Passive Transport Quiz

Phospholipids have a -

• nonpolar head and a nonpolar tail.

• polar head and a polar tail.

• 
  polar head and a nonpolar tail.

• nonpolar head and a polar tail.

A is pointing to the

• polar hydrophilic heads

• nonpolar hydrophobic heads

• polar hydrophilic tails

• nonpolar hydrophobic tails

Why did the red blood cell shrink?

• It was placed in a hypotonic solution

• It was placed in a hypertonic solution

• It was placed in an isotonic solution

• The oxygen left the cell

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

The diagram shows three animal cells. Pairs of red circles represent oxygen molecules. Between which two cells is there the highest oxygen concentration gradient?

• One and Two

• Two and Three

• One and Three

The smallest unit of a cell membrane that forms a bi-layer along with embedded proteins.

• phospholipids

• carbohydrate chains

• amino acids

• phosphates groups

Which part of the phospholipid bilayer adds strength to the PM and transports molecules across?

• Cholesterol

• Phospholipid

• Carbohydrate

• Protein

Which way will the water molecules move during osmosis Hint those  mickey mouse molecules are water not solutes?

• Out of the cell, so the cell shrinks.
• Out of the cell, so the cell swells.
• Into the cell, so the cell shrinks.
• Into the cell, so the cell swells.

Letter G

• Protein

• Carbohydrate Chain

• Phospholipid Bi-layer

• Cholesterol

• Phosphate Heads

Letter I

• Protein

• Carbohydrate Chain

• Phospholipid Bi-layer

• Cholesterol

• Phosphate Heads