Diffusion is the movement of particles from a high to lower concentration. Osmosis is the diffusion of water across a membrane. Active transport moves particles from low to higher concentration.
In which direction do water particles move by osmosis?
High to low concentration
Low to high concentration
They don't move
What substance moves by osmosis?
Which is true for smaller organisms compared to larger organisms?
Smaller organisms have a small surface area to volume ratio
The surface area to volume ratio is zero for small organisms.
Small organisms have a large surface area to volume ratio
What happens to the rate of diffusion if the temperature is increased?
It stays the same
What must water molecules move through in osmosis?
A cell wall
A partially permeable membrane
A totally permeable membrane
What happens to plant cells that are put into a hyper-concentrated solution?
Cells become turgid
What happens to animal cells that are placed into a dilute solution?
Which of these processes requires energy?
After a sugary meal, which process will take glucose into the blood from the small intestine?
Which process do plants use to absorb nitrates from the soil?