Oh things like food, oxygen, ions, and even hormones.
yes plant cells needs a cell membrane
Yes, small hydrophobic molecules can cross the cell membrane.
Yes, nonpolar molecules can cross the cell membrane through simple diffusion.
the cell membrane is like the skin of a cell. it keeps everything in that needs to be in and everything out that needs to be out.
There are two ions that can cross the cell membrane. The positively charged sodium and potassium ions can cross back and forth across the neuron cell membrane.
Yes, polar molecules can cross the cell membrane through facilitated diffusion or active transport.
It is the ability of the membrane to allow ions and/or particles to cross.
Yes, small polar molecules can cross the cell membrane through a process called passive diffusion.
Intracellular
Polarity
Osmosis
Yes because the cell membrane allows non polar molecules through