Cell Transport and Plasma Membrane

Where will the water go?

• Into the cell

• Out of the cell

• Equally in & out - it's isotonic

• There is no water

What do the brown structures represent?

• Phospholipids

• Cholesterol Proteins

• Channel Proteins 

• Cytoskeleton Filaments

Which of the following is the best example of osmosis? 

• NA/K Pump 

• Water moving though the cell membrane 

• Kidneys 

• Photosynthesis 

Cells use energy to move materials across a membrane (low to high concentration).

• Active transport

• Passive transport

• Diffusion

• Osmosis

Osmosis is a process that

• involves movement of particles from saturated solutions

• moves water molecules from an area of higher concentration to an area of lower concentration

• involves the active transport of dissolved solids

• continues until the medium on each side of the membrane has become hypertonic

What are two types of passive transport?

• endo and exocytosis 

• in a minute and later

• hydrophobic and hydrophillic 

• osmosis and diffusion

Particle of movement from an area of higher concentration to an area of lower concentration.

• Active transport

• Passive transport

Based on these results, which statement correctly predicts what will happen to red blood cells when they are placed in a beaker containing a water solution in which the salt concentration is much higher than the salt concentration in the red blood cells?

• The red blood cells will absorb water and increase in size

• The red blood cells will lose water and decrease in size.

• The red blood cells will first absorb water, then lose water and maintain their normal size.

• The red blood cells will first lose water, then absorb water, and finally double in size.

What type of solution is this cell in?

• Isotonic

• Hypertonic

• Hypotonic

• diffused

What is embedded in the phospholipid bilayer?

• Proteins

• Salt

• Water

• Worms