Passive Transport Quiz

Phospholipids have a -

• nonpolar head and a nonpolar tail.

• polar head and a polar tail.

• nonpolar head and a polar tail.

• polar head and a nonpolar tail.

The process by which living things try to keep their internal conditions relatively stable (or balanced) is called - 

• homeostasis.

• cellular respiration.

• osmosis.

• diffusion.

Tags

NGSS.HS-LS1-3

A cell has a salt concentration of 0.7 NaCl.  It was placed in a beaker containing pure water.  The water is considered a - 

• hypotonic solution.

• isotonic solution.

• myotonic solution.

• hypertonic solution.

Tags

NGSS.HS-LS1-3

Susan sprayed perfume in one corner of the room.  John, who sits across the room and is allergic to perfume, soon begins to sneeze.  Perfume travels across the room by - 

• active transport.

• osmosis.

• endocytosis. 

• diffusion.

The plasma membrane of a cell consists of - 

• a phospholipid bilayer

• lipid molecules that are between two carbohydrate layers.

• protein molecules arranged in two layers.

• protein molecules that have polar and nonpolar tails.

Which of these best explains why a freshwater  aquarium would be a dangerous habitat for saltwater (ocean) fish?  

• The cells of the saltwater fish would gain too much water.

• The cells of the saltwater fish would absorb too much acid.

• The cells of the saltwater fish would produce too much protein.

• The cells of the saltwater fish would use too much energy.

Tags

NGSS.HS-LS1-3

Which statement best describes the role of the cell membrane in this model?

• The cell membrane removes solutes from the environment.

• The cell membrane allows solutes to enter the cell, which causes the cell to shrink.

• The cell membrane is an impermeable barrier that prevents water from entering the cell.

• The cell membrane allows water to enter and leave the cell.

A cell with 90% water is placed in a solution with 10% water. The solution is -

• hypertonic.

• hypotonic.

• isotonic.

A cell with 75% water is placed in a solution with 20% water. The solution is -

• hypertonic.

• hypotonic.

• isotonic.

A cell with 90% sugar is placed in a solution with 10% sugar. The solution is -

• hypertonic.

• hypotonic.

• isotonic.

Tags

NGSS.HS-LS1-3