Which Best Describes a Selectively Permeable Plasma Membrane

Which phrase best describes the property of selective permeability. Phospholipids contribute to the function of the cell membrane which is selective permeability.

Cells Part 1 Cell Structure Quiz Quizizz

If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells.

. The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. They must go through specific channels or pores in the. The tails of the phospholipid which face other tails of phospholipids in the interior of the membrane.

The reason that the phospholipids do this is because. The solubility theory of membrane permeability simply describes that a membrane can only be freely permeable to substances that can dissolve in it. Plasma membranes are selectively permeable or semi-permeable meaning that only certain molecules can pass through them.

It is non-permeable to all substances. C permeable to large charged molecules but not to small uncharged molecules. Answer- Plasma membrane called a selectively permeable membrane because it regulates the movement of substances from within to outside of the cell.

Which statement best describes the plasma membrane. B It is freely permeable to all substances. A It is a highly impermeable phospholipid bilayer membrane embedded with proteins which does not confer to the fluid mosaic model.

Randomly Porous Systematically Solid Highly dignified Selectively permeable Simply Irresistable Very lignified Indiscriminately permeable Completely impenetrable. Which statement best describes the plasma membrane. C It is selectively permeable to certain substances.

This was the most basic theory posed to explain. A permeable to small but not to large substances. The phospholipid has a polar and non-polar section.

The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Selectively describes the way in which things is selected some may of may not be selected. 2 The plasma membrane is a semipermeable membrane.

3 Any solute will tend to diffuse. Permeable refers to whether something is allowed or can go through the plasma membrane in this example. The membrane proteins select the molecules and allow them to pass in and out of the cell and thus makes the membrane selective permeable.

Not all molecules are free to diffuse. The concentration of solutes differs on the two sides of a cell membrane that are permeable only to water. Thus D is the answer that corresponds most strongly to this question whereas the others do not.

For example water ions glucose and carbon dioxide may need to be imported or exported from the cell depending on its metabolic activity. It is freely permeable to all substances. This means that the plasma membrane allows the entry of some substances while preventing the movement of some other substance.

A selectively permeable membrane allows all molecules to cross. Water oxygen and carbon dioxide can easily travel through the membrane. Sodium potassium and polar molecules cannot pass through the membrane.

A Its rigidity does not allow materials to enter the cell. Question 2 1 point Which of the following best describes the plasma membrane of plant cells. Which describes the movement of materials across the cell membrane.

Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. Which bestdescribes what will happen to the animal cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.

B It is a selectively permeable phospholipid bilayer membrane embedded with proteins which confers to the fluid mosaic model. This means that it is. As the plasma membrane acts as a mechanical barrier the.

D permeable to small molecules except water. Which best signals that equilibrium has been reached across a selectively permeable membrane. It is mainly composed of phospholipid bilayer structure with embedded proteins.

The answer I think is D. What is the pressure that develops in a system due to osmosis. It allows hydrophobic molecules and small polar molecules diffuse through the lipid layer but does not allow ions and large polar molecules cannot diffuse through the membrane.

What is the diffusion of water across a differentially permeable membrane. It is selectively permeable to certain substances C. B only permeable to cholesterol.

Cell membrane or plasma membrane is the outer covering of all cells but in plant cells it is present below the cell wall. Which BEST describes the plasma membrane of all living things. D It is nonpermeable to substances outside of the cell.

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