Which observation proves that a cell is a eukaryote? A) It contains DNA B) It contains ribosomes C) It has a cell membrane D) It has DNA inside a nucleus

Q: Are there living beings without cells?

A: Cell is considered as the basic structural and functional unit of living organisms. eukaryotes are…

Q: Is the outer membrane part of the cell wall?

A: Cell wall is the protective, semi-permeable outer layer of plant cell, whose major function is to…

Q: What are  functions of the cytoplasm?

A: The cell is the smallest and fundamental unit of life. Every living being made up of cells and it is…

Q: What are the three cytoskeleton structures?

A: Cytoskeleton is a network of protein fibres that support cell shape and organelles that remain…

Q: Who discovered the cytoplasm?

A: The cytoplasm is a matrix found inside the cell where all the cell organelles are lodged. The…

Q: Do eukaryotes have periplasmic space?

A: Eukaryotes have defined nucleus that is surrounded by a nuclear membrane. They are longer than the…

Q: Where is cytoplasm located?

A: Introduction  Cell is the basic unit of life. All organisms be it single cellular or multicellular,…

Q: Where is the cell membrane?

A: The cell is the biological unit in all organisms. It consists of cytoplasm, cell organelles,…

Q: distinguish prokaryotic from eukaryotic cells?

A: Prokaryotic cells are found in archaea and bacteria and are 0.1-5 micrometers in diameter.…

Q: The presence of a nucleus organized within the membrane nuclear is characteristic of: A.…

A: The cell is the basic structural and functional unit of life. It carries out various functions in…

Q: What are the functions of the cytoskeleton?

A: The cytoskeleton is a dynamic network of protein filaments and tubules. It is found in the cytoplasm…

Q: Why are cilia and flagella important?

A: The cytoskeleton is an extensive structure that provides shape, strength, and motility to a cell.…

Q: What are the functions of a cell wall?

A: Introduction:The cell is the basic structural and functional unit of life.A eukaryotic cell is quite…

Q: B, C, D only     A, B, C, D     A, B, C only     A, C, D only

A: Prokaryotes are unicellular organisms with no membrane-bound structures, the most notable being the…

Q: Why do bacterial cells need cell walls? Do all bacteria have cellwalls?

A: Bacteria are unicellular, prokaryotic organisms that do not have a well-defined nuclei and…

Q: Do you consider it a reasonable conjecture that cells could have arisen as bare cytoplasm without a…

A: The cell is considered as the basic unit of life. There are two types of cells such as prokaryotes…

Q: What organelle moves in a wave-like motion to provide movement for a cell?

A: The cellular organelle is the specialized subunits that are present inside a cell performing…

Q: is cytoskeleton present in all prokaryotic and eukaryotic cell?

A: A structure that maintains cell shape is the cytoskeleton.

Q: How do organisms such as plants, fungi,and bacteria maintain cell size and shape?

A: The structure, shape, and size of cells are all related to their functions. The shape of the object…

Q: What is the function of cilia, flagella, pili?

A: Cells has many structures which assist them in motility, attachment, exchange of genetic material…

Q: Which are the intracellular organelles present in bacteria?

A: Bacteria are prokaryotes and are single celled. They are different from plant and animal cells and…

Q: Can microscopic life arise from nonliving matter?

A: Introduction  There are several hypotheses presents on that how life starts on the primitive earth.…

Q: How are organelles and cytoplasm passed from one generation to the next?

A: DNA found outside of the nucleus is called extranuclear DNA. It is also sometimes called cytoplasmic…

Q: What is the structure and role of each organelle: lysosome, vacuole, mitochondria, membrane,…

A: In a cell, there is organelles. Each organelles have one or more specific functions to perform. Some…

Q: Are bacteria the only prokaryotic beings?

A: Bacteria are microscopic single-celled prokaryotes that thrive in diverse environmental conditions.…

Q: What is it, exactly, that makes a cell, or an organism that consists of them, alive?

A: A cell is the basic structural and functional unit of living organisms. Both prokaryotic and…

Q: How can prokaryotic cell be smaller than eukaryotic cell and still carry all the functions of life?

A: Cell theory state that the cell is the basic unit of life. All living organisms are composed of one…

Q: Who first saw and described a live cell?

A: Robert Hooke, in 1665 first discovered the cell. But these cells were dead plant cells.

Q: For what reasons would a eukaryotic cell evolve an endoplasmicreticulum and a Golgi apparatus?

A: A eukaryotic cell is one of two defined types of cells that are characterized by the presence of a…

Q: How does a single cell become a complex,multicellular organism?

A: Cells are the fundamental unit of life which are made up of molecules. Cells consist of small…

Q: Which cell structure produces proteins?

A: Proteins are macromolecules that are essential for almost all the process that is involved in the…

Q: Do prokaryotes have periplasmic space?

A: Prokaryotes are the unicellular organisms. They lack a well-defined nucleus. They possess circular…

Q: Do all cells show the characteristic nucleus and cytoplasmic processes? Explain.

A: Cells are the basic functional unit of the body.

Q: Which type of cell came first in evolution - the eukaryotic cell or the prokaryotic cell?

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: What would happen if there is no cytoplasm?

A: A cell is a basic membrane-bound unit and it is often called the basic building blocks of all living…

Q: How old is Earth and when did cells first appear on Earth?

A: The term 'Biology" can be split as "Bio", which means "Life" and "logy" meaning "Study of life".…

Q: What cellular components are common to prokaryotic and eukaryotic cells ?

A: The question asks to determine the cell components that are common to both prokaryotic and…

Q: Which characteristic is shared by prokaryotes and eukaryotes? a. cytoskeleton b. nuclear envelope c.…

A: Prokaryotes are microscopic unicellular organisms. They are of two types- bacteria and archaea.…

Q: Match each cell structure/organelle with the type of cell it is found in (Prokaryotic, Eukaryotic,…

A: They consist of eubacteria and archaebacteria. Bacteria are simple prokaryotic organisms which are…

Q: Which cell organelles function as the power house of a living cell?

A: Mitochondria are the cell organelles which function as the power house of the cell. These are tiny…

Q: What is the name of the semi-permeable structure that surrounds cellular protoplasm and creates…

A: Cellular protoplasm is surrounded by plasma membrane which is semi-permeable in nature and creates…

Q: What is the name of the semi-permeable structure that creates tight compartments surrounding…

A: Inside the cell wall, protoplasm is a jelly-like, colorless, transparent, and viscous fluid. The…

Q: how are the organelles in a cell similar to the organs in a human body?

A: A cell is the basic structure and functional unit of all cellular organisms, which is capable of…

Q: What does a living cell look like under the microscope?

A: Microscope is an apparatus that is used to view the organisms and objects that are too small to be…

Q: What features of mitochondria and chloroplasts are consistent with an endosymbiotic origin of the…

A: The endosymbiotic theory : It is the evolutionary theory of origin of eukaryotic cells ( advanced…

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.