using different temperatures. c. fossil fuels ______4. It consist of paraffin wax‚ beeswax mixed with coal tar-dye. d. foot powder ______5. The protein where sulfanilamide was synthesized e. fractional distillation ______6. It is a preparation of soap‚ tragacanth‚ and glycerin to soften the skin f. chemotherapy ______7 . Compounds which fasten dyes g. lanolin ______8. Wool grease from sheep h. mordants ______9. Study of fighting diseases-causing
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02 II (2) | (a) The figure below shows the initial set-up of a model of the mass flow hypothesis for translocation in the phloem.Model of mass flow hypothesis (i) It was observed that the dye moved from osmometer X to osmometer Y during the course of the experiment. Explain this observation according to the mass flow hypothesis. (3 marks) (ii) Explain the function of tubing M in this model. In plants‚ which tissue serves the same function as tubing M? (3
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Osmosis is the movement of water across a membrane. It always navigates to the area of the membrane with a higher solute concentration. We take a closer look at the effects of osmosis in this lab through the examination of red blood cells (sheep)‚ plant cells (elodea)‚ and active transport in yeast. Under the microscope‚ we can determine the effects on plant and animal cells exposed to hypotonic‚ hypertonic‚ and isotonic sodium chloride solutions. Plant cells have a cell wall; however‚ animal cells
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play a very important role in microbiology and pharmaceuticals. The samples of milk were collected from the market surrounding places like Brahmapuram‚ Thiruvalluvar and Katpadi. Its nutritional quality was analysed by pH determination‚ Methylene Blue Dye Reduction Test Assay‚ and the cost of extracting casein was analysed using the principles of bioprocess economics‚
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The dye particles also diffused against a high to low concentration gradient through the visking tubing which is not osmosis as it is the movement of particles rather than as the molecules were able to move through the semipermeable membrane whereas the sucrose solution particles are too large to diffuse through the semipermeable membrane of the visking tubing so they remain within the tubing. This causes the dye to move from within the tubing and out to the water and stain it with the dye colour
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greater polar molecule. Water is more polar than pentane and pentane is less of a polar molecule than methanol when it comes to comparing the mixture of water/pentane and the mixture of pentane/methanol. When food dye was added‚ it was able to form a homogeneous mixture of food because the food dye was a polar molecule‚ which made it water soluble. The next part of the lab was spent observing the effect chain length has on miscible alcohol in water. The result in table 4 matches the hypothesis that the
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RESEARCH PROJECT PROPOSAL 1 Eco Pen: Recycled Ballpoint pen Ink from Motor Oil Proponents: ACLAN JR‚ VIRGILIO P. ALDAMA‚ ALLIAH A. DE CHAVEZ‚ MYLENE JENVER E. MANGERON‚ AIRELL M. MASONGSONG‚ JOHN MICHAEL L. Colegio de San Juan de Letran - Calamba RESEARCH PROJECT PROPOSAL 2 Significance: Can you imagine how many historical documents were written with ink? What if ink were not invented? Probably we don’t have this idea or maybe this paper. Inks and oils
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during the acid-fast procedure‚ they are able to retain the primary dye even when decolorized by a powerful solvent known as acid alcohol. Most other bacterial genera are easily decolorized by acid alcohol. Ziehl/Neelsen Acid-Fast Staining Procedure In later years‚ Ehrlich’s technique was improved upon by two microbiologists‚ Ziehl and Neelsen. Like Ehrlich‚ Ziehl and Neelsen’s procedure requires heat to force the primary dye through the cell wall. Another microbiologist‚ Kinyoun‚ developed a
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painting‚ or frosting‚ in which the chemicals have little or no contact with your scalp. (Any hair-coloring agents absorbed into your system would come through your skin‚ not through your hair shaft.) - http://www.babycenter.com/404_is-it-safe-to-dye-my-hair-during-pregnancy_3273.bc Another thing to keep in mind is the fact that pregnancy‚ in itself‚ can naturally change the hair’s texture. Pregnancy may also cause your hair to react differently to perming or coloring. If this is the case‚ you may
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YOUR CHEEK - you don’t need chunks of skin and definitely don’t want to draw blood. 3. Gently swish the toothpick in the drop of dye on the slide. Some of your cheek cells should drift off into the dye. 4. Throw the toothpick away. 5. Stand a thin glass cover slip on its edge near the drop of dye. 6. Slowly lower the other side of the cover slip until it covers the dye completely. Make sure there are no air bubbles. 7. Make sure the lowest power lens (the shortest lens) is in place over the stage
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