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This quiz contains 9 questions from a mix of 1 subtopics.
What is produced when amine groups are removed from amino acids?
glucose and ammonia
urea and carbon dioxide
pyruvate and urea
ammonia and keto acids
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Where is urea transported to after it enters the blood plasma from the liver?
the lungs
the gallbladder
the kidneys
the liver
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What is the first step in the liver's breakdown of amino acids?
conversion of ammonia to urea
removal of amine groups via deamination
removal of waste by the kidneys
excretion of carbon dioxide
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Which of the following best describes the role of the liver in detoxification?
the liver generates waste carbon dioxide during respiration
the liver stores harmful substances like alcohol and medications
the liver converts medications and hormones into urea
the liver breaks down toxic substances into less harmful compounds
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Why is the conversion of ammonia to urea important?
ammonia aids in cell signaling
urea is more soluble than ammonia
urea is less soluble and less toxic than ammonia
ammonia is less harmful than urea
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What is the term for the process of removing metabolic waste from cells?
excretion
detoxification
respiration
homeostasis
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Which of the following is a role of the liver in the body?
producing urine
storing metabolic waste
converting ammonia to urea
removing waste carbon dioxide
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What is the process called where the liver breaks down toxic substances?
detoxification
denitrification
respiration
digestion
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Which molecule is converted into urea in the liver to remove excess nitrogen?
ammonia
glucose
glycogen
ethanal
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