8.3/8.4 Exam Review

What is passive transport?

• The movement of materials across the cell membrane using cellular energy.

• The movement of materials across the cell membrane without using cellular energy.

• The movement of materials within the cell using cellular energy.

• The movement of materials within the cell without using cellular energy.

What is diffusion?

• The process by which molecules of a substance move from areas of low concentration to areas of high concentration.

• The process by which molecules of a substance move from areas of high concentration to areas of lower concentration.

• The process by which molecules of a substance move randomly without any concentration gradient.

• The process by which molecules of a substance move only within the cell.

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-4

I.S.-Isotonic Solutions-The concentration of solute molecules is the same inside and outside the cell. What happens to the PRESSURE?

• Water molecules will move equally in both directions.

• Cell remains the same and has no change.

• No change in osmotic pressure.

H.S.-Hypertonic Solution: The solution has a higher solute concentration than solute concentration inside the cell. What happens to WATER molecules?

• Water molecules will move out of the cell to equal out the concentration levels. (Trying to dilute the solutes outside.)

• The cell will shrink due to loss of water molecules from the cell.

• Loss of osmotic pressure.

H.S.-Hypertonic Solution: The solution has a higher solute concentration than solute concentration inside the cell. What happens to the CELL?

• The cell will shrink due to loss of water molecules from the cell.

• The cell will swell due to gain of water molecules into the cell.

• The cell will remain the same size.

• The cell will burst due to excessive water intake.

Tags

NGSS.HS-LS1-3

H.S.-Hypotonic Solutions-The solution has a lower solute concentration than the cell. What will happen to the WATER molecules?

• Water molecules will move into the cell to equal out the concentration levels. (Trying to dilute the solutes inside the cell.)

• The cell will swell due to gain of water molecules into the cell.

• Increase in osmotic pressure.

What happens to a cell if placed in a hypotonic solution?

• The cell will swell due to gain of water molecules into the cell.

• The cell will shrink due to loss of water molecules from the cell.

• The cell will remain the same size with no change in water content.

A vesicle forms that large molecules, clumps of SOLID FOOD, large droplets of LIQUIDS or complete CELLS can be surrounded by and then forms a vacuole to pull the item into the cell.

• Active Transport

• Pinocytosis

• Phagocytosis

• Endocytosis

A vesicle forms around large molecules of SOLID FOOD and then pulls the item into the cell.

• Active Transport

• Pinocytosis

• Phagocytosis

• Endocytosis

A vesicle forms around large molecules of LARGE DROPLETS OF LIQUID and then pulls the item into the cell.

• Active Transport

• Pinocytosis

• Phagocytosis

• Endocytosis