Cellular Transport Review

What are the functions of the cell membrane? (choose all that apply)

• monitor what enters/exits the cell

• cell-to-cell communcation

• helps maintain structure/shape of cell

• repel water

Tags

NGSS.MS-LS1-2

In a phospholipid, the fatty acid tails are ___ ; whereas, the phosphate head is ___

• hydrophilic; hydrophobic

• hydrophobic; hydrophilic

• hydrophobic; hydrophobic

• hydrophilic; hydrophilic

Tags

NGSS.MS-PS1-1

What can move directly through phospholipids in the cell membrane?

• Allow small and non-polar molecules to pass through

• large molecules

• ions (charged molecules)

• polar molecules

What is the composition of the cell membrane?

• Lipids, proteins, and carbohydrates

• nucleic acid and lipids

• Nucleic acids and proteins

• Proteins and phosphates

Tags

NGSS.MS-LS1-2

What is the function of glycoproteins in the cell membrane?

• Attracts water

• Repels water

• Involved in cell-to-cell recognition

• Help transport certain materials across the cell membrane

Tags

NGSS.MS-LS1-2

Which type of transport moves molecules towards equilibrium? (choose all that apply)

• Active transport

• Osmosis

• Simple diffusion

• Facilitated diffusion

Which type of transport allows large, charged or polar molecules to pass through integral proteins?

• Active transport

• Passive transport

• Simple diffusion

• Facilitated diffusion

What is the term for the concentration of solutes being equal on both sides of the membrane?

• Equilibrium

• Concentration gradient

• Active transport

• Passive transport

In Diagram B, which way will the molecules move?

• Upward

• Downward

• Left

• move up and down; the cell is in equilibrium

Tags

NGSS.MS-LS1-2

In which direction will solute molecules move in simple diffusion?

• High --> Low

• Low --> High

• They will not move