This study was conducted with a partner, since some parts of the experiment were able to be done simultaneously. One partner prepared a TLC developing jar by pouring a small layer of 4:1:1 propanol/acetic acid/water into a developing jar. A solvent wick was made by wetting a piece of filter with the solvent, and it was placed in the jar. A silica coated TLC plate was obtained, and a spotting line was carefully drawn approximately 1.5 cm from the bottom of the plate using a pencil. Extra care was taken to not touch the plate with bare skin.
Osmosis in potatoes Aim of the laboratory: The aim of this lab is to analyse the effect that the concentration change of sucrose has on the potatoes' osmosis rate. This can be investigated by using potatoes of the same shape, size and length that are placed in different beakers with different concentrations of sucrose. The potatoes must be weighed prior to as well as posterior to the placement in the beakers to measure the difference of the size, length, and eventually shape of the potato subsequent to the exposure of osmosis. It is important to have equal and consistent shapes and lengths of the potatoes.
The veins were lighter green while the leaves were darker green, and the leaves were smooth and tear-dropped shaped. One plant was speckled white while the others were green. For each plant we cut a square of parafilm; we stretched it out gently over the top of the pot, leaving just a little hole for the stem to come through, and stretched it to
It is considered one of the quick blackhead removals that are used to treat the problem of blackheads in a short time. It is a great treatment for getting rid of excess oils on the surface of the skin. Moreover, it leaves the skin smooth and fresh. Thus, oats has many uses for removing oils and nourishing the skin.
Using the 0.1 M stock solutions of sugar, a 0.01 M dilution was created for each sugar type by adding water to the stock solution 9 out of 1. A 20 mL dilution was made for each trial. The same volume of each solution (10 mL -5 mL ) was added to the green sponges to create four group; Group 1: Sponge with 10 Ml 0.01 M glucose solution, Group 2: Sponge with 10 mL 0.01 M fructose solution, Group 3: Sponge with 10mL 0.01 M sucrose solution, Group 4 (Control): Sponge with 10 mL water. The four sponges were placed every 90 degrees on the edge of the arena. The isopods were placed into their environment for one to two minutes to acclimate with the environment.
On a filter paper or cotton bud, pick the desired colonies from the agar plate. Then, using a dropper, take the oxidase reagent and drop it on to the filter paper and observe for colour changes. The blue colour appearance indicates positive reaction whereas if there are no changes, then it’s a negative reaction. 3.12.3 Genus Verification using TCBS agar The TCBS medium, known as Thiosulfate Citrate Bile Salts Sucrose Agar is a recommended selective medium which allows the growth of bacteria belonging to the genera Vibrio.
The wavelength of the absorption maximum for the chlorophylls are red and blue. The wavelengths of absorption maximum for the other three carotenoids is blue-green. Shown in the graph below. The reason why plants have more than one or more pigments is because chlorophyll has a small range of light that it captures.
All three smears were viewed under the oil immersion lens (x1000) (3). The use of oil immersion as opposed to lower magnification allowed the organisms to be viewed more clearly and determine certain characteristics of each bacteria due to the color that appeared under the microscope. The gram stain of Micrococcus leuteus (Figure 1) was gram-positive due to the purple color after being stained. The gram stain of Serratia marcescens (Figure 2) was gram-negative due to the pink color after being stained. The gram stain of M. leuteus, S. marcescens and Escherichia coli (Figure 3) was both gram-positive and gram-negative, because S. marcescens and E. coli are gram-negative (4), and M. leuteus is gram-positive.
The red will separate into different shades of red and yellow. The black will stay black with some shades of gray. Lastly, the brown will spread out into different shades black and brown. I think this because of our previous lab with the green ink and also because
Transformation was successful in the plates where the bacteria consumed the pGLO plasmid. In the first plate that the bacterium was plated on it included the LB broth and of ampicillin antibiotic (amp), 2 colonies were present. The second plate of bacteria was grown with the presence of LB broth, ampicillin, arabinose sugar (ara), and 22 colonies were observed. But a green fluorescent glow of the colonies was only present in plate 2. Plates 3 and 4 were the control plates.
Problem: How can you separate beads, iron, salt, and sand into four piles of separate substances? Hypothesis: Materials: Mixture (Beads, Iron, Salt, Sand) Digital Scale 8 Dixie Cups as Containers(a,b,c,d,e,f,g,h) Plastic Wrap 1 short box Clear packing tape
After the cover slip was in placed we then got microscopes and set the stages and lighting to view the specimen. The spores were to be observed at a 4x magnification or 10X to see the color. We were to observe and record 30 asci and enter on computer spreadsheet, but asci with 8 spores of identical color were to
Unknown Lab Report Mikee Lianne Gonzales Biol 351- 1005 Holly Martin Unknown: # 76 Abstract This report is about identifying the respective genus of the given unknown organism. The goal is to show and prove the student’s understanding of microbiology and laboratory learned experimental techniques.