Cell Transport and Plasma Membrane

Osmosis is the movement of... 

• salt 

• sugar 

• water 

• none of these 

What happens to a cell placed in a hypotonic solution?

• A. It swells

• B. It shrinks

• C. It remains the same

• D. It bursts

Which structure is most directly responsible for maintaining homeostasis in all cells?

• chloroplast

• cell membrane

• centriole

• cell wall

Water will move into a cell that is placed in a(n) _____ solution.

• osmotic

• hypertonic

• hypotonic

• isotonic

Molecules using simple diffusion move from 

• high to low concentrations 

• low to high concentrations 

• no concentrations  

• both concentrations  

What is this image?

• cell membrane

• mitochondria

• golgi apparatus

• endoplasmic reticulum

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail 

• Hydrophobic Head, Hydrophilic Tail 

After examining this diagram showing the concentration of water inside and outside of the cell, identify the tonicity of the solution.

• hypertonic

• hypotonic

• isotonic

Proteins and polysaccharides that are too large to move into a cell through diffusion or active transport move into cell by

• exocytosis

• endocytosis

• the sodium-potassium pump

• channel proteins

What cell structure is shown in the photo that allows certain things to cross into and out of the cell?

• vesicle

• lysosome

• plasma (cell) membrane

• centrioles