Movement of Substances Across a Plasma Membrane -Application

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell

• The cell manually sorts through all materials

• Certain things can enter while others cannot

• Only certain cells can interact with the cell.

Which transport does not require energy?

• Passive transport

• Active transport

Cell has the same concentration of water inside & outside the cell

• isotonic

• hypertonic

• hypotonic

• osmosis

Special proteins help move particles, but NO energy is needed. This is..

• facilitated diffusion

• exocytosis

• active transport

• equilibrium

What cause of this happen?

• The plant gets to much water

• Excessive of fertilizers

• The plant cannot adapt to their climate

• Insufficient nutrients

What is the conclusion that can be made about the cell?

• The plant cell is turgid

• The plant cell sap is hypertonic

• The plant cell sap loses mineral ions through osmosis

• The plant cell sap has a lower osmotic pressure

In active transport, carrier proteins…

• Move substances across the cell membrane without the use of ATP

• Move small molecules through the cell membrane by osmosis

• Move substances from a low concentration to a high concentration through the use of energy

• Move from low to high concentration by diffusion

"Water Loving"

• Hydrophobic

• Hydroelectric

• Hydrophilic

• Hydroloric

What does the "fluid mosaic model" mean about the cell membrane?

• It can dissolve into fluid.

• It looks like a flexible pattern.

• The cell is mostly made of mosaic molecules.

• Somebody else should name these things.

Most of the cell membrane is made of...

• Lipids

• Proteins

• Carbs

• Nucleic acids