Table of Contents
What is the basic structure of a cell membrane quizlet?
Phospholipids make up the basic structure of a cell membrane. A single phospholipid molecule has two different ends: a head and a tail. The head end contains a phosphate group and is hydrophilic. This means that it likes or is attracted to water molecules.
What is the basic structure of a cell membrane Chapter 7?
Key Concept: What is the basic structure of a cell membrane? The core of nearly all cell membranes is a double-layered sheet called a lipid bilayer. Most cell membranes contain protein molecules that run through the lipid bilayer, and carbohydrate molecules are attached to these proteins.
Which best describes the structure of a cell membrane?
Answer: The stateent “It is a lipid bilayer with the hydrophobic area pointing inward, and the hydrophilic area facing outward” describes correctly the structure of the cell membrane.
Which of the following correctly describes the structural organization of the cell membrane?
chemistry and cells
| Question | Answer |
|---|---|
| which of the following correctly describes the structural organization of the cell membrane? | a bilayer of phospholipid with loosely bound protein molecules are embedded and can move |
| endoplasmic reticulum is best described as | a network of interconected membranes. |
What is in a cell membrane?
Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol). They can also attach to the second type of protein, called the intrinsic proteins.
Which structures are responsible for the fluidity of a cell membrane?
Because of its hydrocarbon ring structure (see Figure 2.9), cholesterol plays a distinct role in determining membrane fluidity. Cholesterol molecules insert into the bilayer with their polar hydroxyl groups close to the hydrophilic head groups of the phospholipids (Figure 2.47).
What is the basic structure of a cell membrane?
Cell membranes are, at their most basic, composed of a phospholipid bilayer with some surface proteins embedded around the surface. Plasma membranes contain phospholipids, cholesterol, proteins and carbohydrates that are arrayed in regular, repeating rows to form a highly plastic surface for the cell. Cell membranes are not solid structures.
What makes up the surface of a plasma membrane?
Cell membranes are, at their most basic, composed of a phospholipid bilayer with some surface proteins embedded around the surface. Plasma membranes contain phospholipids, cholesterol, proteins and carbohydrates that are arrayed in regular, repeating rows to form a highly plastic surface for the cell.
Which is the most studied cell membrane in the world?
The plasma membrane is the most thoroughly studied of all cell membranes, and it is largely through investigations of the plasma membrane that our current concepts of membrane structure have evolved. The plasma membranes of mammalian red blood cells (erythrocytes) have been particularly useful as a model for studies of membrane structure.
Is the cell membrane fluid like or hydrophobic?
The cell membrane is a structure that is fluid-like in movement. The cell membrane has hydrophilic surfaces but is hydrophobic internally. The cell membrane contains external structures which help it identify other cells and be recognized as well. The cell membrane consists of all 4 categories of macromolecules.