What can pass trough a selectively permeable membrane?

Answer 1

It depends on what type of selectively permeable membrane.

The cell membrane, which is an example of a selectively permeable membrane, allows the passage of non-polar molecules (such as steroid hormones) and small uncharged polar molecules (such as water).

Answer 2

Only certain particles, ions, or water can cross a semipermeable membrane. The particles that are allowed through depends mostly on their size and the cell's needs, and the cell will filter out any particles that are too large or are harmful to the cell.

Answer 3

Water molecules, certain ions, glucose and non-polar compounds can pass through the cell membrane without the requirement of energy. They cannot pass through the membrane at any random location. They can only gain access to the cell interior when they pass through cell surface transporters

Answer 4

Lipids and to a lesser extent water. Steroid hormones.

Answer 5

sugar molecules.

Answer 6

water