Practice Biology Ia: Diffusion

At five minute intervals over the next fifteen minute period, record the color intensity of the solution of each test tube.

C. Final Thought: With these simple directions I hope you receive the best Tie Dye

diffusion is one of the passive transport processes. it is used in oxygen entering a cell and carbon dioxide leaving a cell. diffusion is the movement of particles such as atoms or molecules from a high concentration place in an area of a low concentration. this shows that they diffuse down the concentration gradient. the concentration gradient is a gradual change in the concentration of solutes in a solution as a function of distance through a solution. in biology a gradient results from an unequal distribution of particles across the cell membrane. When this happens solutes move along the concentration gradient until the concentration of the

Record the results of your investigations of each unknown in Table 1 by completing the following steps:

5 Remaining in the darkroom move print to tray of running water, do 30-45 second rinse. Squeegee print, place on flat tray.

In the second case, a domino bridges this strip. Because there are an—1 ways to tile each

pressing on the gum with my finger then release and watch the time it takes for the colour to go from

6. Now get all 6 of the pipe cleaners that are 21 centimeters in length and place 3 on the upper and lower side. Tape it on now. Not on the foil, but taped and attached to the side of it.

XII. Take the 250 ml beaker to your lab bench. Set up a gravity filtration with a plastic funnel, folded wet filter paper, and an Erlenmeyer flask. Pour the content in the 250 ml beaker slowly through the filter paper. Wash the filter paper with deionized water. Dispose of the filtrate in the proper labeled waste container.

Cut out a 4-inch construction paper square of each of the following colors: white, yellow, blue, red, and black.

When I finish the experiment it will show each other color that was mixed together to make one certain color. The other colors that were mixed together will show and each part will travel a different distance to the other end of the gel chamber. I am using cut out combs to make holes in the gel before I pour the gel. Electrodes will be placed at both ends of the gel chamber. I am also using a buffer solution made of baking soda and bottled water.

2.Use a cork borer to cut cylinders of raw beetroot. Ensure that all cuts made are at a vertical angle and that each individual slice of beetroot is exactly 3mm in thickness. Cut five discs, as this will provide a good enough range of results to draw a graph and also to make conclusions as to why the

Second, have the four people you are testing on come over. Have the four people all sit down at the table. Then give one person a black and white memory photo and start the timer for one minute.When the minute is up give the person a piece of paper and have them write down what they remembered. They have one minute to do this. Next give them a memory photo with a green see-through clipboard on top. Have them look at this photo for one minute. When the minute is up replace the photo with a piece of paper. Give them one minute to write down what they remembered on the piece of paper. Then you will need to give the person a memory photo with a pink see-through clipboard on top. Then take the photo from them and give them a piece of paper. Give them one minute to write down what they remembered off of the photo.

this kind is a straightforward pencil and paper puzzle, which you may have done in

Cells are always in motion, energy of motion known as kinetic energy. This kinetic energy causes the membranes in motion to bump into each other, causing the membranes to move in another direction – a direction from a higher concentration of the solution to a lower one. Membranes moving around leads to diffusion and osmosis. Diffusion is the random movement of molecules from an area of higher concentration to an area of lower concentration, until they are equally distributed (Mader & Windelspecht, 2012, p. 50). Cells have a plasma membrane that separates the internal cell from the exterior environment. The plasma membrane is selectively permeable which allows certain solvents to pass through