Answer:
That is administered and controlled
Step-by-step explanation:
A variable is the condition or a product that may vary without the influence of any investigator. Such variables can be found abundantly in our daily lives, ranging from air to sunlight. Controlling such variables ensures the limitation of their influence on the outcome of an experiment. In connection to this experiment, the variables that are controlled are the mineral content in the water, the amount of bacteria food, the amount of light and the the constant temperature of 20 degrees C.
If not administered or these variables controlled, the experiment would not clearly explain the impact of caffeine on the heart beat of the water fleas as other variables may have influenced it. Thus variables are controlled to study the singular impact of any agent or effect.
The reaction of cellular respiration and fermentation substrate level phosphorylation occur in both glycolysis and the citric acid cycle.
This phosphorylation occurs in the cytoplasm of cell and in mitochondria. When the phosphorylation inside the mitochondria, it occur during Krebs cycle. In this reaction the molecules are broken down in presence of oxygen to produce energy.
In cytoplasm, the reaction occur during the glycolysis. It is the reaction to add a phosphate group to a molecule that is derived from ATP.
Krebs cycle this is also known as citric acid cycle (CAC). This is the reactions in which oxidation of acetic acid provides energy for storage in phosphate bonds.
To learn more about Krebs here
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Just changed and transferred
Answer:
the one the already have clicked