What is the best description of the phospholipid bilayer of the cell membrane?

What is the best description of the phospholipid bilayer of the cell membrane?

Phospholipid BilayerThe phospholipid bilayer consists of two adjacent sheets of phospholipids, arranged tail to tail. The hydrophobic tails associate with one another, forming the interior of the membrane. The polar heads contact the fluid inside and outside of the cell.

What does the phospholipid bilayer do in a cell membrane?

Phospholipid bilayers are critical components of cell membranes. The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell. However, an important function of the cell membrane is to allow selective passage of certain substances into and out of cells.

What are the components of the phospholipid bilayer of the cell membrane?

Phospholipid Bilayer The plasma membrane is composed mainly of phospholipids, which consist of fatty acids and alcohol. The phospholipids in the plasma membrane are arranged in two layers, called a phospholipid bilayer, with a hydrophobic, or water-hating, interior and a hydrophilic, or water-loving, exterior.

What are 2 things that make up the phospholipid bilayer cell membrane?

There are two important parts of a phospholipid: the head and the two tails. The head is a phosphate molecule that is attracted to water (hydrophilic). The two tails are made up of fatty acids (chains of carbon atoms) that aren’t compatible with, or repel, water (hydrophobic).

Which of the following best explains how the phospholipid bilayer?

Which of the following best explains how the phospholipid bilayer of a transport vesicle contributes to cellular functions? The phospholipid bilayer allows the vesicle to fuse with the Golgi apparatus and the plasma membrane, allowing the exocytosis of proteins.

Which of the following best describes how phospholipids are arranged in the bilayer structure of the cell membrane?

Two layers of phospholipids where the outer layer has the hydrophilic heads facing toward the outside of the cell and the inner layer have the hydrophobic tails facing toward the inside of the cell.

What is the function of the phospholipid bilayer quizlet?

Serves as barrier between the living cell and outside environment; composed of phospholipid bilayer containing proteins and other components.

What property of phospholipids makes them important in cell membranes?

The correct answer is (D) They have both a hydrophobic and a hydrophilic ends.

How does the phospholipid bilayer work?

Phospholipid bilayers create a selectively permeable barrier to the movement of ions and molecules important for cellular function.

Why is it more appropriate to describe membranes as Semifluid?

Select the reasons why it is more appropriate to describe membranes as semifluid. Molecules move laterally within the membrane leaflet and phospholipids usually move in two dimensions. At a high temperature, it makes the membrane less fluid; at a low temperature, it makes the membrane more fluid.

Which of the following best describes a process that occurs within the Golgi complex?

Which of the following best describes a process that occurs within the Golgi complex? The Golgi complex is a membrane-bound structure to which some proteins are moved from the rough endoplasmic reticulum, where they are enzymatically modified before being sent to a cellular membrane.

Which of the following best explains why a cell’s plasma membrane is composed of two layers of?

Which of the following best explains why a cell’s plasma membrane is composed of two layers of phospholipids rather than just a single layer? Having two oppositely oriented layers of phospholipids allows only the hydrophilic heads to interact with water inside and outside of the cell.

What is surrounded by 2 phospholipid bilayers?

A two-layer membrane called the phospholipid bilayer surrounds many types of plant and animal cells. The cell membrane is comprised mostly of lipids and proteins.

Which is a component of a phospholipid?

Phospholipids are composed of a number of components including two fatty acids, a glycerol unit, a phosphate group, and a polar molecule.

Is phospholipid hydrophobic or hydrophilic?

A phospholipid is an amphipathic molecule which means it has both a hydrophobic and a hydrophilic component. A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails.

What is the structure of a phospholipid molecule?

The structure of the phospholipid molecule generally consists of two hydrophobic fatty acid “tails” and a hydrophilic “head” consisting of a phosphate group. The two components are usually joined together by a glycerol molecule.