What are the 2 basic molecules that make up a cell membrane?

What are the 2 basic molecules that make up 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).

What 2 things make up the cell membrane quizlet?

With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Define hydrophobic and hydrophilic.

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).

What is the basic structure of the plasma membrane?

The fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments. In the case of the plasma membrane, these compartments are the inside and the outside of the cell.

What does a cell membrane look like?

The membrane does look a bit like a sandwich (Figure 1). A plasma membrane’s principal components are lipids (phospholipids and cholesterol), proteins, and carbohydrates attached to some of the lipids and proteins. A phospholipid is a molecule consisting of glycerol, two fatty acids, and a phosphate-linked head group.

What are the 4 main components of the plasma membrane?

Key Points

• The principal components of the plasma membrane are lipids ( phospholipids and cholesterol), proteins, and carbohydrates.
• The plasma membrane protects intracellular components from the extracellular environment.

What are the major component of the plasma membrane?

The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.

What are the components of a cell membrane?

The most widely accepted model of the cell membrane was given by S.J. Singer and Garth L. Nicolson in 1972, popularly known as the fluid mosaic model. The main components that make up all cell membranes are lipids, proteins, and carbohydrates.

What are the lipids of the cell membrane?

Membrane lipids are of the following types: 1 Phospholipid: Major component of the cell membrane forming a bilayer structure. The hydrophilic (water-loving) head of… 2 Cholesterol: Another lipid component of animal cell membranes that are selectively dispersed between phospholipid… More …

What are the functions of the plasma membrane?

The cell membrane is also known as the plasma membrane. It is the outermost covering of animal cells. It is a semi-permeable membrane composed of lipids and proteins. The main functions of the cell membrane include: Protecting the integrity of the interior cell. Providing support and maintaining the shape of the cell.

Which is the most widely accepted model of the cell membrane?

The most widely accepted model of the cell membrane was given by S.J. Singer and Garth L. Nicolson in 1972, popularly known as the fluid mosaic model. Cell Membrane Structure Diagram Structure and Composition: What is the Cell Membrane Made Of The main components that make up all cell membranes are lipids, proteins, and carbohydrates.