Membrane Transport Quiz

Identify letter "A" on the diagram below

• Carbohydrate
• Cholesterol
• Phospholipid Bilayer
• Protein

Identify letter "B" on the diagram below

• Carbohydrate
• Phospholipid Bilayer
• Protein

Identify letter "F" on the diagram below

• Carbohydrate
• Cholesterol
• Hydrophilic Head
• Hydrophobic Tail
• Protein

Identify letter "G" on the diagram below

• Carbohydrate
• Cholesterol
• Hydrophilic Head
• Hydrophobic Tail
• Protein

The difference in the concentration of a substance from one location to another is called the __________________________________.

• phospholipid bilayer
• marker protein
• concentration gradient
• osmosis

Movement of WATER molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration is called __________________________________.

• phospholipid bilayer
• marker protein
• concentration gradient
• osmosis

The movement of substances across a membrane, against their concentration gradient, requiring the use of energy, and usually involving the use of proteins is called __________________________________.

• diffusion
• facilitated diffusion
• osmosis
• active transport

The passive transport of molecules across membranes, from high to low concentration, through protein channels. is called __________________________________.

• diffusion
• facilitated diffusion
• osmosis
• active transport

Diffusion is the movement of a substance.....

• through a lipid bilayer.
• only in water.
• from an area of low concentration to an area of high concentration.
• from an area of high concentration to an area of low concentration.

Molecules that are too large to be moved through the cell membrane can be transported INTO the cell by......

• osmosis
• exocytosis
• endocytosis
• diffusion