Movement In And Out Of Cells Flashcards
Describe the process of diffusion
The movement of particles from an area of high concentration to an area of low concentration
Energy for diffusion
Kinetic energy
Factors that influence diffusion
Surface area
Temperature
Concentration gradient
Distance
Describe the importance of gaseous diffusion
Waste products are removed
Oxygen in plants is excreted during photosynthesis
Carbon dioxide in Animals during gaseous exchange in the alveoli
Describe the importance of solute diffusion
Products from digestion are absorbed from the ileum of mammals by diffusion.
Turgor pressure
Pressure exerted by water inside the cell
Turgid
The cell is firm
Flaccid
The plant is wilting away.
The cell membrane is pulling away from the cell wall.
Plasmolysed
The vacuole and cytoplasm shrink so much the cell membrane pulls away from the cell wall.
Importance of water potential
Nutrients dissolve in water
Water helps plants keep their structure
Metabolic watse is dissolved in water
Hypotonic solution
Solution with a high water potential
Define active transport
The movement of particles through a cell membrane from a region of low concentration to a region of high concentration using energy from respiration
The process of the transportation of mineral ions by root hair cells
Active transport
The process of the transportation of glucose by epithelial cells of villi
Active transport
The process of the transportation of glucose by epithelial cells of kidney tubes
Active transport
