Q: Cell membranes are composed of a lipid bilayer. How does the type of lipid bilayer affect its…
A: The cell membrane is composed of a phospholipid bilayer.
Q: The tails of the phospholipids of the plasma membrane are composed of _____ and are _______? a.…
A: Plasma membrane : This layer is made up of lipid and proteins Phospholipids : They consists of…
Q: 1.4 Which of the following statements about transmembrane proteins is true? A) they often are…
A: Proteins that are associated with the cell membrane are called as membrane proteins. The two types…
Q: Differentiate between materials that can and cannot diffuse through the lipid bilayer
A: Water-soluble materials do not diffuse through lipid bilayer while lipid-soluble materials diffuse…
Q: Which of these is not a function of the lipid bilayer? A. Changes the temperature B. Provides a…
A: The lipid bilayer is a universal component of all cell membranes. Its role is critical because its…
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: ________ form specialized sites on the cell surface that allow cells to recognize each other
A: Answer is option (b) Carbohydrates. They form specialized sites on the cell surface that allows…
Q: Which of the following is true about phospholipid bilayers? a. The hydrophobic head faces the cell…
A: The phospholipid bilayer consists of two layers of phospholipids, with a hydrophobic, or…
Q: If free phospholipids were swirled into water, they would a. dissolve O b. form a lipid bilayer…
A: Phospholipid is a kind of lipid. It is made up of glyerol, fatty acid and choline phosphate. It is…
Q: Which of the named factors might induce bending of membranes? Select one: a. Cylindrically shaped…
A: C- Conically shaped proteins induce bending of membranes The options A,B,D do not induce bending of…
Q: In a typical eukaryotic plasma membrane, _____. A. lipids can move and diffuse through the bilayer…
A: The plasma membrane, also known as the cell membrane, is a membrane found in all cells that…
Q: Explain the following statement: The structure of all biomembranes depends on the chemical…
A: Introduction: The biological membrane is made of phospholipids. These phospholipids are arranged in…
Q: describe how phospholipids and proteins interact in
A: The cell is the basic fundamental unit. It comprises several components that play a major role in…
Q: You make a phospholipid bilayer with short saturated hydro carbon tails. You measure the…
A: INTRODUCTION Phospholipid bilayer This is a thin layer contain two layers of lipids. Seen in cell…
Q: Collagen represents which level of protein organization? a. Secondary b. All of the options are…
A: In the body, proper functioning of healthy joints and skin elasticity or stretchiness occurs as a…
Q: Explain why charged molecules pass more easily through biological membranes than through a pure…
A: Lipid bilayer is composed of two layers of lipids with hydrophilic head and hydrophobic tail. A…
Q: The cells of plant seeds store oils in the form of droplets enclosed by membranes. Unlike the…
A: Some living structures have monolayers whereas some of them have bilayers. There are cell walls that…
Q: state. At low temperatures, lipid bilayers are in the a. closed b. So C. Open С. O d. Ld
A: The lipid bilayer is composed of two lipid layers arranged in such a fashion that their hydrophobic…
Q: . Cholesterol is an integral part of plasma membranes.Based on its structure, where is it found in…
A: The cell membrane (otherwise called the plasma membrane or cytoplasmic membrane) is a natural…
Q: Which of the following is true about lipid bilayers? A. They are self-forming. B. They are…
A: Lipid bilayers are bimembrane covering or also called as the plasma membrane of the cell. These are…
Q: Which of the following statements about membrane phospholipids is/are true? O a) They are oriented…
A: All living matters are made of cells, which can be the most fundamental and crucial unit. All of…
Q: membrane proteins transverse the entire lipid bilayer. a. Integral b. Peripheral c. Lipid anchored…
A: Proteins that are part of the membrane are of several types: peripheral and integral. The peripheral…
Q: Why are phospholipids the main lipid component of membranes? A. these molecules can interact with…
A: Introduction: Phospholipids are the main component of the cell membranes. They form the lipid…
Q: ______cannot diffuse across a lipid bilayer. a. Water molecules c. Ions b. Gases d. Nonpolar…
A: A lipid bilayer surrounds the cells.
