Please answer questions at top of second picture. OBJECTIVES After completing th
ID: 206571 • Letter: P
Question
Please answer questions at top of second picture.
OBJECTIVES After completing this lab, you will be able to: 1. Explain solvent, solute and solution 2. Explain diffusion and osmosis 3. Explain 4. Descri 5. Describe how the direction and rate of osmosis into and out of simulated cells be how hypotonic, hypertonic and isotonic solutions affect the volume of cells a hypertonic, isotonic and hypotonic solutions affect the volume of plant MATERIALS Number Students must bing to class Iten ocationn Students Supply 6 Dialysis Tubes 12 pieces of yan Teacher station 500 mLof 25%sucrose solution 1 L of 1% sucrose solution 500 mL of M 500 mL of H:0 500 mL of 6% NaCl solution 2 boxes of slides Slip covens Beaker of Elodea 2 Forceps Teacher station Teacher station Teacher station Teacher station Teacher station 1 at 2 sink locations 1 at 2 sink locations Per class Per class Per class Per class Per class Per class 1 beaker at 2 sink locations Per class 1 at each 2 sink locations IPer class 1 at each 2 sink locations Per class Fleaker Waste Beaker 6 packs of Lens Paper Review all MSDS sheets before beginning the lab. 1 in each student bin INTRODUCTION o maintain homeostasis cells must be able to regulate what enters and exits the cel assigned to the plasma membrane, which is selectively and differentially permeable membrane is a phospholipid bilayer (two layers) that surrounds the cell. Each layer outer hydrophilic (water loving) head and 2 inner hydrophobic (water fearing) tails. in lipid and those that are nonpolar are able to pass through the cell membrane. A A_ Hydrophilic head |-) Hydrophobic lipid (fatty acids) tails , | | | | | Hydrophilic head Polar molecules have positively and negatively charged areas. Nonpolar mol those charged areas on them. Molecules that are small and nonpolar pass thro membrane more readily than those that are large and polar. Molecules such as glucose, amino acids and charged ions can get across the protein carriers or channels. Small, hydrophobic molecules such as oxygen ca the cell membraneExplanation / Answer
In both the cases the molecules which don't posses a net charge can easily pass through the membrane, in both out and inside the cell because membrane contain non polar phospholipids on both the sides.and charged material have to pass through protein channels.