Unit 1: Quiz 1 - Plasma Membrane

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail 
• Hydrophobic Head, Hydrophilic Tail 

Tags

NGSS.MS-PS1-1

A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 

• phospholipid 
• Carbohydrate
• Cholesterol 
• Protein 

Tags

NGSS.MS-LS1-2

Describes the arrangement of the cell membrane as bendable and made of many parts. 

• The Fluid Mosaic Model 
• The Major Mobility Model 
• The Crazy Cell Model
• The Maze Model

Tags

NGSS.MS-LS1-2

___________ allow cells to recognize each other and act like ID tags. 

• Carbohydrates 
• Proteins
• Phospholipids 
• Cholesterol

___________ strengthens and stabilizes the cell membrane.

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol

___________ have 2 functions in the cell membrane.
1.) They act like gatekeepers, only let certain things in. 
2.) Enzyme receptors embedded in the membrane.

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol

Tags

NGSS.MS-LS1-2

Something is ___________ ____________
when some molecules can cross the membrane while others cannot. 

• Selectively (or Semi) Permeable 
• Totally Transparent
• Liquid Licorice 
• Heavily Patrolled 

Tags

CCSS.RI.11-12.3

CCSS.RI.11-12.5

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

In what direction do particles naturally diffuse?

• Up the concentration gradient
• Down the concentration gradient
• Across the concentration gradient
• Over the river and through the woods

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

Tags

NGSS.MS-LS1-2

Hydrophilic portion of cell membrane?

• A
• C
• D
• E 

Tags

NGSS.MS-LS1-2