The following describes the arrangement of the phospholipid heads within the cell membrane: Oa. One row faces the extracellular fluid Ob. One row faces the intracellular fluid O c. They face each other in the interior of the cell membrane Od. A and B Oe. All of the Above

Q: Which of the following would pass most easily through a cell's membrane by simple diffusion?

A: The correct option is small non-polar molecules.

Q: After sweating through a long marathon, a runner decides to replenish their body fluids by drinking…

A: An athlete is bound to sweat a lot during strenuous exercise like running a marathon.  The sweat…

Q: The following is the function of the cell membrane proteins: O a. Channels O b. Receptors O c.…

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

Q: A protein wilth a domain inside the hydrophobic plasma membrane and a hydrophilic domain inside of…

A: Introduction Membrane proteins:- These are common proteins that are part of, or interact with,…

Q: Match the following terms with the appropriate type of movement across a cell diffusion active…

A: Molecules are transported across the plasma membrane through mechanisms such as passive transport…

Q: Some antibiotics act as carriers that bind an ion on one side of a membrane, diffuse through the…

A: The fluidity of lipid bilayer membranes increase with an increase in temperature. So, a decrease in…

Q: The rate of diffusion through a membrane increases if....(Select ALL that apply.) the phospholipid…

A: Ans. Diffusion, which is fueled by molecule's innate desire to spread out and reach an equilibrium…

Q: the following are the hydrophobic regions of a selectively permeable cell membrane: O a Phospholipid…

A: Cell membrane is made of phospholipids majorly. These phospholipids consists of double layered…

Q: What is true of the proteins illustrated in the diagram below? Select all statements that are true.…

A: • Protein A is known as integral protein or intrensic protein. Protein B is known as peripheral…

Q: According to the fluid mosaic model, integral membrane proteins Select one: O A. undergo frequent…

A: A model developed by two scientists namely Singer and Nicolson who explained that cell membrane…

Q: In diffusion, molecules move Select one: from wither high or low concentration. against a…

A: Membrane transport is defined as the process where the solutes such as small molecules or ions move…

Q: What type of transport is shown in the figure below? Na+ Na* Na* ATP ADP K K+ + Pi Osmosis O…

A: Active transport occurs against the concentration gradient which mediated by carrier protein.

Q: Under which circumstance is the Goldman equation equivalent to the Nernst equation? O when the cell…

A: All living organisms are made up of cells. The cells are the basic structural and functional unit of…

Q: Water soluble substances diffuse through the following regions of the selectively permeable cell…

A: Semi-permeable membranes make up cell membranes. It enables some molecules to pass across the…

Q: In which direction will WATER molecules (the small blue spheres) move across the membrane in the…

A: Osmosis: The spontaneous net movement or diffusion of solvent molecules through a selectively…

Q: I. Passive transport permits the solute to move in elther direclion. II. The net moverment of solute…

A: The molecules and other nutrients are transported across the cell membrane by various mechanisms ,…

Q: Which of the following is FALSE regarding membrane transport? O A cell can add proteins into its…

A: In cell biology, membrane transport refers to the accumulation of processes that control the passage…

Q: Explain the behavior of water molecules in the isotonic solution.

A: The concentration of solute in the aqueous environment of cells can be used to define it. Hypertonic…

Q: Which of the following best describes a hypotonic solution? There is a higher concentration of…

A: Hypotonic means solute concentration is lower than solvent in a solution.  When in a solution…

Q: Zero order kinetics refers to: A Rate is dependent of concentration or amount of chemical B Rate of…

A: 1. Zero-order absorption occurs when a substance is taken at a nearly constant rate. A fixed amount…

Q: According to the fluid mosaic model, integral membrane proteins Select one: O A. none of the choices…

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

Q: Match the letter in the diagram with the label: (You can/may use them once or more than once, or not…

A: Mitochondria is a cell organelle that is found in eukaryotic cells. It is a double membrane bound…

Q: Dialysis bags were filled with various concentrations of starch and placed into beakers with 15%…

A: The solvent moves from high solvent concentration to low solvent concentration across a semi…

Q: The tails of the phospholipids of the plasma membrane are composed of O A. phosphate groups;…

A: The hydrophobic, or “water-fearing,” a part of a phospholipid consists of its long, nonionic fatty…

Q: Which of the following is always at the same concentration inside and outside the cell? a. potassium…

A: Answer is option b .) water.

Q: Which of the following is false in regards to charged ions, non-lipid soluble proteins, and…

A: Non-lipid soluble proteins are repelled by the lipid bilayer. Charged ions and non-lipid soluble…

Q: Which of the following is/are possible functions of proteins? O Receptors O Enzymes O Channels All…

A: Proteins are important nutrients for the human body. they may be one of the building blocks of body…

Q: Which molecules diffuse the easiest across the plasma membrane without the aid of a…

A: The plasma membrane of the cell is the controlling element that regulate the movement of different…

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 в с D Select all peripheral proteins. A В

A: A is the peripheral proteins.

Q: Discuss the five ways substances can pass across the cell membrane. Give examples of each

A: The cell membrane is made of a lipid bilayer with proteins embedded in it. Lipids found in bilayer…

Q: Summarize the process in which the sodium-potassium pump transports solutes across the plasma…

A: Active transport is the process that requires energy for  pumping of molecules and ions across…

Q: The following pumps 3 sodium ions out while pumping 2 potassium ions into the cell: O a Na-K-ATPase…

A: The correct option is: Na-K-ATPase Protein Pump

Q: Which of the following will decrease diffusion rate (a.k.a. rate of flux) of a particle across the…

A: Introduction The transfer of a molecule from a high concentration area to a low concentration area…

Q: Which of the following structures is primarily involved in the detoxification of many poisons and…

A: Cell is main body level of organization which comprises of :-  1) Cell wall ( in animals but absent…

Q: A section of a cell membrane Is shown in the diagram below. CELL MEMBRANE Low Concentration of…

A: Osmosis is defined as solvent movement across a semipermeable membrane from a low concentration to a…

Q: Water travels from a region of hypotonic fluid to a region of hypertonic fluid across a selectively…

A: A solution with a lower solute concentration as compared to a solvent is called a hypotonic…

Q: A membrane simulator is shown below. Watch the video clip in order to answer the question. Diffusion…

A: Diffusion is very important process of nature where substances present in excess amount will move…

Q: Which of the following statements best describes what happens when a pacterial cell is placed in a…

A: The capacity of a solvent to induce cells to shrink or swell is referred to as tonicity. A…

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.