Question

What is a characteristic of cell membranes? question 10 options: dynamic impermeable static symmetrical?

Answer 1

Dynamic

Step-by-step explanation:

A cell membrane is a biological membrane that helps to protect the cells from the outer environment. It can also be referred to as the plasma membrane. The cell membrane regulates what can enter into or come out of the cell. The cell membrane has a thin , flexible, double layer structure.

One of the characteristics of the cell membrane is that is it dynamic. The cell membrane is said to be dynamic because of the

a. lateral and rotational movement of the integral lipid and protein molecules.

b. A cell membrane is said to be dynamic because of the curvature the cell membrane which imparts shape to the cells and internal organs of the body.

Answer 2

The cell membrane, also called the plasma membrane, has the following characteristics:-

1. It is present as the outermost layer in animal cells and lies below the cell wall in plant cells.

2. The cell membrane surrounds the cytoplasm of living cells, physically separating the intracellular components from the extracellular environment.

3. The cell membrane is semi-permeable, ie, it allows some substances to pass through it and does not allow others.

4. It is thin, flexible and a living membrane, which consists of a lipid bilayer with embedded proteins/

5. The cell membrane has large content of proteins, typically around 50% of membrane volume. These proteins are important for cell because they are responsible for various biological activities.