An alpha-helix transmembrane protein has 35 amino acid residues embedded in a lipid bilayer membrane. What is the thickness of the biological membrane? 70  Å 52.5  Å 126  Å 46.7 Å

Q: What is the role of cholesterol in the cell membrane? It converts cis bonds of fatty acids to trans.…

A: The plasma membrane separates the cell from the external environment. It has highly selective…

Q: Which of the following statements about a typical plasma membrane is correct? The hydrophilic…

A: Plasma membrane, also known as cell membrane is found in all cells. It separates the interior of the…

Q: Match each membrane component with the correct description of structure or function. Answer choices…

A: Membrane It refers to a thin layer that forms the boundary of a cell. It is also called the plasma…

Q: According to the fluid mosaic model of cell membranes, which of the following is a true statement…

A: Cell membrane / plasma membrane is the membrane present on the outer side of cell that basically…

Q: Sketch out a cross section of a cell membrane showing the a proposed transporter involved in either…

A: Permeability is the fundamental property of the cell membrane which is essential for the maintenance…

Q: Describe the lipid bilayer structure of a cell membrane. What are the roles of proteins in membrane…

A: Plasma membrane is the outer boundary of the cell. It is selective permeable in nature that is it…

Q: Eukaryotic membrane fluidity can be increased by which of the following mechanisms? cell bio…

A: The field of biology known as cell biology, sometimes known as cellular biology or cytology, focuses…

Q: Proteins attached to the outer half of the plasma membrane bilayer are usually attached by…

A: Biological macromolecules are those large molecules that are essential to carry out important…

Q: Which one of the these primary protein structures is most likely to form an alpha helix that would…

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Q: You make a phospholipid bilayer with short, unsaturated hydrocarbon tails. You measure the…

A: A phospholipid bilayer integrated with proteins forms the plasma membrane. It provides a durable…

Q: Below is the skeletal formula of a molecule typically found in cell membranes. What type of molecule…

A: The biological membrane that surrounds a living cell is called the cell membrane. The structure of…

Q: Although both faces of a biomembrane are composed of the same general types of macromolecules,…

A: The cell membrane is a double layer of lipids and proteins that surrounds a cell. It separates the…

Q: Which of the following lipid components of the eukaryotic plasma membrane would be associated with…

A: Membrane fluidity is the viscosity of the lipid bilayer of a cell membrane. Lipid packing can bring…

Q: The approximate thickness of the phospholipid bilayer is 10A 1 micro M 50A 150A 1nM

A: There are four classes of biological macromolecules - nucleic acid, proteins, lipids and…

Q: Biologists use the fluid mosaic model to descfibe membrane structure. Which statements about the…

A: The structure of the functional cell membrane is explained by Singer and Nicolson’s mosaic model.…

Q: Explain how the amphipathic (containing both hydrophobic and hydrophilic sides) protein (shown;…

A: An amphipathic protein is one that has both hydrophobic (water-repelling) and hydrophilic…

Q: Describe the structure of a biological membrane as proposed by the fluid mosaic model, Indicate the…

A: Biological membrane is important for a cell as it is selectively permeable and allows only few…

Q: what purpose does the plasma membrane’s hydrophobic interior serve?

A: Introduction The plasma membrane, also known as the cell membrane, is the membrane found in all…

Q: Part a) Would a single alpha helix be more stable in a aqueous solution or a membrane. Explain why.…

A: The secondary structure of proteins is referred to as the regular, recurring arrangements of…

Q: Eukaryotic membrane fluidity can be decreased by which of the following mechanisms? increasing the…

A: The cell membrane is the barrier between the cell and its surroundings. This membrane is referred to…

Q: Why is each component of the plasma membrane important? What might happen, be specific, if one of…

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: Explain how the following affect membrane fluidity: – Level of phospholipid tail saturation – Level…

A: The thin, living, elastic, semipermeable lipoproteinaceous membrane that is present around the cell…

Q: The plasma membrane of P. bursaria is about 56%56% protein and 40%40% phospholipid by weight. How…

A: Lipoproteins are complex lipids made up of cholesteryl ester and triacylglycerol encased in an…

Q: The figure below illustrates a portion of a cell membrane. X denotes a membrane-spanning protein…

A: The plasma membrain of the cell is composed of phospholipid bilayer that is amphipathic (both…

Q: Which of the following molecules may diffuse freely through a phospholipid bilayer? (select two…

A: Alanine: An amino acid having a short hydrophobic side chain is called alanine. This lipid bilayer…

Q: Integral membrane proteins are anchored in lipid bilayers. Which of the following groups of amino…

A: Integral membrane proteins are a type of protein that is embedded inside and spans the lipid bilayer…

Q: Which diagram below represents the transmembrane protein whose membrane topology is shown on the…

A: The transmembrane proteins are present in the cell membrane. These are embedded in the membrane and…

Q: the structure of the plasma membrane is best described as: O two layers of phospholipids stacked on…

A: Plasma membrane is the outer covering of cell. It is responsible for transporting the materials…

Q: Fat soluble substance diffuse through the following regions of the selectively permeable cell…

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Q: From the following list, choose TWO molecules capable of freely diffusing across the plasma membrane…

A: Plasma membrane surrounds the protoplasmic material and forms a boundary.  Plasma membrane is…

Q: How does freeze fracture microscopy work and how has this technique improved membrane protein…

A: Cell membranes are made up of phospholipids and associated or inserted proteins. Membrane proteins…

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.