Q1. Cells, tissues and organs are adapted to take in different substances and get rid of
different substances.
The table shows the concentration of four ions outside cells and inside cells.
lon
Concentration
outside cells in mmol
Concentration inside
cells in mmol per dm
per dm
Sodium
140
9
Potassium
7
138
Calcium
2.
27
Chloride
118
3
(a)
Use information from the table above to complete the following sentences.
Sodium ions will move into cells by the process
of
Potassium ions will move into cells by the process
of
(2)

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