WorksheetsA&P
Total questions: 18
Worksheet time: 6mins
Diffusion is the natural movement of molecules from:
Areas of low concentration to areas of high concentration
Areas of high concentration to areas of low concentration
Cold to hot environments
Gaseous to liquid environments
Which of the following will diffuse the fastest?
A tablespoon of sugar in a glass of water
Heat through a solid piece of steel
A pinch of salt in a glass of water
The smell of bacon cooking throughout a room
Why is diffusion so important in biology?
It's the basic power source for most types of cells
It allows substances to move across cell membranes
It prevents toxins from entering our bodies
Without diffusion, cell division could not take place
Which of the following describes homeostasis?
keeps variables exactly at the set point
organism's ability to maintain steady(stable) internal conditions
acts to keep values outside of a desired range
operates through positive feedback
What detects that the system is outside of homeostasis and adjustments need to be made?
effector
response
control center
stimulus
