Unit 2: Lesson 4 - The Cell Membrane

What does A represent?

• phospholipid

• carbohydrate

• cholesterol

• glycoprotein

What does A1 represent?*

• hydrophilic head

• hydrophilic tail

• hydrophobic tail

• hydrophobic head

What does A2 represent?

• hydrophobic head

• hydrophobic tail

• hydrophilic head

• hydrophilic tail

What does G represent?

• phospholipid

• cholesterol

• protein (channel for transport)

•  

  carbohydrate

What are the cholesterol's jobs?

• stability

• cell recognition

• movement of large molecules

• cell communication

What are the two main components of the cell membrane?

• phospholipid bilayer

• embedded proteins

• hypotonic solution

• sugar, salt

What part of the membrane is red?

(above the membrane is the outside of the cell and under is the inside)

• phospholipids

• glucose molecules

• oxygen molecules

• channel protein

What part of the membrane is yellow?

(above the membrane is the outside of the cell and under is the inside)

• channel protein

• oxygen molecules

• phospholipids

• glucose molecules

Slect the true statemnets

• Membranes are fluid and flexible

• Membranes are strong and stiff

• Membranes can self repair

• Membranes are the first part of a cell to die

the core of nearly all cell membranes is a double-layered sheet called a(an)

• lipid bilayer

• cytoplasm

• eukaryotic organnelles

• prokaryotic organelles