Osmosis and Facilitated Diffusion

What is the primary challenge cells face regarding molecule transport?

• Molecule transport across the membrane

• Energy production

• DNA replication

• Protein synthesis

What assists the movement of glucose and ions into the cell?

• Carbohydrates

• Membrane proteins

• Nucleic acids

• Lipids

Which protein specifically facilitates the movement of water across the cell membrane?

• Collagen

• Insulin

• Aquaporin

• Hemoglobin

Which of the following is NOT a function of the proteins involved in facilitated diffusion?

• Synthesizing new molecules

• Assisting water movement

• Moving glucose

• Transporting ions

What type of transport is facilitated diffusion classified as?

• Tertiary transport

• Secondary transport

• Passive transport

• Active transport

One way to move more water into a cell, would be

• producing more ATP to push it through the membrane

• move salt out of the cell so that water potential in the cell goes up

• add more channel proteins (aquaporins) to the cell membrane to facilitate osmosis

• drink coffee, the caffeine will increase water movement into cells