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In an animal cell, the plasma membrane keeps out unwanted objects. In a plant cell, the cell wall does this. Unwanted items would be any foreign unknown object, harmful bacteria, or wastes excreted by other cells. Cells only let in certain things, and they do this through selective permeability. They let in water and sugars and nutrients and other things that the cell requires. They can tell what to let in because proteins attached to the plasma membrane act as signalling devices, telling the plasma membrane whether or not to let something in. Some bacteria trick the plasma membrane into letting them in.
Some bad things not allowed into a cell include toxins, pathogens, and harmful substances that could potentially damage the cell's structure or interfere with its normal functions. Additionally, large molecules or foreign particles that could disrupt the cell's internal environment or block essential processes are also restricted from entering.
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What is the importance of the cell membrane?
The cell membrane is crucial for maintaining the structure and integrity of the cell. It regulates the passage of substances in and out of the cell, allowing for proper functioning and communication with the external environment. Additionally, the cell membrane plays a role in cell recognition and signaling.
Does the cell membrane let things pass through it?
Yes, the cell membrane is selectively permeable, meaning it allows certain substances to pass through while blocking others. This is essential for controlling the movement of molecules in and out of the cell to maintain internal balance.
The part of the cell that is in most direct contact with the environment is the?
The cell membrane, which surrounds the cell and is responsible for which molecules are allowed to diffuse into or out of the cell and which molecules are impermeable to the membrane
What does the cell membrane let in and out?
It could be the cell wall? I"m not sure.
The..........is the smallest functional and structural unit of all living things?
cell
If cell phones are bad for your health why are they allowed and who is responsible?
They are not bad for your health, don't believe that b.s. (bad sources)
How does the cell membrane work to protect the cell?
It regulates what comes in and out of the cell. It works in order to keep bad things out of the cell.
Does the cell membrane have pores to let good and bad things in and out?
no
What is the cell membrane and what is it job?
Cell membranes only allow certain things to enter the cell. So basically they filter good stuff to come in the cell and don't allow bad stuff to enter. Permeable = allowed to enter Semi-permeable = somethings can enter; some can't Impermeable = nothing can enter
What blood cell eats things in your body?
Macrophages phagocytize (eat) bad things (pathogens)
What are some bad things that can happen to the nucleus in a cell?
it can shut down
Why aren't kids allowed to do what adults do?
Because if the kids do what the adults do then that can lead to bad things.
Why do you think it is important for a cell tobbe selective?
It's important for a cell to be selective, because it lets the good things in and not the bad things in, like the viruses.
What does the cell membrane in the plant and animal cell do?
The cell membrane performs the function of a filter, letting good things in and bad things out. It also protects the cell from invading sources. It lets out water and lets in oxygen.
What are bad things Nucleus do?
One bad thing the nucleus does is occasionally allows bad things to enter the cell. Sometimes, depending on the condition, the nucleus does not work properly, allowing harmful agents into our bodies.
Does the cell membrane let the good cells in a the bad cells out?
It depends. Cell membranes are selectively permeable. Meaning it will only let certain things in and out of the cell.
What is bad about radioactive things?
the gamma and beta radiations which can cause cell mutation and radiation poisoning
