You could use lots of analogies. Cell membranes keep the traffic of things going on in the cell. It also keeps stuff in or out. You could say it works like screen a door.
Perhaps a better analogy is that the cell membrane is like a border (between countries). The cell membrane (much like the border guards) control the traffic in and out of the cell.
A fun answer could be to compare it to a Club bouncer, that allows certain people in and blocks the entrance of others.
Another analogy for a cell membrane is that it is like a sieve. That is because it lets smaller particles (like water) in, while stopping bigger particles that could cause the cell harm out.
A door because the Cell Membrane controls what goes in and out of the cell, and so does a door. A door keeps things like wind and bugs out from coming inside, a door also saves you from losing cool air in the summer and heat in the winter.
the body of the car
It could be a gate. It is a gate because the door is the cell membrane. See you need to get past the cell wall before the cell membrane.
nclear membrane is to a?
Like a gate. Cell membrane regulates what enters/exits home like gate does for home. & Supports & protects home like cell membrane does for cell.
The plasma membrane could be considered the gate to the city. :)
You can relate a cell membrane to the school's office because they control who comes into the school. (i.e.: visitor's have to check in at the front office they can't just walk in without checking in)
It could be a gate. It is a gate because the door is the cell membrane. See you need to get past the cell wall before the cell membrane.
A prokaryote is a kingdom but it fits into into the Monera kingdom. Prokaryotes are molecules surrounded by membrane and cell wall.
nclear membrane is to a?
I think the border of the city or like a fence or wall would be the best one I can think of.
Like a gate. Cell membrane regulates what enters/exits home like gate does for home. & Supports & protects home like cell membrane does for cell.
The plasma membrane could be considered the gate to the city. :)
A door because the Cell Membrane controls what goes in and out of the cell, and so does a door. A door keeps things like wind and bugs out from coming inside, a door also saves you from losing cool air in the summer and heat in the winter.
cell membrane fence nucleus townhall cytoskeleton bridges and buildings scrap yard lysosomes
Many textbooks will compare a cell membrane to the fluid mosaic model, which means that the parts of the membrane (phospholipids, cholesterol, proteins etc.) are not stuck in one place; they move around and can pass by one another while still keeping the integrity of the membrane. That is mainly for the structure, but structure always lends to function.
If cell is a factory, mitochondria is its powerhouse
You can relate a cell membrane to the school's office because they control who comes into the school. (i.e.: visitor's have to check in at the front office they can't just walk in without checking in)
As you probably know, an analogy is a thing that helps someone to understand a concept. For instance an example of an analogy is: "The Nucleus of a cell is like a Brain, because the nucleus of a cell controls what goes on in it." The analogy for Cell Nucleus is Brain in this case. A FUNCTIONAL analogy is an analogy of an object or thing that doesn't necessarily look, smell, feel, taste, or sound like your to-be-analogized thing, but it has a similar purpose. An example of this is: "The cell membrane of an animal cell is like a bunch of security guards because they both control what goes in/out." I hope I was helpful.