He tells us to cut it once and examine the colors again. We see some of his humor come thought when he says, “Structurally, the onion is not a ball, but a nested set of fingers within fingers, each thrust up from the base though the center of the one before it” (14). He uses this to paint a picture in your mind about when you get past the physical appearance and open something up, you realize that it is more complex. Next, the smell. It is a burning odor flowing from the onion that was cut and placed in front of you.
Onion, Cheek, and Elodea Lab 1. What are the two types of cell we discussed? How would you classify onion, cheek, and Elodea cells? ans: The two types of cells we discussed is the plant cells, and animal cell. Onion, Cheek, and Elodea cells are all eukaryotic.
You may spool the DNA on your glass rod or pipette tip. 10. Spool the DNA by dipping a pipette tip or glass right where the extract layer and alcohol are in contact with each other. With your tube at eye level, twirl the rod and watch as DNA strands collect. Data: | Amount Added or Obtained | Initial Color | Purpose | Buffer | 10 ml | blue | Break through the cell membrane | Strawberry | 1 | red | Subject tested
Experiment Chromatography Of Food Dyes Abstract This experiment is to determine the presence of a mixture in a substance. Chromatography is used to separate substance in a mixture or separating components from a mixture. Using chromatography with a solvent we are able to separate the different mixtures found in a substance. Chromatography can tell if a sample is pure or if it is made up of several different substances. Experiment & Observation I gathered together my items; distilled water, salt, ruler, scissors, stapler pencil, tape, 16 toothpicks, Kool-Aid drink mix strawberry and grape, set of McCormick food coloring red, yellow, green and blue, small bag of M&M candy, plastic beaker 50 mL, petri dish 60mm, well-plate 24, FDC blue dye #1 0.5 mL vial, FDC blue dye #2 0.5 mL vial FDC red dye #3 0.5 mL vial, FDC red dye #40 0.5 mL vial, FDC yellow dye #5 0.5 mL vial, FDC yellow dye #6 0.5 mL vial, unknown 0.5 mL vial, 3 filter paper chrom 14x7 cm.
2. Heat the water until it boils and creates a purple liquid. 3. Strain the cabbage and place liquid in a container. 4.
Transfer the peanut butter that is now on the knife to one slice of bread and spread the scoop of peanut butter evenly on this slice with the knife. If more peanut butter is desired repeat taking the peanut butter from the jar and spreading it on the same slice of bread. Put the knife down off to the side. Put down the slice of bread with the peanut butter on it back on the plate, next to the other slice of bread, with the peanut butter side up. The third step is to clean the knife using the napkin and wipe it clean.
Answer: Take the power of the objectives then multiply them by the power of the eyepiece by 10x. (4 points) |Score | | | 2. Explain how to focus a microscope using the high power lens. Include any safety issues you need to be aware of. Answer: To focus a high power lens you need to turn the knob using the scanning lens after that you need to rotate the high power lens.
Laura Mccain Lab 5: Osmosis with Hypertonic, Isotonic and Hypotonic tonicity Purpose: The purpose of this lab is to familiarize you with osmosis and, specifically, what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis: Hypotonic Solution: the cell has a higher concentration in it than in the area surrounding it. Water moves into the cell to equal out concentration. Isotonic Solution: The cell has a equal proportion of concentration with the area surrounding. Water continually flows in and out to keep concentration even.
All solutions measured with the spectrophotometer were placed in spectrophotometer tubes. To count the E. coli cells, cells were dyed with crystal violet. A Pasteur pipette was used to transfer the dyed cells to a hemocytometer which was then placed on the stage of a brightfield
The onion is used in thousands of recipes. The onion or, scientifically speaking, the Allium Cepa can be used in different shapes and sizes. For instance, onions are usually chopped or sliced into smaller pieces then mixed with the meal being prepared. The Allium Cepa also can be used as a powder. The powder is used as a seasoning to give the meal a better taste.