What type of product results when 3-pentanone reacts with dimethylamine? A) enolate B) enol C) enamine D) imine 5) E) amide 6) The relationship between ketones and their corresponding enols is one of: A) enantiomers B) diastereomers. C) tautomers. D) cis-trans isomers. E) allotropes. 6) 7) Which of the following ketones will give a positive iodoform test? A) 2-methyl-3-pentanone B) 3-hexanone C) 4-heptanone D) 2-hexanone E) cyclohexanone 7) 1 8) Which of the following reagents will quanti
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The Open Mineral Processing Journal‚ 2011‚ 4‚ 25-44 25 Open Access Flotation Frothers: Review of Their Classifications‚ Properties and Preparation Hamid Khoshdast* and Abbas Sam Department of Mining Engineering‚ Faculty of Engineering‚ Shahid Bahonar University‚ 76169133‚ Kerman‚ Iran Abstract: The importance of frothers in flotation is widely acknowledged‚ particularly in terms of their role with respect to bubble size‚ and the stability and mobility of the froth phase. These factors
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the ketones from dihydroxyacetone. Glucose can exist in two different ring forms: one where the hydroxyl group on carbon-1 is below the ring (á-glucose) and one where the hydroxyl group is above the ring (â-glucose). These are known as á- and â-isomers‚ and‚
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Bio 1011 Cells Exam #1 Answer the multiple choice questions on the scantron sheet. Select the one choice that best answers the question. Answer the short answer questions in the space provided at the end of the exam. 1. Which of the following is the SMALLEST? a. a bacterium b. a ribosome c. a hexose sugar d. a water molecule e. a yeast cell 2. The four main families of small inorganic molecules in cells are a. salts‚ sugars‚ fatty acids‚ amino acids‚ nucleotides b.
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The study is entitled Combined solution of Garlic (Allium sativum) and Lemongrass (Cymbopogon citratus). Specifically‚ it sought to find out how these two solutions (lemongrass and garlic) can effectively kill mosquitoes. It aimed at looking for an organic and safe measure in treating the abundance of mosquito. Ideally‚ the researcher’s study promotes a tandem between science and creation’s conservation. The materials composing the solution were 40 mL of the combined solution of Lemongrass (Cymbopogon
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This scientific report will be based on cellular respiration‚ or fermentation. In specific‚ how the type of sugar affects the rate of fermentation. The aim of this experiment was to find which type of sugar was best suited to produce ethanol. In the experiment‚ four different sugars were used‚ they included sucrose‚ glucose‚ lactose and fructose. This research is still relevant today‚ as alcohol is still consumed and is required on a large scale. This makes it crucial to companies to find the best
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characteristic of a polar molecule? a) contains double or triple bonds b) is formed at extremely low temperatures c) contains ions as part of the structure d) has an asymmetrical distribution of electrical charge e) contains the element oxygen 2. Isomers are molecules that a) react readily with one another b) have the same molecular formula c) have different molecular masses d) differ in the number of unsaturated bonds e) must contain the same functional group 3. In living organisms‚ buffers
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Evolution of Skin Pigmentation due to UV Levels and Genes Introduction Identification of a person has long been related to the color of their skin‚ as skin color is the defining measure of races. There are multiple variations in skin color throughout the globe‚ with the differences in outward appearance ranging from dark to light. But what exactly has caused this to occur? What is the underlying event that has led to so much variation in the pigmentation of a person? What selection pressures
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Enzymatic Activity of Salivary Amylase Abstract: Salivary amylase is an enzyme that can digest starch molecules and break them down to sugar molecules. In this experiment‚ the enzymatic activity and specificity of salivary amylase was examined depending on the changes in pH and temperature. In the first part of the experiment‚ the effect of temperature was determined‚ using constant temperature bath (4‚ room temp‚ 37‚ 50‚ 60‚ and 70°C). Having the room temp and 50°C as the highest and 37°C as infinite
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ABSTRACT Enzymes are highly specific and can distinguish isomers of the same molecule. The enzyme invertase specifically catalyzes the reaction of the conversion of sucrose to its individual carbohydrates glucose and fructose. It does not catalyse the reaction of maltose to 2 glucose or lactose to galactose. In this experiment‚ titrimetric and spectrophotometric methods were used to determine the specificity of invertase by determining the amount of glucose converted from the given disaccharides
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