon-14 produced?

Carbon-14 is produced in the Earth's atmosphere when cosmic rays collide with nitrogen atoms, leading to the formation of carbon-14. This carbon-14 then combines with oxygen to form carbon dioxide, which enters the carbon cycle and is absorbed by living organisms.