What are two likely reasons a cl ion cannot pass through a sodium ion channel?

The answers are;

1.Cl- is bigger an size atom compared to K+.  Therefore, Cl does not fit in the active site of the of the ion channel transmembrane protein.

2.Cl- is an anion while K+ is a cation. Cl- therefore does not interact positively with the charges in the channel of the transmembrane protein

Independent Variable: Where clothes are thrown

Dependent Variable: If floor will be visible/clean bedroom

Control Variable: How many clothes left on the floor

Explanation: