#AP BIOLOGY LAB MANUAL LAB 111 MANUAL#

PART B - Factors Influencing the Rate of Diffusion Experiment 1: Mass and Diffusion Rate Question: Using the graph, what is the relationship between mass and diffusion rate? Experiment 2: Temperature and Diffusion Rate Question: Using the graph, what is the relationship between temperature and diffusion rate? PART C - Monitoring Diffusion using an Artificial Cell Experiment 1.0: A dialysis bag containing 25% glucose and 25% starch is immersed into a beaker containing distilled water and Lugol's iodine solution. If the concentration of dissolved molecules are the same inside and outside the cell the solution is _(m)_ and no net movement of water occurs across the membrane. If you are taking a general biology course or AP Biology, at some point you will have to do biology lab experiments. They do not have access to the filter paper and petri dishes recommended in the AP lab manual.

#AP BIOLOGY LAB MANUAL LAB 111 MANUAL#

This protocol has been adapted from the Advanced PlacementВ® Biology Laboratory Manual with permission from the. In this case, water will move out of the cell causing the cells to _(l)_. If the environment outside the cell has a higher concentration of dissolved molecules that inside the cell, the solution is said to be _(k)_. When the environment outside the cells has a lower concentration of dissolved molecules that inside the cell, the solution is said to be _(h)_, and water will move from the solution into the cell, thus causing the cell to _(i)_ and sometimes causing the cell to _(j)_(as is the case with animal cells in extremely dilute solutions).

The diffusion of water through a semi-permeable membrane is referred to as _(g)_. _(f)_ is a method used to measure the diffusion of solute molecules through a semi-permeable membrane. Two examples studied in lab include _(d)_ and _(e)_. Several factors affect the rate of diffusion.

Diffusion will continue until molecules become evenly disturbed and a concentration gradient no longer exist.

Movement of molecules occurs due to _(b)_ energy (energy of motion). _(a)_ is the movement of molecules from a region of higher concentration to a region of lower concentration. Diffusion Osmosis Hypertonic Kinetic Size Equilibrium Swell Temperature Crenate Hypotonic Burst Dialysis Isotonic Cells interact with their environment by moving substances (water, gases, and salts) across cell membrane into and out of the cell. Read over the paragraph and fill in the blanks with the appropriate term. PART A - Diffusion and Osmosis Terms The following paragraph demonstrates some of the terms you learned in the osmosis and diffusion lab.

Ap biology lab manual lab 111