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Ciliated cells have tiny hairs on them that are called
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Hemoglobin is the protein in red blood cells that binds oxygen. If a mutation occurs in the DNA that codes for hemoglobin, the structure of hemoglobin can change. The change in structure of hemoglobin can then change the shape of red blood cells, and some mutations can cause red blood cells to become sickle-shaped.Sickled red blood cells carry less oxygen than normal red blood cells. What does this demonstrate about mutations in the DNA that codes for hemoglobin? A. These mutations can change the structure of oxygen so that it does not bind to hemoglobin. B. These mutations decrease the amount of oxygen available to bind with hemoglobin. C. These mutations are unable to affect the structure and function of hemoglobin. D. These mutations can change the structure and function of hemoglobin.
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Consider logistic model, = () = (1 ) . Find the equilibrium points and the linearization about each for the logistic model. Hence determine the stability of each of these equilibrium points.
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The map gives the average number of tornadoes per year for the entire United States and for each state. On average, what percentage of tornadoes occur in Texas?
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how a new plant develops with an already growing plant
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the graph shows data frm ice cores
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What do these two changes have in common?rust forming on a metal gatean old sandwich rotting in a trashcanA. Both are physical changesB. Both are caused by heatingC. Both are chemical changesD. Both are caused by cooling
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What is the function of proteinchannels in facilitateddiffusion?A. help large molecules cross the cellmembraneB. block all molecules from entering the cellmembranesC. help molecules expand to largermolecules
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When 4.41g of phosphoric acid (H3PO4) react with 9.25g of barium hydroxide, water and insoluble barium phosphate form. mole ratio
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Taking on the attitudes of others because of real or imagined pressure is:A. social cognition B. minority influence C. deindividuation D. conformity
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Which process, which happens only in autotrophs, supplies most of theenergy for all of Earth's organisms?O A. DecompositionOB. PhotosynthesisOC. Cellular respirationOD. Chemosynthesis
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Help please based on this graph, did observing male toads help scientist oredict the earthquakes that occured in l'aquila?
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do prokaryotic organisms have simple dna
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three do you think are the most important and why?
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List three limited resources and three non renewable resources.
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Which features make capillaries great forexchanging substances between theblood & cells? (select all that apply)the blood pressure is much lower & the floodflows slower, allowing time for exchangethey are permeable & allow substancesin/outthey have a very large total cross sectionalarea for the exchangethey are only one cell layer thick
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Which sentence describes a carbohydrate?OA. It may have a branching, layered, or twisting shape.O B. It helps defend an organism against harmful foreign substances.C. Each of its monomers contains a phosphate group, a sugar, and anitrogen base.OD. It is insoluble in water.
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Which of the options below describe thewalls of veins?thick muscle layer & large elastic layerthin smooth muscle & small elastic layeronly one cell thick
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scientist learn about the properties of some particles from the collisions that occur inside a
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Hemoglobin is a protein involved in oxygen transport. Myosin is a protein found in muscles. Which sentence describes these proteins? O A. They can swap their functions when the body requires it. OB. They can change their structures when the body needs more of a different type of protein. O C. They have the same amino acid sequence and are just folded differently. O D. Their structures are based on the amino acid sequences in their polypeptides.
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Richard knows he's a take-charge kind of person. He is a good student, and knows it is because of his hard work. What type of attribution is he using, and why do you think this is?
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1) What economic values does the rainforest offer other than its worth as timber?2) Based on this talk, why are people failing to preserve such assets as the rainforest?3) How are forests comparable to other forms of natural resources?4) How does Pavan believe we should think about the value of a mangrove tree?5) What are some potential solutions to the problems Pavan identifies?
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1) What does Green suggest is special about wood as a material?2) What special techniques does Green use to create wooden skyscrapers?3) What solutions does Green offer to the most commonly cited problems withwooden skyscrapers?4) According to the video, what misconceptions exist about wood as a buildingmaterial?5) Green suggests that there is something special about the experience of walkinginto a wooden building. Do you agree? Why?
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5.A student hypothesized that lettuce seeds.would not germinate (begin to grow) unlessthey were covered with soil. The studentplanted 10 lettuce seeds under a layer of soiland scattered 10 lettuce seeds on top of thesoil. The data collected are shown in theaccompanying table.Data TableSeed TreatmentPlanted under soilScattered on top of soilNumber of SeedsGerminated98To improve the reliability of these results, thestudent shouldA. conclude that darkness is necessary forlettuce seed germination.B. conclude that light is necessary for lettuceseed germinationC. revise the hypothesisD. repeat the experiment using a larger samplesize
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