C is not an example of evolution so that is your answer
<span>The control would be a plant grown without any fertilizer. This is called a negative control and is important in identifying the influence of the treatments on the tests. In this case, it would mean that the plant without fertilizer (control) is not expected to grow as large as in the other treatment. </span>
Nitrogen released from the breakdown of proteins is used in the synthesis of urea, which is excreted by the kidneys in the urine.
- The urea acid cycle transforms the nitrogen waste released during this process into urea, which is then excreted in the urine.
- Amino acids can be converted into energy during famine and go via the Krebs cycle.
- Muscle protein is broken down into amino acids while fasting, some of which are partially oxidized to provide energy.
- These amino acids are split up into alanine and glutamine, which are released into the circulation together with other amino acids.
- Several tissues, notably the stomach and kidney, oxidize glutamine, converting some of its carbons and nitrogen to alanine.
- The liver is where alanine and other amino acids are processed into glucose and ketone bodies and nitrogen.
learn more about urea here: brainly.com/question/14718113
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