Statement: Wrapping green bananas in newspaper will ripen them faster. Background Knowledge: Plants use ethylene as a hormone. It is a very small‚ simple molecule that exists as a gas at biological temperatures. Thus‚ when a plant releases ethylene‚ it diffuses quite quickly in the air. Ripening can be accelerated or decelerated depending on the conditions green fruits are put under for example washing fruits or wrapping them in newspaper. Therefore newspaper (wrapping green fruit in newspaper) is
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are some fruits sweet and some sour‚ whereas others have no specific taste? Naturally fruit contains cellulose‚ proteins‚ starch‚ proteins‚ vitamins‚ certain acids and fructose (or sugar). When fruit ripens‚ a series of chemical changes occur in the fruit that result in either a sweet fruit‚ sweet and sour fruit‚ sour fruit or fruit with no specific taste. During these changes‚ the acids content in fruit becomes less and the fructose content increases thereby resulting in a sweet fruit (Coen
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Placing fruit in a bag will help hasten the ripening for only a few fruits. Most fruits will not ripen (ever) once they have been picked. The only fruits that ripen once they’re picked are bananas‚ avocados‚ pears‚ mango‚ and kiwifruit. Ripeness in fruits is based on sugar content‚ not color‚ thus most tomatoes in grocery stores have no flavor because they were picked green and exposed to ethylene gas to induce color change. Tomatoes are what are known as a "climacteric fruit" which means they’ll
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Heeneman Bio 152-100 February 27‚ 2013 Fruit Fly Lab Data from my group: Vestigial winged offspring: 0 Wild Type winged offspring: 10 Data from class: Vestigial winged offspring: 42 Wild Type winged offspring: 237 Data from all classes: Vestigial winged offspring: 345 Wild Type winged offspring: 1‚297 The hypothesis of the fruit fly mating experiment was that when placing homozygous recessive virgin female fruit flies in a mating tube with two homozygous
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understand the biology of other organisms‚ usually humans. Fruit flies share 75% of the genes that cause certain diseases with humans. Therefore scientists can learn about human genetics by studying fruit fly genetics. This falls under the bigger principle of understanding the basic biology that all organisms have in common. Common fruit flies like Drosophila are useful when studying genetics for several reasons‚ such as their small size that makes them easy to utilize in genetics experiments‚ they are
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Prac 4 | Vertebrate Forelimbs‚ Shake a Leg! Ch. 6.4 H.Bio T.Book Aim: To gather information from secondary sources to observe‚ analyze and compare the structure of a range of vertebrate forelimbs. Materials: Pearson Biology Textbook coloured pencils Skeletons‚ photographs of a number of vertebrates copy of student worksheet Method: 1 Examine each of the vertebrate specimens in turn. Using Figure 1 as a guide‚ locate and identify the bones making up the pentadactyl limb structure
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Title : The movement of substances across a semi permeable membrane Objective : To study the movement of substances across a semi permeable membrane Problem statement : What factor influences the diffusion of substances through a semi permeable membrane? Hypothesis : The diffusion of molecules across a semi permeable membrane is based on the size of the molecule Variables: a) Manipulated : Size of solute molecules b) Responding : Colour of solution c) Fixed : Temperature and time
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research with fruit fly. Thomas Morgan was born on September 15‚1866 in Lexington‚ Kentucky. In 1886‚ he received his B.S. degree at the University of Kentucky. In 1910‚ Morgan saw that one male fly had a distinct difference about it. Instead of normal red eyes‚ this fly had white eyes (Allen). He wanted to test the breeding of Drosophila in fruit flies to understand the transmission of genetic traits through their generations. In order to figure out the transmission‚ Morgan did an experiment of cross
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PAGE 1 Skill A: Using and Organizing Techniques‚ Apparatus and Material Title: Comparison of Soil Porosity Date: March 18‚ 2013 Aim: To prove that Sandy Soil would have the mot water after 24 hours. Apparatus/Materials: Three Conical Flasks‚ Three Filter Funnels‚ Cotton Balls‚ Measuring Cylinder‚ Loam Soil‚ 225ml of Water‚ Paper‚ Pencil Methods/Procedures: Obtain and clean out three conical flasks. Label each flask Sand‚ Loam and Clay. Plug three funnels
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have neuron on their legs‚ wings and body that activate whenever sugar is near (Dye 2004). Flies such as fruit flies eat nectar because it is
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