Regents Review Cell Transport and Biochemistry

Molecules using simple diffusion move from 

• high to low concentrations 

• low to high concentrations 

• no concentrations  

• both concentrations  

The process where only water is allowed to pass through the cell membrane from a high to low concentration.

• meiosis

• respiration

• diffusion

• osmosis

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

• Active transport

• Passive transport

• Diffusion

• Osmosis

Cells transport material across a cell membrane without using energy (high to low concentration)

• Passive transport

• Concentration

• Endocytosis

• Active Transport

Active Transport ​ (a)   energy and particles move from ​ (b)   concentration areas to ​ (c)   concentration areas.

• low

• doesn't require

• requires

• high

Match the following vocabulary terms and definitions.

• Hypotonic

• Low concentration; the solution has less solutes than the cell, causing water to move into the cell and out of the solution.

• Hypertonic

• High concentration; the solution has more solutes than the cell, causing water to move out of the cell and into the solution.

• Isotonic

• Same concentration; the solution and cell have equal concentration of solutes (particles), so water moves equally between the cell and solution.

Match the following.

• Hypertonic Solution

• The cell has no change in mass.

• Hypotonic Solution

• The cell loses mass.

• Isotonic Solution

• The cell gains mass.

What kind of transport does not require energy?

• Active 

• Vacuole 

• Passive 

• Na/K Pump 

Which of the following is the best example of osmosis? 

• NA/K Pump 

• Water moving though the cell membrane 

• Kidneys 

• Photosynthesis 

Osmosis is the movement of... 

• salt 

• sugar 

• water 

• none of these