Why do they do not penetrate through the lipid bilayer?

Q: How do the different components like lipids, carbohydrates, and proteins exhibit the…

A: Cell membrane is selectively permeable (Semi-permeability- only let in some molecules inside the…

Q: Why will you reconstitute the receptor into a lipid bilayer?

A: G-protein coupled receptor - It is also termed as 7 pass transmembrane domain receptor. this get…

Q: Which of the following components of the cell membrane is found exclusively in the outer layer of…

A: All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the…

Q: Which of the following schematics of cell membranes (i-iv) show the correct orientation of…

A: The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate…

Q: What would probably happen to the plasma membrane of a cell if it were composed of hydrophilic…

A: Plasma membrane marks the boundary of the cell thereby separating inside and outside of the cell.…

Q: What structure is usually found in the cell membrane? Is if a. micelle, b. clathrate, c. monolayer…

A: What structure is usually found in the cell membrane is asked.

Q: What is the difference between the rough and smooth endoplasmic reticulum?

A: Disclaimer: As there are many questions which have been posted, only the first question will be…

Q: When viewed by electron microscopy, the lipid bilayer is often described as looking like a railroad…

A: High-resolution images of molecular and non-molecular structures are obtained by Electron…

Q: Why does presence of cholesterol enhance the membrane fluidity?

A: Introduction - There is multiple factors that result in membrane Fluidity. First, the mosaic…

Q: Which of the following statements about the membrane bilayer is FALSE?

A: Introduction: Lipids are the constituents of membrane structure and regulate the membrane…

Q: if something needed to enter the cell and couldn't go through the phospholipid bilayer, how else…

A: The cytoplasmic membrane is a good permeability barrier because it is semi-permeable and envelops…

Q: Why don’t proteins turn around in biological membraneslike revolving doors?

A: Membranes : It is the thin layer that forms the outer boundary of a living cell or of an internal…

Q: What is the Direction of net flux Through Lipid Bilayer?

A: The direction of flux will depend on the concentration gradient.

Q: Why do cell and organelles membranes need to have its components be amphipathic?

A: The plasma membrane is the border of the cell and the organelles also have their own membranes that…

Q: Do all proteins associated with membranes span the membrane from one side to another?

A: Membrane proteins are common proteins which are part of interact with biological membranes. These…

Q: What role do polysaccharides play in the structure of cell walls?

A: Polysaccharides are an important class of biological polymers. It usually performed one of two…

Q: Why is the cell membrane negatively charged?

A: The plasma membrane or cell membrane is the membrane found in all cells that separates the interior…

Q: Define The domain structure of cytoplasmic dynein.

A: Dynein is a motor protein that requires ATP as a source of energy to mediate intracellular…

Q: What is the function of Peripheral membrane proteins?

A: Membrane proteins that are bound to integral proteins or phospholipids are located on the outside…

Q: Define endosomes,

A: Endosomes are membrane-bound vesicles, formed via a complex family of processes known as…

Q: What is the name of the process by which worn-out organelles are digested by lysosomes?

A: Lysosomes are present in eukaryotic cells and are absent in prokaryotic cells. They are…

Q: Would substances be able to pass through the plasma membrane if the phospholipid tails of the plasma…

A: Transport of molecules become difficult across plasma membrane if the phospholipid tails of plasma…

Q: Why Lysosomes Are Know As “the Cleaners” Of The Cell Waste?

A: The cytoplasm and other organelles are contained within the cell membrane. Allows needed elements to…

Q: What property allows O2 and CO2 to cross a lipid bilayerwithout the aid of membrane proteins?

A: Phospholipid bilayer consists of two contiguous layers of phospholipids by the hydrophobic tails…

Q: phospholipids regulate the flow of hydrophilic molecules? How does the bilayer layer regulate the…

A: PLASMA MEMBRANE:- It is also known as cell membrane or cytoplasmic membrane and this structure is…

Q: Polypeptides which are normally synthesized in the endoplasmic reticulum are about 20 amino acids…

A: Proteins are synthesized by the ribosomes present on the endoplasmic reticulum, thus they are known…

Q: What is the difference between smooth and rough endoplasmic reticulum?

A: The endoplasmic reticulum is found in eukaryotic cells that are responsible for the synthesis,…

Q: Why do these nuclear pores have to be larger in diameter than the channels in the cell’s plasma…

A: The cells are the primary unit of life. Based on the number of cells an organism may be prokaryotic…

Q: How does the arrangement of phospholipid molecules in the cell membrane give the membrane selective…

A: The cell membrane is selectively permeable

Q: Why do most molecules require the assistance of proteins to cross the cellular membrane? What…

A: The cellular membrane is a semi-permeable lipid bilayer. The lipids found in the membrane are…

Q: if the membrane composition of the golgi in a cell is incorrect, what could have happened?

A: If the composition of membrane in Golgi body is incorrect then the cell is similar to the cell with…

Q: Order following for rate of diffusion through a synthetic lipid bilayer. Explain your order.…

A: Transport across the plasma membrane is a highly regulative process that is dependent on both the…

Q: What are the functional significance of the fluidity of a cell membrane?

A: Cell membrane is also known as plasma membrane or cytoplasmic membrane.  It is a biological membrane…

Q: What causes the decreased pH in the endosomes and lysosome?

A: Endosomes and lysosomes are the two types of organelles present in cell. A cell is the basic…

Q: What does lysosome contain?

A: Lysosomes are membrane bound cell organelles present in eukaryotic animal cells.They are spherical…

Q: Glycolipids are synthesized in golgi where they remain on the lumenal half of the lipid bilayer.

A: Answer: GLYCOLIPIDS = These are the compounds which are chemically derived from carbohydrate and…

Q: Why water cannot readily cross the plasma membrane?

A: Plasma membrane show fluid properties, i.e. Can show motion.

Q: How many layers of phospholipids make up the plasma membrane?

A: The plasma membrane, which is known as the cell membrane, is the membrane found in all cells that…

Q: Why do water and small, electrically charged molecules move easily through pores in the plasma…

A: Introduction  The membrane that divides the interior of the cell from the external environment is…

Q: What components of the plasma membrane might this molecule interact with?

A: Molecule is atorvastatin It is a  drug that specifically inhibits the enzyme HMG-CoA reductase and…

Q: Why is it unnecessary for our cells to have a cell wall? What might happen if the lysosomes inside…

A: Cell can be described as the basic, structural and functional unit of life or living organisms. Cell…

Q: How do temperature and lipid composition affect the fluidity of the cell membrane?

A: Membrane fluidity refers to the viscosity of the lipid bilayer of the cell membrane. Viscosity can…

Q: What is a cytoplasmic protein?

A: Protein molecule is a polymer of amino acids connected together via a peptide bond. A protein…

Q: Where in the cell can ribosomes be found? What is the main biological function of ribosomes?

A: The cell consists of small granules called ribosomes. These are ribonucleoprotein particles. In…

Q: What are apoproteins? The enzyme used to catalyze the diffusion of a lipid from the outer leaflet to…

A: Lipoproteins are the conjugate proteins. It has two parts core and surface:  Core has;…

Q: What function does the Golgi apparatus perform?

A: All known species have a basic structural, functional, and biological unit called a cell. The cell…

Q: Why are plasma membranes arranged as a bilayer rather than a monolayer?

A: The plasma membrane is the membrane found in all cells that separate the interior of the cell from…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.