Cell Transport

Osmosis

This movement of water from an area of high concentration to an area of low concentration. This form of transport does not require energy.

Phagocytosis

This method of transport occurs when the cell membrane uses energy to engulf solid particles and pull it into the cell.

Pinocytosis

This method of transport occurs when the cell membrane uses energy to engulf liquid particles and pull it into the cell.

Active Transport

Active transport moves molecules from an area of low to high concentration.

Passive Transport

Passive transport moves molecules from an area of high to low concentration.

Cell Membrane

All cells have a cell membrane. They control what enters and exists in the cell to maintain an internal balance called homeostasis. Proteins are embedded in the membrane.

Lipid Bilayer

Two layers of phospholipids.

Phosphate

The head is polar and hydrophilic.

Fatty Acid

The tails are non-polar and hydrophobic.

Hydrophilic

Water Loving

Hydrophobic

Fear of Water

Diffusion

The process by which molecules spread from areas of high concentration, to low concentration. No energy is required. When the molecules are even throughout a space - it is called equilibrium. Small and unchanged particles.

Facilitated Diffusion

Molecules that cannot directly diffuse across the membrane pass through special protiens. No energy required. Ions and large molecules. Proteins are specific for for each ion/molecule.

Endocytosis

An immune cell uses energy to engulf viruses and destroys it in order to keep you from getting sick.

Exocytosis

The Golgi apparatus works to package and process proteins to be sent out of the cell in a vesicle.

Hypertonic

If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink.

Isotonic

In an isotonic environment, there is no net water movement, so there is no change in the size of the cell.

Hypotonic

When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.

Simple Diffusion and Facilitated Diffusion are both examples of what type of transport?

Passive Transport

What is a similarity between simple diffusion and facilitated diffusion?

They both move with the concentration gradient and don’t need energy (ATP).

What does active transport require?

Energy or ATP

What are the different types of Endocytosis?

Phagocytosis and Pinocytosis

Hypotonic causes cells to..

Swell

Hypertonic causes cells to..

Shrink