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.
![art B-Processes occurring at a bacterial replication fork
The diagram below shows a bacterial replication fork and its principal proteins.
Drag the labels to their appropriate locations in the diagram to describe the name or function of each structure. Use pink labels for the pink targets and blue labels for the blue targ
Replaces RNA primers
with DNA nucleotides.
Catalyzes
phosphodiester bond
formation, joining
DNA fragments.
Leading
strand
Breaks hydrogen
bonds, unwinding
DNA double helix.
Synthesizes DNA 5' to
3 on leading and
lagging strands.
Lagging
strand
Coats single-stranded
DNA, preventing
duplex formation.
Relaxes supercoiled
DINA.
Synthesizes RNA
primers on leading
and lagging strands.
e
Overall direction
of synthesis
reset ? help](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1613d903-0fc3-46ad-801a-24ab0ce90920%2Fea8d9f40-dd4e-4ab3-b7e3-50cb27f0d3e1%2F4we6hi_processed.png&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Biology 2e](https://www.bartleby.com/isbn_cover_images/9781947172517/9781947172517_coverImage_Textbooks.gif)
![Human Heredity: Principles and Issues (MindTap Co…](https://www.bartleby.com/isbn_cover_images/9781305251052/9781305251052_smallCoverImage.gif)
![Biology: The Unity and Diversity of Life (MindTap…](https://www.bartleby.com/isbn_cover_images/9781305073951/9781305073951_smallCoverImage.gif)
![Biology 2e](https://www.bartleby.com/isbn_cover_images/9781947172517/9781947172517_coverImage_Textbooks.gif)
![Human Heredity: Principles and Issues (MindTap Co…](https://www.bartleby.com/isbn_cover_images/9781305251052/9781305251052_smallCoverImage.gif)
![Biology: The Unity and Diversity of Life (MindTap…](https://www.bartleby.com/isbn_cover_images/9781305073951/9781305073951_smallCoverImage.gif)
![Biochemistry](https://www.bartleby.com/isbn_cover_images/9781305577206/9781305577206_smallCoverImage.gif)
![Biology Today and Tomorrow without Physiology (Mi…](https://www.bartleby.com/isbn_cover_images/9781305117396/9781305117396_smallCoverImage.gif)