Lab #4 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Brownian Movement | The microscopically visible motion of particles as they are bombarded by molecules. |
Brownian Movement slide | Particles of India ink moving - look alive - because of the distilled water bouncing against the India ink. Vibrating |
Diffusion | Tendency - due to random molecular motion - for substances to scatter or move away from regions of high concentration |
Diffusion when heat is added | Substances diffuse at a faster rate |
Diffusion without heat | Substances diffuse at a slow rate |
Particle size - small or lighter in weight | Substance that is small or lightweight will move across a surface (or material) at a faster rate |
Particle size - large or heavy in weight | Substance that is large or heavy will move across a surface (or material) at a slower rate. |
Osmosis | Diffusion of water across a selectively permeable membrane |
Isotonic | Balanced solution |
Hypertonic | High concentrated solution |
Hypotonic | Low concentrated solution |
Cells in isotonic solution | Remain intact |
Cells in hypotonic solution | Swell and burst |
Cells in hypertonic solution | Crenate (shrivel) |
Dialysis | The separation of small dissolved particles from larger particles by means of diffusion across a selectively permeable membrane. |
Ionic solutions | Called electrolytes because they are electrically charged and will conduct an electrical current. (ONLY ACIDS, BASES AND SALTS) |
Covalently charged particles | Can not conduct an electrical current. |
Distilled Water - electrolyte? | No |
Tap Water - electrolyte? | No |
Starch - electrolyte? | No |
Glucose - electrolyte? | No |
NaCl - electrolyte? | Yes, strong electrolyte |
HCl - electrolyte? | Yes, strong electrolyte |
NaOH - electrolyte? | Yes, strong base electrolyte |
Sugar cubes sweetening tea without stirring | Diffusion |
Cells bursting in distilled water | Osmosis |
Meat being dried and preserved with salt | Osmosis |
Perfume reaching nose of one person from the skin of another | Diffusion |
Urea diffusing from blood into water for artificial kidney | Dialysis |
Milk at dairy poured through cotton pad for cleaning | Filtration |
Kinetic | Name given the movement of particles due to molecular bombardment |
Passive | Diffusion, osmosis, dialysis and filtration are all examples of active or passive processes? |
Osmosis | Which term is the most inclusive - osmosis, diffusion, dialysis? |
Water | As osmosis occurs in the body, what substance is crossing a selectively permeable membrane? |
NaCl | When other factors are held constant, which substance - glucose or NaCl - should diffuse faster? |
Glucose | Which has the most particles - a 5% glucose solution or a 2% NaCl solution? |
Hypertonic | In osmosis, net movement of water is into the hypertonic or hypotonic solution? |
Iodine | What material is used to test for starch? |
Benedict's solution | What material is used to test for sugar? |
Hydrolysis | The membranous bag used to demonstrate dialysis swells and may even burst. What is the term for this? |
Osmosis | Which of these is not a special type of diffusion - osmosis, dialysis, filtration? |
Erythrocytes | What are most of the large molecules in blood that do not move across membranes by diffusion or filtration? |
Electrolytes | What term is used for substances that ionize in water? |
Acids, bases, salts | What three types of compounds are electrolytes? |
Created by:
daydreamer67
Popular Anatomy sets