Title: Counting the Number of Yeast Cells in a Suspension using Haemocytometer Objective: To estimate the number of cells of yeast per mm3 in five different dilutions of yeast suspension. Introduction: Biologists often need to count the density of cells in a liquid. “Density of cells” means “the number of cells per unit volume of liquid”. For example‚ they might want to find out the density of red blood cells in blood plasma‚ the density of bacteria in milk‚ or the population of Paramecium sp
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Title: TOK Essay 1/2012 Question: When should we trust our senses to give us truth? Name: Syaza Yasirah Bte Abu Bakar Class: P2 Index number: 14 Word Count: 1439 The Ways of Knowing of sense is related to empirical observation. From empiricism we might get facts‚ knowledge and truth. In this case‚ when our senses are reliable‚ it is defined as trust. Truth can be determined based on the three theories of truth. Although none of them is entirely satisfactory‚ each of the theories
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Early this month we finished our final TOK presentation. I did mine with Faizaan‚ and we chose to take up the subject of philanthropy. The real reason that people give in the first place is a very controversial and relevant topic‚ and so we thought it would make a good topic for a presentation. It was very important for us to be interested in the topic we were going to be presenting‚ as we would be spending so many hours doing work on it- we are both interested in business and aspire to become businessmen
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new ways of thinking about what is already known than to discover new data or facts. To what extent would you agree with this claim?” According to the Miriam-Webster dictionary‚ data can be defined as factual information used as basis for reasoning‚ discussion‚ or calculation. By the same dictionary‚ fact is defined as a piece of information presented as having objective reality. In this essay‚ it is vital to distinguish that the issue the question addresses is whether discovering new ways of
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risk for completely disproving anything that it is trying to prove. Falsification - conjections and refutation Poppers method is based on conjectures and on refutations. There is no mechanical way of coming up with agood hypothesis. We need an idea to help us interpret observes dara in a different way at what point in the universe did steven hawking think that maybe light can be bent afterall This is perhaps what copernicus did when he suggeserd that the earth is moving around the sun howevr
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Emotions Emotion: A state of arousal involving facial and body changes‚ brain activation‚ cognitive appraisals‚ subjective feelings‚ and tendencies toward action‚ all shaped by cultural rules. Arousal- excited state; elevated state of emotion. (Can be positive or negative) Brain activation- electrical sparks; neurons Appraise- an act of assessing someone or something. Subjective feeling- feeling perceive by the person with the feelings Tendency to act- The action of being sad is crying
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“The possession of knowledge carries an ethical responsibility”- Tanmay Dhanopia 11th C As we all know that possession of knowledge carries an ethical responsibility‚ sometimes both ethical responsibility and knowledge confuses us in making certain decisions. One fine morning I was sitting in my house’s balcony enjoying the lovely weather‚ I started reading a newspaper whose headline which was “the improvement in cosmetics by animal testing” attracted me as the whole article was providing details
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Mathematics Notes Introduction: * Characterized as a search for abstract patterns * The fact that if you take two of anything and another two you end up with four of that thing * Any circle no matter the size‚ if you take its circumference divide in by its diameter you end up with the value 3.14… * Mathematics not only gives certainty but practical value * Galileo: book of nature is written in mathematics * Mathematics also “leaves us with nowhere to hide” because
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“To what extent is our knowledge in science certain?” People usually become certain of things after they have been proven to be true. The question we ask ourselves is: “To what extent is our knowledge in science certain?”. Well we may not be a hundred percent sure that what we know is true‚ yet when it comes to facts that have been proven by scientists‚ people do believe them‚ as they are perceived to be a worthy source of information‚ especially when experiments come along the observation with
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Alexys Puch V B Titulo Prescrito: "Se puede progresar en las ciencias naturales‚ pero en las artes no es posible". ¿En qué medida está de acuerdo con esta afirmación? Escogí este título porque me interesa mucho como se progresa en la ciencias‚ debido a que las ciencias son un área que le tengo mucho interés‚ y además me gustaría saber si de la manera de cómo se progresa ahí‚ también se puede progresar en otras cosas también‚ en este caso en el arte. Cuestiones del conocimiento: ¿En qué medida
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