Which 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

Q: Which of the statements about diffusion are true? Select all that apply.     A. Solutes diffuse from…

A: The movement of particles is dependent on multiple factors including the charge on particle,…

Q: Electrical gradients ( potential; charges) exists on cell membranes because in part when the cell is…

A: Membrane potential is the difference in the electric potential (gradient of ion concentrations)…

Q: The transition temperature of a membrane bilayer is determined directly or indirectly  a. the…

A: The transition temperature of a membrane is influenced by multiple factors, including lipid…

Q: A red blood cell placed in hypertonic solution would __________ because it __________ water. a.…

A: Cell denotes the fundamental structural as well as functional unit of life. Schleiden and Schwann…

Q: Osmosis is water movement across a semipermeable membrane. Which of the following is true about…

A: Osmosis is the type of diffusion that involves the passive movement of water through the…

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: The following describes the arrangement of the phospholipid tails within the cell membrane: O a. One…

A: The cell membrane is the outer membrane of most of the organism’s cells and it separates the outer…

Q: What features of a membrane are major contributors to its selectivepermeability?a. phospholipid…

A: The plasma membrane is the outer covering in the cells with no cell wall or any other outer covering…

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: From silk fibrin we can say: a. Is material mostly heat and bacteria resistant. b. Constitutes…

A: Silk fibrin is a type of fibrous protein that is primarily found in silk produced by certain species…

Q: Decide whether each of the following molecules will pass through a lipid bilayer. If the molecule…

A: Passing through the liquid bilayer depends on the chemical properties and size of the molecules. The…

Q: the fluid mosaic model of membrane structure a. the phospholipids exist in a bulayer formation b.…

A: Introduction  The cell membrane, also known as the plasma membrane, is a thin, semi-permeable layer…

Q: The following describes the arrangement of the phospholipid heads within the cell membrane: Oa. One…

A: Singer and Nicolson  in 1972, described the phospholipid bi-layered structure of a cell i.e., the…

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: 3. Many medications are absorbed into the blood through the cells lining the stomach and small…

A: Lipid Bilayer: A lipid bilayer (also known as a phospholipid bilayer) is a polar membrane made up of…

Q: Identify which lipids are important components of the cellular membrane. SELECT ALL THAT APPLY…

A: Cell membrane is best depicted by fluid mosaic model. This model of plasma membrane was given by…

Q: he difference between a gap junction and plasmodesmata is… Select one: a. Gap junctions are formed…

A: Animal cells communicate by using thier extracellular space which is connected other cell through…

Q: Facilitated diffusion differs from active transport in thatfacilitated diffusiona. expends no ATP.b.…

A: The cell membrane is semipermeable and allows only certain molecules transportation from in and out…

Q: The cytoplasm would be considered ___________________ relative to the extracellular fluid.   a.…

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

Q: A student uses iodine to visualize cells under the light microscope. Iodine stains starch deep blue…

A: A student uses iodine to visualize cells under the light microscope. Iodine stains starch deep blue…

Q: Cholesterol is a _____ substance found in the ______                 A. protein; Golgi apparatus.…

A: Cell is the basic structural and functional unit of life.

Q: Lipids form the barriers surrounding various compartments within an organism. Which property of…

A: Lipids are a diverse group of biomolecules that serve many important functions in living organisms.…

Q: Which of the following best describes the lipid aggregates known as liposomes? A. They contain a…

A: Liposomes are microscopic spheres composed of phospholipids that form a bilayer membrane, similar to…

Q: If a cell is in an isotonic environment, then a. the cell will gain water and burst. b. no water…

A: The movement of solvent from a region of higher concentration to a region of lower concentration…

Q: Which of the following are essential components of cell membrane? a. Cholesterol b.Phospholipids…

A: D - ALL OF THE ABOVE  • Cholestrol is essential component of cell membrane , which are the…

Q: The membrane is constantly moving mainly due to what types of lipid movement? A. Lateral diffusion…

A: According to the fluid mosaic model, the cell membrane is made up of a fluid lipid bilayer that is…

Q: Which of the following statements regarding the selective permeability of the lipid bilayer is…

A: The plasma or cell membrane contains a bimolecular phospholipid layer with polar heads and non polar…

Q: Except for O, which is large and charged and b. which is large and polar, all of the following…

A: Only polar or hydrophilic molecules interact with polar or hydrophilic molecules. Non-polar or…

Q: Integral proteins associate with the membrane through A. covalent attachment to lipids. B. covalent…

A: Cell membrane or plasma membrane is a dynamic, fluid structure which acts as a shield and channel…

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: A solution of 150 mM NaCl is considered isotonic to cells because: A. Causes cells to shrink B.…

A: Diffusion refers to the movement of a substance from a region of higher concentration to a region of…

Q: A bilyer arrangement of phospholipids in the cell membrane increases the strength of ..........…

A: Lipids are macromolecules that are mainly water-insoluble. These molecules are made up of carbon,…

Q: When you jump in the bath, water does not run around all your cells and directly into your body.…

A: These are water channels,  are channel proteins from a larger family of major intrinsic proteins…

Q: ______cannot diffuse across a lipid bilayer. a. Water molecules c. Ions b. Gases d. Nonpolar…

A: A lipid bilayer surrounds the cells.

Q: The presence of cholesterol regulates the in animal cells.

A: Dietary cholesterol levels have a strong influence on the quantity of cholesterol produced in the…

Q: Which of the following are part of adherens junctions? a. Anchor proteins b. Actin filament c.…

A: In animals, cell junctions (also known as intercellular bridges) are multiprotein complexes that…

Q: The interface formed between two hydrophobic molecules in the context of the aqueous environment of…

A: Different bonds are present in a biological system. They are generally subdivided into 2…

Q: Why can't ions like sodium (Na+) or potassium (K+) diffuse directly through the phospholipid…

A: The cell membrane is a quasi-fluid structure, meaning it provides stability to the cell and holds…