Practice Quiz_Cell Membranes_P2

What is a scientific term for a molecule that has a polar (hydrophilic) region and a nonpolar (hydrophobic) region?

• Bihydrophicity

• Dipolarity

• Amphipathic

• Hydrophilic

What is the scientific term for a substance that can dissolve a solute to create a solution?

• Solvent

• Solute

• Solution

Which of the following macromolecules is NOT part of the cell membrane?

• Lipids
• Carbohydrates
• Proteins
• Nucleic Acids

A balloon filled with a water sugar solution allows water but not sugar to pass through its membrane. The balloon contains a 5% sugar solution. The beaker contains a 10% sugar solution. Which statement the movement of water?

• Water will enter the balloon and it will swell

• Water will leave the balloon and it will shrink

• Sugar will diffuse into the balloon from the the surrounding solution.

• Sugar will leave balloon and diffuse into the surrounding solution.

What macromolecule makes up the channels found in the cell membrane?

• Lipids

• Carbohydrates

• Nucleic Acids

• Proteins

You bought some fresh flowers from the store but they started to look wilted. Once you placed them in a vase full of water, the leaves and stems began to swell again. What process is responsible for this swelling?

• Photosynthesis

• Osmosis

• Diffusion

• Active Transport

What term would describe this type of receptor? 

• Intracellular
• Extracellular

What is the scientific term for a substance that can be dissolved by a solvent to create a solution?

• Solvent

• Solute

• Solution

During the gummy bear lab, a gummy bear placed in pure water increased in size. What does this indicate about the type of solution the gummy bear was in?

• The solution was hypertonic, causing water to leave the gummy bear.

• The solution was isotonic, so there was no net movement of water.

• The solution was hypotonic, causing water to enter the gummy bear.

• The type of solution teh gummy bear is placed in does not matter.

A phospholipid has 2 parts. What are they called? 

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