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What statements describe the cell membrane?

What statements describe the cell membrane?

The cell membrane lets anything enter the cell. The cell membrane lets anything leave the cell. The cell membrane is a protective layer surrounding a cell. The cell membrane allows waste to leave the cell.

Why is it important for the cell membrane to allow materials to enter and leave the cell?

Cell membrane needs to allow and exit the materials that enter the cell because the cell needs nutrients and these nutrients are converted into molecules that aid in many cellular activities like repair, divide and form structures and biomolecules.

What is meant by the following statement about the cell membrane the cell membrane is said to be semipermeable?

The cell membrane or a plasma membrane is a semipermeable membrane which means that this is a layer that allows only certain molecules that can pass through it. This allows the cells to keep their materials and the contents parted from the environment and from the other cells.

What are two functions of a cell membrane?

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

How many types of cell membranes are there?

three classes

What disease does the cell membrane cause?

These diseases include Liddle’s syndrome, long QT syndrome, hyperkalemic periodic paralysis, cystic fibrosis, myotonia congenita, nephrogenic diabetes inspidus, glucose/galactose malabsorption, cystinuria, and Wilson’s disease.

What would happen if we didn’t have cell membranes?

The cell membrane is essential to the life of the cell and without it, the cell dies. If all the cells in an organism suddenly die, the organism itself dies as well. Cell walls anchor the cytoplasm and hold the cell’s shape. …

What would happen to a cell if the cell membrane broke?

If the plasma membrane ruptures or breakdown then the cell will not be able to exchange material from its surrounding by diffusion or osmosis because it acts as a mechanical barrier. Thereafter, the protoplasmic material will be disappeared and the cell will die.

Why are membranes fluid and flexible?

Cell Concept 1: Membranes are Fluid and Flexible. Cell membranes are not static, they bend and flex in order to adapt to changing conditions. Like the bubble film, membranes can flex without breaking. Attraction between phospholipids allows cell membranes to repair breaks in the bilayer.

What are two ways that a bubble is like a membrane?

The cell membrane is kind of like a soap bubble. A soap bubble consists of a thin, flexible membrane. The soapy membrane seals the inside air from the outside. Likewise the cell membrane is a thin, flexible layer that seals the inside of the cell from its outside environment.

How are cell membranes fluid and flexible?

If unsaturated fatty acids are compressed, the “kinks” in their tails push adjacent phospholipid molecules away, which helps maintain fluidity in the membrane. The ratio of saturated and unsaturated fatty acids determines the fluidity in the membrane at cold temperatures.