Scientific calculations - Translate tables and bar charts
An example of an exam questions showing data of substances in the blood plasma.
The concentration of the substances in the fluids is measured in grams per dm3.
Substance
Blood plasma
Filtrate in the kidney tubules
Urine
Water
850.0
850.0
900.0
Protein
75.0
0.0
0.0
Glucose
0.9
0.9
0.0
Amino acids
0.4
0.4
0.0
Urea
0.3
0.3
22.0
Sodium ions
2.7
2.7
3.6
Substance
Water
Blood plasma
850.0
Filtrate in the kidney tubules
850.0
Urine
900.0
Substance
Protein
Blood plasma
75.0
Filtrate in the kidney tubules
0.0
Urine
0.0
Substance
Glucose
Blood plasma
0.9
Filtrate in the kidney tubules
0.9
Urine
0.0
Substance
Amino acids
Blood plasma
0.4
Filtrate in the kidney tubules
0.4
Urine
0.0
Substance
Urea
Blood plasma
0.3
Filtrate in the kidney tubules
0.3
Urine
22.0
Substance
Sodium ions
Blood plasma
2.7
Filtrate in the kidney tubules
2.7
Urine
3.6
Question
Describe the similarities and differences between the levels of substances within the three different fluids in the table. Include at least three examples of substances in your answer.
Certain substances remain the same in the blood plasma and filtrate such as water (850 g/dm3), glucose (0.9 g/dm3 ), amino acids (0.4 g/dm3 ), urea (0.3 g/dm3 ) and sodium ions (2.7 g/dm3 ).
When comparing the three fluids, a number of substances differ such as water, protein, glucose, amino acids, and urea and sodium ions. The water is more concentrated in the urine (900 g/dm3 ) than in the filtrate (850 g/dm3 ); the protein in the plasma is at 75 g/dm3 but at 0 g/dm3 in the urine. The glucose is at 0.9 g/dm3 in the plasma and filtrate but 0.0 g/dm3 in the urine.