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Molecule Essay Topics & Paper Examples

DNA segments

The nascent mRNA strand generated from the process of transcription is usually subjected to a number of reactions that are altogether referred to as mRNA processing (Brown, 2002). These series of processes enables the mRNA strand to be ready for translation, which is technically known as the production of a protein product from an mRNA strand. One of the processes involved in mRNA processing is the capping of the 5’ end of the mRNA strand using a guanosine molecule. This capping thus produces a 7-methyl guanosine structure at the 5’ end of the mRNA strand. In addition, the 3’ end of the immature mRNA strand is also attached to a polyA tail, which is technically a nucleic acid strand composed…

Lab report for chromatography

Study Questions: One of the requirements for the photosynthesis process to occur, the plant cells need sufficient light. Pigments are the substances that absorbed visible light. Different pigments absorb light of different wavelengths. From the absorption spectrum of chlorophyll a, it suggests that blue and red light work best for photosynthesis. There is a high degree correlation between the absorption spectra of leaf and the absorption spectra of chlorophyll a, chlorophyll b and carotene. It is because those pigments are used to absorb the visible light for the leaf. The phenomenon of capillarity is involved in this technique. The relative molecular mass of chlorophyll b is greater than chlorophyll a. Since it is lighter, chlorophyll b can cause more rise…

Diffusion and osmosis lab

What happened to the iodine, the starch, the glucose and the water in your experiment? Explain which molecules did/did not cross the membrane and in which direction they moved. Substance Prediction Results Starch Starch will stay in the cellulose tubing The results were correct Glucose Glucose will defuse and move out The results were correct Iodine The iodine will change color The results were correct 2. Did the results of your experiment agree or disagree with your prediction? Why or why not? My results agreed with my prediction because the starch, glucose and iodine stayed in the cellulose tubing, or the water changed color. 3. Considering your observations, suggest an explanation for the results of your experiment. What assumptions did…

Biology Lab for virtual school.. Lesson 1.04

When an object falls onto the surface, it has to push the water molecules apart. If the effect of the weight of the object is insufficient to match the attractive forces between molecules in the surface layer, the object will not enter the surface. Molecules of most detergents and soaps are long chain hydrocarbon molecules with an ionic group at one end, usually carrying a negative charge, thus making it an anion. www.sciencedaily.com/articles/s/soap_bubles.html When the drop of detergent is added to the powdered surface, the initial effect is to draw the powder back to the edges very rapidly as the detergent molecules form their own surface layer with a lower surface tension than the water. As the detergent gradually mixes…