Cell Parts

A phospholipid has 2 parts. Which of the following best describes their molecular relationship with water?

• Hydrophilic Head, Hydrophobic Tail

• Hydrophobic Head, Hydrophilic Tail

Describes the arrangement of the cell membrane as semi-fluid and made of a range of molecules.

• The Fluid Mosaic Model

• The Major Mobility Model

• The Fluid Cell Membrane Model

• The Mosaic Membrane Model

___________ play a role in cellular recognition and immune response. They act like an ID tag for the cell.

• Proteins

• Glycoproteins

• Phospholipids

• Cholesterol

___________ strengthens and stabilizes the cell membrane. Increasing stability and increasing fluidity dependant on environmental conditions.

• Carbohydrates

• Proteins

• Phospholipids

• Cholesterol

It forms a boundary between the inside of the cell and the outside of the cell. 

• Cell Membrane
• Lipid Cleric Layer
• Membrane Gate
• Protein Receptors 

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot
• The cell manually sorts through all materials
• Only certain cells can interact with the cell.

What are the layers of a cell membrane composed of?

• A single layer of lipids
• A double layer of phospholipids
• A double layer of proteins
• A double layer of proteins and nucleic acids

The term to describe a cell membrane that allows some substances to pass, but not others

• Bilayer

• Semi conservative

• Selectively permeable

• Phospholipid

This is the part of the bilayer that is attracted to water (because it is polar)

• phosphate head

• fatty acid tails

• cholesterol center

• phospholipid bilayer

This is the part of the bilayer that repulses water molecules (because it is non-polar)

• phosphate head

• fatty acid tails

• cholesterol center

• phospholipid bilayer