3) The figure below shows the concentration of different molecules across a cell

Question

3) The figure below shows the concentration of different molecules across a cell membrane (inside and outside of a cell) Outside Cell Membrane Inside Cell Molecule Ca 2 O2 Proteoglycan 9 mg/L 5 mg/L 15/L 5 Hg/L (large protein) Glucose Explain which mechanism (simple diffusion, facilitated diffusion, active transport, endocytosis, or exocytosis) would be used to move the following molecules in the indicated direction. Why is this mechanism used? Molecule Dire Outside to Inside? Ca+2 Inside to Outside? Outside to Proteoglycan Inside? (large protein) Inside to Outside? Outside to Inside? Glucose Inside to (amino acid) Outside? a) Which direction would you expect the net flow of Oxygen to be in this instance? b) What is the mechanism the cell would use to transport oxygen across a membrane?

Explanation / Answer

a. Since the concentration of oxygen is higher outside compared to inside of the cell oxygen will move from outside to inside of the cell.

b. Oxygen will be transported across the membrane using simple diffusion.

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