What is diffusion?
The movement of particles from low concentration to high concentration
The movement of particles from high concentration to low concentration
Active movement of particles, requiring energy from respiration
All of the above
Which of the following has the highest water potential?
Acidic water
Pure water
Alkaline water
How does paramecium feed?
By endocytosis
By exocytosis
By osmosis
By diffusion
If the cells are surrounded by a solution which is more concentrated than the cytoplasm, which of the following will happen?
The cell will burst
The cell will remain the same
The cell will shrink
The cell will become permeable
If the vacuoles in the cell lose water for any reason, which of the following will happen?
The cells will become turgid
The cells will become flaccid
The cells will become rigid
How do the cells lining the small intestine take up glucose?
By active transport
By transpiration
By respiration
The liquid outside the cell which has the same concentration as that of the cell.
Tissue fluid
Cytoplasm
Cell fluid
The presence of microvilli in the cells increase the rate of absorption. Why?
Surface area is increased
Temperature is altered
Thickness is less
