Biological membranes are said to be selectively permeable. what does this term mean, and how does this affect the way the molecules are able to move through cellular membranes?

This means that some cells are able to letter molecules pass through them and this makes it easier for the molecules to pass through.

correct answer: false

while planning water activities, it is very important to consider the weather, because if we do not plan and are going for a surf, then it might be that the hurricane came and drown us or may carry us to long distance from where we can not come back. there are many reasons to take information about the weather when we are planning any water activities.

hence, the correct answer would be false.