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The total water loss was 2600 cm³ - AQA - GCSE Biology - Question 4 - 2020 - Paper 1
Question 4
The total water loss was 2600 cm³. Calculate the percentage of the total water loss that was lost as urine. Figure 5 shows the water loss from a person on one day. ... show full transcript
Worked Solution & Example Answer:The total water loss was 2600 cm³ - AQA - GCSE Biology - Question 4 - 2020 - Paper 1
Step 1
Calculate the percentage lost as urine
Answer
To find the percentage of water lost as urine, first identify the volume of urine lost:
- Volume of Urine = 1430 cm³
Next, use the formula for calculating percentage:
ext{Percentage} = rac{ ext{part}}{ ext{whole}} imes 100Now substitute the values:
ext{Percentage lost as urine} = rac{1430 ext{ cm}^3}{2600 ext{ cm}^3} imes 100 = 55 \%Step 2
Describe the advantages and disadvantages of having a kidney transplant instead of having dialysis
Answer
Advantages of Kidney Transplant:
- Improved Quality of Life: Transplant recipients often experience better overall health and fewer restrictions compared to those on dialysis.
- Longer-Term Solution: A transplant can potentially last many years, providing a long-term solution to kidney failure.
- Avoids Dialysis: Recipients do not need to undergo frequent dialysis sessions.
Disadvantages of Kidney Transplant:
- Need for a Donor: Finding a suitable donor can be challenging and may take time.
- Major Surgery Risks: The transplant procedure involves surgery that carries risks and complications.
- Immunosuppressive Drugs: Post-transplant, patients must take immunosuppressive medications to prevent rejection, which can have side effects.