Topic 8 Membrane Transport Quiz BIOL15B

What is the purpose of a cell plasma membrane?

• Cell division

• Cell communication

• Homeostasis

• Energy production

What is the process by which molecules move from high concentration to low concentration?

• Endocytosis

• Diffusion

• Active transport

• Osmosis

What is the term for the movement of water to equalize the concentration of solutes?

• Facilitated diffusion

• Osmosis

• Active transport

• Exocytosis

Which type of transport moves molecules from regions of lower concentration to regions of higher concentration and requires energy?

• Primary active transport

• Facilitated diffusion

• Simple diffusion

• Passive transport

What is the source of energy involved in primary active transport of molecules across a biological membrane?

• Nuclear energy

• Electrical energy

• Chemical energy stored in ATP

• Light energy

What maintains cell size and shape in animal cells through the actions of protein pumps that actively move ions in and out of the cell?

• Nucleus

• Vacuole

• Cell wall

• Plasma membrane

What is the term for the combination of lipids and proteins that makes up cell membranes and results in selective permeability?

• Protein sheath

• Cholesterol layer

• Glycoprotein matrix

• Phospholipid bilayer

What is the net direction of movement of molecules via diffusion in a concentration gradient?

• In a circular pattern

• From low concentration to high concentration

• No net movement

• From high concentration to low concentration

What maintains cell size and shape in plants, fungi, and bacteria?

• Cell wall

• Nucleus

• Plasma membrane

• Vacuole

What uses the energy stored in an electrochemical gradient for the movement of molecules across a biological membrane?

• Facilitated diffusion

• Secondary active transport

• Primary active transport

• Simple diffusion