Title: Alexandra Whitaker, Ms.Dayton, 12/23/16, 2.03 lab permeability
Objective(s): The main purpose is to find out if plastic bags are permeable to starch and, or, iodine. Also, to find out wither potatoes are hypotonic, hypertonic, or isotonic by testing the different amounts of sucrose solutions
Introduction: The necessary background information needed for this lab is the definition of osmosis, diffusion, active transports, passive transports, permeability, concentration, tonicity, and to now the scientific concepts of hypotonic, isotonic, and hypertonic.
Hypothesis: For part 1 my hypothesis is: That the starch will diffuse across the plastic bag and react with the iodine and will have a color change to the water to imply the reaction …show more content…
We can use this explain the change of color being due to the exchange of electrons going on when the starch and iodine connected.
6. If a balance was available, describe how you could use it in this experiment and what the purpose would be.
If there was a balance than you could use it in the experiment to show that an isotonic state is available.
7. Living organisms are made of cells. Those cells must receive nutrients and gases in order to undergo the metabolic processes that maintain homeostasis. In paragraph form, explain how you think the nutrients and gases enter the cell. Distinguish between the molecules that can enter by diffusion by simply moving across the membrane and those that must expend energy to cross the cell membrane.
Nutrient and gasses can enter a cell thru a multitude of ways. One way for small non polar molecules is that they can easily pass through the phosphide bilayer, since it has selective permeability. Also water can pass through with the attraction it has with the hydrophilic head of the phosphides. Passive transport of small molecules can also be possible along with the passive transport of large molecules can happen due to carrier
Objective(s): The main purpose is to find out if plastic bags are permeable to starch and, or, iodine. Also, to find out wither potatoes are hypotonic, hypertonic, or isotonic by testing the different amounts of sucrose solutions
Introduction: The necessary background information needed for this lab is the definition of osmosis, diffusion, active transports, passive transports, permeability, concentration, tonicity, and to now the scientific concepts of hypotonic, isotonic, and hypertonic.
Hypothesis: For part 1 my hypothesis is: That the starch will diffuse across the plastic bag and react with the iodine and will have a color change to the water to imply the reaction …show more content…
We can use this explain the change of color being due to the exchange of electrons going on when the starch and iodine connected.
6. If a balance was available, describe how you could use it in this experiment and what the purpose would be.
If there was a balance than you could use it in the experiment to show that an isotonic state is available.
7. Living organisms are made of cells. Those cells must receive nutrients and gases in order to undergo the metabolic processes that maintain homeostasis. In paragraph form, explain how you think the nutrients and gases enter the cell. Distinguish between the molecules that can enter by diffusion by simply moving across the membrane and those that must expend energy to cross the cell membrane.
Nutrient and gasses can enter a cell thru a multitude of ways. One way for small non polar molecules is that they can easily pass through the phosphide bilayer, since it has selective permeability. Also water can pass through with the attraction it has with the hydrophilic head of the phosphides. Passive transport of small molecules can also be possible along with the passive transport of large molecules can happen due to carrier