Passive Transport and Osmosis

Osmosis is the movement of _____ across a membrane.

• food

• energy

• oxygen

• water

Equilibrium?

• a large  amount of substance on  side of the cell and a small amount on the other side

• a small  amount of substance on  side of the cell and a large amount on the otherside

• equal amount of substance on either side of the membrane  

• no particles on either side of the a cell membrane

Which way will the water molecules move during osmosis?

• Out of the cell, so the cell shrinks.

• Out of the cell, so the cell swells.

• Into the cell, so the cell shrinks.

• Into the cell, so the cell swells.

Why are water molecules able to enter the egg but NOT the sugar molecules?

• Sugar molecules are too heavy.

• The holes of the semi-permeable membrane were too small to let sugar molecules through.

• Semi-permeable membranes need energy.

• Semi-permeable membranes must be under pressure to work.

The movement of water through a semi-permeable membrane is called ___________.

• active transport

• respiration

• osmosis

Tags

NGSS.MS-LS2-1

Which of the following best describes osmosis?

• Movement of solutes from high to low concentration

• Movement of water from low to high solute concentration

• Movement of water from high to low solute concentration

• Movement of solutes using energy

What is osmosis?

• The diffusion of ions through a cell membrane.

• The active transport of water molecules.

• The movement of water through a selectively permeable membrane from a high to low concentration.

• The process by which plants absorb nutrients from the soil.

Which of the following statements about passive transport is true?

• It requires cellular energy

• It moves substances against their concentration gradient

• It includes processes like diffusion and osmosis

• It is faster than active transport

Why is osmosis important for cells?

• It allows cells to move against the concentration gradient.

• It provides the energy required for cellular functions.

• It helps in the removal of waste products from the cell.

• It regulates the water content within a cell to maintain homeostasis.

Tags

NGSS.MS-LS1-2

What is passive transport?

• The movement of substances against the concentration gradient, requiring energy.

• The movement of substances across cell membranes without the need for energy.

• The process by which cells actively transport ions into the mitochondria.

• The use of cellular energy to move substances into the cell through endocytosis.