Bio 100 Lecture Final Study Guide (All answers are true or false) 1. The level of scientific thought that we have the most certainty in is the hypothesis. 2. Controlled science experiments have no validity in biology research. 3. All living things obtain energy from their environment. 4. The four organic macromolecule groups common to all living things are carbohydrates‚ proteins‚ nucleic acids‚ and fats. 5. All living things are composed of one or more cells. 6. Humans are
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Planarian Regeneration Luke Ferreira Lab 5 Bio 122 April 12‚ 2015 Abstract: Regeneration of Planarians is the topic that will be explored and experimented. This experiment aims to prove that‚ flatworms placed into a warm environment will regenerate faster than flatworms in a cold environment because cold temperatures reduce metabolic rates which will slow the regeneration process. In order to prove this hypothesis flatworms were cut in half to induce regeneration. These flatworms were then separated
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eukaryote is 10-30 µm) ribosome diameter= 30 nm‚ nucleus diameter= 0.006mm‚ mitochondrion length=3x10-6m‚ giraffe axon length= 1m‚ microfilament diameter=0.007µm Main limitations of cell size are need to maintain an adequate SA:V ratio‚ to keep diffusion distances small‚ and to maintain adequate concentrations of substances. Cells with small SA and large V would not be able to get proper nutrients/ exchange with environment. Eukaryotes can be larger because their organelles can support larger volumes
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PRODUCTION OF CARBON PAPER USING CHARCOAL AND BLACK MIX OF USED BATTERY AS PIGMENT D EPARTMENT O F S CIENCE IN COOPERATION WITH THE AND T ECHNOLOGY ABSTRACT The objective of the first part of the study was to find the best ratio of ink using carbon from used batteries and charcoal as pigments. The ink was evaluated on the basis of how much pigment is suspended in the mixture and their shelf life. The second part was aimed at the production of carbon paper. The best kinds of ink were tested
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Problem: Why do leaves change color in the fall? Background: Leaves contain many pigments such as chlorophyll b‚ xanthophyll‚ and beta carotene besides chlorophyll a. They are part of the photosystem in the thylakoids. Pigment molecules can be separated by a procedure called chromatography. The procedure uses a special paper and solvent. The chlorophyll molecules adhere to the paper. The solvent molecules move up the paper by capillary action. Each chlorophyll molecule will travel up the paper at
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power transport Diffusion: 1: simple; no membrane proteins ‚ 2 : facilitated(passive): requires membrane bound carrier protein that assits transport …….. both deal with gradients‚ kinectic energy and equilibrium * Higher to lower concentraion Osmosis; water moves form higher to lower concentration Filtration: occurs only across capillary walls Vesicular transport(active process); phagocytosis‚ endocytosis‚ pinocytosis‚ and excocytosis KE= ½ mv^2 Driving force of diffusion is…. Kinetic
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QUESTION:_ What is chromatography? How many pigments are there in a plant? How the different pigments in a plant can be separated? _APPARATUS_ : Please refer to the handout _MATERIAL_ : Please refer to the handout _METHOD_ : Please refer to the handout _DATA COLLECTION_: Coloured band Pigment front distance (± 0.05cm) Solvent front distance (± 0.05cm) Green 11.7 13.0 Yellow 12.5 13.0 _DATA PROCESSING_: Coloured band Pigment Ratio of fronts Green Chlorophyll _b_
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Light Absorption by Photosynthetic Pigments in Silver Beet Abstract The aim of the experiment was to determine the absorption of differing wavelengths of light by individual pigments in the vegetable silver beet. Pigments were extracted from silver beet leaves and separated into chlorophyll a‚ chlorophyll b‚ and carotene via chromatographs. Chlorophylls were then separated and an absorption spectra created using results obtained from a spectrophotometer. It was clear there were two distinct peaks
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respiratory pigments; these pigments are metal containing proteins which combine reversibly with oxygen. Respiratory pigments are found within cells of blood and their primary function is to aid in the transportation of molecular oxygen. There are four unanimously recognised respiratory pigments‚ these are; hemoglobin‚ followed by hemocyanin‚ then chlorocruorin and Hemerythrin. These four pigments occur in greater percentages and are far more efficient in carrying oxygen than the few other pigments known
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The energy is traveling through pigments until the it reaches the reaction center. To boost the electron to a high level the energy would transfer to p680. After the energy being transferred its then passed to an acceptor molecule which would replace an electron from water. O2 would be
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