Passive Transport

Passive transport occurs across which organelle?

• nucleus

• ribosome

• plasma membrane

• Golgi body

Which of these is NOT a type of passive diffusion?

• active

• simple

• facilitated

• osmosis

Passive transport always moves substances from ____________ concentration to ____________ concentration

• low, low

• low, high

• high, high

• high, low

Passive transports requires the cell to use energy to move the substances

• True

• False

Which is true ONLY for simple diffusion?

• Transports water only

• Moves substances through transport proteins in the plasma membrane

• Small molecules move straight through the membrane

• Moves substances from high to low concentration

Which is true ONLY for osmosis?

• Transports water only

• Moves substances through transport proteins in the plasma membrane

• Small molecules move straight through the membrane

• Moves substances from high to low concentration

Which is true ONLY for facilitated diffusion?

• Transports water only

• Moves substances through transport proteins in the plasma membrane

• Small molecules move straight through the membrane

• Moves substances from high to low concentration

Passive transport moves substances .......

• up the concentration gradient

• across the concentration gradient

• down the concentration gradient

• under the concentration gradient