B2 Cell Structure Flashcards
What are living organisms made out of?
Cells
Function of ciliated cells
Movement of mucus in trachea, oviducts and bronchi
Function of root hair cells
Absorption
Functions of palisade mesophyll cells
Photosynthesis
Function of Red blood cells
Transport of oxygen
Function of sperm and eggs cells
Reproductions
Magnification equation
Magnification = Image size / actual size
Define diffusion
Net movement of particles from a region of higher concentration to a lower one down a concentration gradient. Due to random movement
How to do substances move in and out of cells?
By diffusion through the cell membrane
How does water move in and out of cells?
By osmosis through the cell membrane
How does surface area affect diffusion
happen at a faster rate
Define Osmosis
Net movement of water from a higher water potential to a region of lower, through the partially permeable membrane
How does temperature affect diffusion
happens at a faster rate
Why is water potential important to plants?
Water is need to keep turgor pressure constant. Without it the plant goes floppy