Q: Which One is NOT TRUE about membranes? a. Membranes rich in fatty acids containing one or more…
A: Saturated fatty acids have single bonds in the hydrocarbon chain. A double bond increases fluidity.…
Q: The cells making up the epithelial linings of organs that contain liquid, e.g., the bladder and…
A: Epithelial tissues act as the thin protective layer of cells which covers the surface of the body as…
Q: Positively charged molecules are often more easily endocytosed by cells than negatively charged…
A: Endocytosis is a cellular process in which substances are brought into the cell. The material to be…
Q: Cholesterol is an integral part of plasma membranes. Based on its structure, where is it found in…
A: Cholesterol, is a waxy, lipid composed of four fused carbon rings which is naturally produced and…
Q: Which macromolecule is NOT digested by the lysosome? A. Proteins B. Nucleic acids C. Polysaccharides…
A: A lysosome is an organelle found in eukaryotic cells. Its function is to the digestion of…
Q: Which of the following statements is true of membrane proteins? a) They are suspended on the…
A: Introduction: Membrane proteins, as the name suggests, are proteins that either interacts with the…
Q: At temperatures that are much lower than a lipid bilayer's melting point, adding cholesterol will…
A: Cholesterol act as bidirectional regulator for membrane. At high temperature it regulates lipid…
Q: In general terms, what would you expect to be different about the permeability of a lipid bilayer…
A: Cell membrane of a cell is a bilayer of lipid molecules that keeps the inside environment of cell…
Q: The movement of sucrose molecules across the plasma membrane takes place through Select one: O a.…
A: Sucrose is a macromolecule that is composed of glucose and fructose monosaccharides. They are made…
Q: Define the following terms: a. lipid bilayer b. fluid mosaic model c. membrane fluidity d. flippase…
A: The lipid bilayer is a biological membrane comprising of lipid molecules in two layers, and each…
Q: Consider the following diagram of the cell membrane. Which of the statements is NOT true regarding…
A: The fluid mosaic model of the cell membrane describes the plasma membrane to be a mosaic of…
Q: It seems paradoxical that a lipid bilayer can be fluid yet asymmetrical. Explain.
A: Introduction :- The lipid bilayer (also known as the phospholipid bilayer) is a thin polar membrane…
Q: Explain how the lipid bilayer modulate the activity of proteins. Give 2 examples.
A: Lipid bilayer is a bilayer of different types of phospholipids. Plasma membrane is a lipid bilayer…
Q: Which one of the statements given below is INCORRECT? a) The three common types of membrane lipids…
A: Lipids are the prime component of cell membranes. Lipid composition has an impact on the physical…
Q: cannot diffuse across a lipid bilayer. a. Water molecules b. Gases c. lons d. Nonpolar molecules
A: The cell membrane is a structure which protects the cell and acts as a barrier and transports the…
Q: A) Briefly describe the basic structure of phospholipids and explain how they can provide an…
A: The cell membrane of a cell is Made up of phospholipid bilateral which helps in transportation of…
Q: We have seen that biological membranes have both lipid and protein components. How do these two…
A: Biological membrane is a dynamic fluid structure and forms the external boundary of the cells. It…
Q: The ff. are phospholipids, except: OA. plasmalogen O B. lecithin O c. cephalin O D. choline
A: Phospholipids are a subclass of lipids that have two hydrophobic "tails" made of fatty acids…
Q: What kinds of molecules pass through a cell membrane most easily? A. large and hydrophobic B.small…
A: The movement of molecules through the plasma membrane depends on their size and the polarity of the…
Q: The lipid bilayer is formed so that water dissolves the phospholipids. O fatty acids are saturated.…
A: The cells of a living organism contain different types of macromolecules including- carbohydrates,…
Q: The following are functions of lipids EXCEPT A. Isolate cellular components from its environment B.…
A: Cell membranes, also known as plasma membranes, are complex assemblages of lipids and proteins that…
Q: Which of the following choice/s will best complete the statement below: For bilayers that have a…
A: Saturated fat have all single bonds. Unsaturated fat have double bonds.
Q: Phospholipids spontaneously form a bilayer in an aqueous solution. Why do the heads of the…
A: The basic material for studying biological membranes has been red blood cells. Lipid and protein are…
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- Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECMWhich of the following is true about lipid bilayers? A. They are self-forming. B. They are dynamic. C. They are fluid. D. They are permeable. A, C, D only A, B, C only B, C, D only A, B, C, D______cannot diffuse across a lipid bilayer. a. Water molecules c. Ions b. Gases d. Nonpolar molecules
- Which of these is not a function of the lipid bilayer? A. Changes the temperature B. Provides a flexible matrix C. Imposes a barrier to permeability_____________ membrane proteins transverse the entire lipid bilayer. a. Integral b. Peripheral c. Lipid anchored d. GlycerophospholipidWhich of the following are the main structural components of the lipid bilayer of all cell membranes? A. Phospholipids B. Waxes C. Triglycerides D. Steroids
- Positively charged molecules are often more easily endocytosed by cells than negatively charged molecules. Which of these BEST explains this observation? A. The hydrocarbon tails of membrane lipids are hydrophilic. B. The hydrocarbon tails of membrane lipids are hydrophobic. C. The phosphate group of membrane lipids are positively charged. D. The phosphate group of membrane lipids are negatively charged.Phospholipids are important components of A. bacterial cell walls B. ribosomes C. carbohydrates D. steroid lipids E. lipid dropletsDecide whether each of the following molecules will pass through a lipid bilayer. If the molecule will pass through, type yes it will. If the molecule will not pass through, type no it will not. a. Glucose b. Glycerol C.water D. Oxygen gas
- Which of the following molecules is not capable of forming lipid bilayers? a. glycolipids b. wax esters c. phospholipids d. cerebrosidesWhich of the following are essential components of cell membrane? a. Cholesterol b.Phospholipids c.Long chain polyunsaturated fatty acids d.All of the aboveIdentify which lipids are important components of the cellular membrane. SELECT ALL THAT APPLY A. Phospholipids B. Bile Salts C. Fatty Acids D. Cholesterol
