Cell Transport Reading and Quiz

According to the text, what is the cell membrane also known as?

• The cell wall

• The plasma membrane

• The cytoplasm

• The nucleus envelope

What analogy is used in the text to describe the cell membrane?

• A gate

• A window

• A castle wall

• A shield

Tags

NGSS.MS-LS1-2

What is the term used to describe the cell's ability to maintain a stable internal environment?

• Metabolism

• Catabolism

• Homeostasis

• Osmosis

What are the two parts of a phospholipid molecule?

• A polar head that is hydrophobic and a fatty acid tail that is hydrophilic

• A polar head that is hydrophilic and a fatty acid tail that is hydrophobic

• A polar head that is hydrophilic and a glycerol backbone

• A glycerol backbone and a fatty acid tail that is hydrophobic

Why do the hydrophilic heads of phospholipids face the inside and outside of the cell?

• Because they are water-fearing

• Because they are attracted to the cell's nucleus

• Because they are water-loving

• Because they are repelled by water

What do large molecules need to pass through the plasma membrane?

• They do not need any assistance

• They need to be broken down into smaller molecules first

• They need transport proteins

• They need to dissolve in water