Biological Membrane Study: HCl‚ NaOH‚ SDS Objective and Hypothesis: The objective of this lab is to determine the effects of SDS‚ HCl‚ and NaOH on red cabbage cell membrane. Prior knowledge can tell us that the red cabbage is a red-purple color due to a pigment called anthocyanin. This is what we will be testing in the experiment. We also know that HCl is a strong acid (very low pH) and that NaOH is a strong base (very high pH). From information learned in this course (lecture/lab) we can assume
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Chlorophyll Extraction This easy science project shows simple and efficient method of chlorophyll extraction from a plant. This is only a demonstration of working method which can be refined and used for a full scale science project. Plants contain many pigments in different proportions. For flowering plants it’s mostly a combination of chlorophyll-A‚ chlorophyll-B‚ pheophytin and Carotenes. These pigments have shades of green‚ blue green‚ grayish‚ and yellow-orange. Their concentration is
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commonly known as Turk ’s Cap (Yoruba; Awororoso‚ Igbo; Ogwuaki or Aki Ozura) thought to originate from Malaysia. The croton plant is a tropical evergreen plant widely distributed in southern part of Nigeria. The seeds are of a dull cinnamon-brown colour and oblong outline; they are about 12 mm. in length‚ and resemble castor seeds in size and shape‚ though‚ they are rather more angular in transverse section‚ the ventral and dorsal surfaces being separated by a prominent line. The kernel is yellowish
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News on February 07‚ 2011. The title of the article is “It will take more than rebranding to make tar sands oil ‘ethical’ “. In this article‚ David and Faisal point out the result of extracting oil will cause immense harm especially from the PESTEL perspective. They also warn the government to stop using spin doctors and marketing techniques through re-branding and calling it “Ethical Oil”. After reading quite a few articles on this topic‚ both from the political‚ economic and environmental perspective
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The biological explanation for Anorexia Nervosa focuses on the role of neurotransmitters. It suggests disturbances in the levels of serotonin and dopamines are characteristic of anorexia. Bailer et al compared serotonin activity in women recovering from restricting anorexia with those recovering from purging type anorexia with a healthy control group. They found that the group recovering from purging type anorexia had higher serotonin activity. They also found the highest levels of serotonin in women
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D/E explanations of Anorexia Nervosa (24 marks) Anorexia Nervosa (AN) is a type of eating disorder characterised by extreme loss of weight and anxiety associated with food and weight gain. The 4 major symptoms of AN are body weight 85% or less of normal weight for age and height‚ distorted perception of body image (thinness is vital to self-esteem)‚ intense fear of being overweight or putting on weight and amenorrhoea (the loss of 3 consecutive periods). There is the biological and psychological
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DNA EXTRACTION FROM KIWI ISGR SCIENCE Aalah Yousif‚ Ella Sobek April 27‚ 2012 Background All living organisms (plants‚ animals‚ and bacteria) are made up of cells. Any cell consists of many parts but the parts that play the key roles are the nucleus‚ cell membrane‚ and cytoplasm. The nucleus is like the “brain” of the cell (that also contains DNA). The cell membrane is like a wall that guards the cell. And the cytoplasm is a jelly-like substance which contains other smaller organelles like
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Biological Explanations of Crime Biological Explanations of Crime Crime Statistics from the Chicago Police Department Biological Explanations of crime Cesare Lombroso William Sheldon Neurological Defects Conclusion Biological Explanations of Crime In society today‚ crime rates are increasing at alarming rates. For decades‚ extensive amounts of research have been collected and analyzed in attempts to find out why people commit crime. In the city of Chicago‚ according
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Psychological Explanation is based on someone’s mental behavior. A person’s personality and learning factors can cause them to commit a crime. According to some early childhood experiences it can have a major effect on personality and development. Also according to Psychological Explanation crime is stemmed from abnormal urges and desires. Many link criminal behavior to certain concepts as innate impulses‚ psychic conflict‚ and repression of one’s personality.The Psychological Theory relates
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Discuss one or more Biological Explanation for Schizophrenia The biological theory on Schizophrenia is a determinism theory which states that Schizophrenia is caused by our genetics and things that are involved in our bodies. The biological theory states that the cause of Schizophrenia is due to issues such as our genes‚ and dopamine levels‚ and therefore it can be cured by looking at these issues. The first biological explanation I will look at is the genetic theory of Schizophrenia. There
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