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Figure 7 shows the human urinary system - Edexcel - GCSE Biology - Question 4 - 2021 - Paper 1
Question 4
Figure 7 shows the human urinary system. (a) Urine is made by removing water, urea and salts from the blood. Use the letter X to label where urine is made. (b) Whi... show full transcript
Worked Solution & Example Answer:Figure 7 shows the human urinary system - Edexcel - GCSE Biology - Question 4 - 2021 - Paper 1
Step 1
Step 2
Which substance is converted to urea in the liver?
Answer
Amino acids are converted to urea in the liver through a process called deamination. During this process, the amine group is removed from the amino acids, which leads to the formation of urea, a waste product that is subsequently excreted in urine.