Biology 101 membrane structure and function

A phospholipid has two parts. What are they called?

• Hydrophilic Head, Hydrophobic Tail

• Hydrophobic Head, Hydrophilic Tail

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

___________ form the two layers of the cell membrane. 

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol

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NGSS.MS-LS1-2

Controls the passage of materials inside and outside of the cell.

• Cellmembrane

• Cytoplasm

• Cell wall

• Endoplasmic reticulum

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NGSS.MS-LS1-2

Which of the following is a function of the cell membrane?

• breaks down lipids, carbohydrates, and proteins from foods

• stores water, salt, proteins, and carbohydrates

• synthesizes proteins and other macromolecules

• regulates the movement of materials into and out of the cell

Tags

NGSS.MS-LS1-2

Which of the following molecules pass easily through the cell membrane, requiring little extra help or energy? Select all that apply.

• sodium

• glucose

• oxygen

• carbon dioxide

Which of the following molecules don't pass easily through the cell membrane, requiring extra help or input of energy?

• sodium

• glucose

• oxygen

• carbon dioxide

The ability to allow only certain molecules into or out of the cell.

• Semipermeability

• Permeability

• Impermeability

• Unpermeability

Which of the following is the function of the cell membrane? Select all that apply.

• Provides instructions to the cell and other organelles.

• Regulates compounds in and out fo the cell.

• Allows cells to communicate and interact with other cells.

• Breaks down wastes and other compounds.

• Protects the cell from its environment.

Tags

NGSS.MS-LS1-2

Which of the following are embedded in the phospholipid bilayer and help substances pass through?

• lipids

• proteins

• cholesterol

• carbohydrates