Chapter 5 Smartbook

Question 1

Which of the following is defining features of biological membranes?

Answer 1

The presence of two phospholipids sheets

Question 2

The lipid bilayer that forms the corner of all cell membrane is composed of

Answer 2

Phospholipids

Question 3

Which part of the membrane protein is found in contact with the interior of lipid bilayer

Answer 3

Nonpolar segment

Question 4

which of the following best describes the proteins which are inserted into the lipid bilayer of the plasma membrane

Answer 4

Integral proteins

Question 5

which of the following are typical components of biological membranes

Answer 5

Lipids and proteins

Question 6

Identify the four main components of all your eukaryotic membranes

Answer 6

Lipid bilayer
Interior protein, net work
TransMembrane proteins
Cell surface markers

Question 7

Which of the following makes up the bilayer of every cell membrane

Answer 7

Phospholipids

Question 8

what are the main functions of membranes Phospholipid bilayer

Answer 8

To impose a barrier to permeability

Question 9

And what describes the function of transmembrane proteins?

Answer 9

They can transport molecules across the
Membrane
We can transmit information into the cell

Question 10

All functions of protein network typically found on the interior of plasma membrane is

Answer 10

They reinforce the membrane shape
The anchor, key membrane proteins to specific site

Question 11

Proteins, which are embedded in the membrane are called_____ membrane proteins while proteins, which are attached to the surface of the membrane are called_____ proteins

Answer 11

Integral
Peripheral

Question 12

Which of the following is not one of the four main components of all plasma membranes
Lipid bilayer
Interior protein network
Cell surface markers
Extracellular matrix
Transmembrane proteins

Answer 12

Extracellular matrix

Question 13

The endoplasmic reticulum, add sugar molecules to membrane proteins and lipids to form different varieties of

Answer 13

Glycoproteins and glycolipids proteins

Question 14

All cell membranes contain a phospholipid_____ which provides a flexible matrix in a barrier to______

Answer 14

Bilayer
Permeability

Question 15

What is the component of the plasma membrane is responsible for transport of materials and communication across the membrane

Answer 15

Protein

Question 16

What concerning the organization of the plasma membrane

Answer 16

Lipids can exist in either ordered or disordered phase
The plasma membrane is not homogeneous and has area with lipids and protein

Question 17

Membranes are structurally supported by intracellular______ that reinforce the membranes shape

Answer 17

Protein

Question 18

What describes the protein which are inserted into the lipid bilayer of the plasma membrane

Answer 18

Integral protein

Question 19

What Type of microscope can provide images that clearly show both layer of membrane lipid bilayer

Answer 19

Electron microscopes

Question 20

What are lipids rafts in cellular membranes heavily enriched in

Answer 20

Sphingolipids and cholesterol