Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment.
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
1- List three different structures that are present in plant cells, but not in animal cells.
Animal cells are eukaryotic cells. It means they contain a true nucleus and a specialized structure known as an organelle. They are enclosed by the plasma membrane but they lack a cell wall. Prokaryotic cells do not have membrane-bound organelles such as mitochondria. Animal cells do not have cell walls such as lung cells, sperm cells, or cells from fingernails. They would not have a cell wall.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
