AS Biology‚ Biological Molecules Revision Notes Distinguish between monomers and polymers: Monomers- Identical small molecules. Polymers- Chainlike molecules formed from the linking together of many similar. Distinguish between monosaccharides‚ disaccharides‚ and polysaccharides: Monosaccharides- Simple sugars; sugar molecules may be enantiomers due due to the spatial arrangement of parts around asymmetric carbons; raw material for synthesis of other organic molecules. Disaccharides-
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2. Biological Classification Classification The process of grouping living organisms into convenient categories based on simple characters is known as classification. 1. Two kingdom classification Carolus Linnaeus divided all living things into two kingdoms- Plantae and Animalia. 2. Five kingdom classification R.H. Whittaker divided all living things into five kingdoms- Monera‚ Protista‚ Fungi‚ Plantae‚ and Animalia. The main criteria for classification included o cell structure o thallus
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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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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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Stem Cell Research Adult stem cell research is providing opportunities to treat people with a various diseases and conditions. In 2010‚ a man’s ankle refused to heal so the doctor took bone marrow from the man’s pelvic bone with a needle‚ condensed it to about four teaspoons of rich red liquid‚ and injected that into his ankle. Four months later‚ the ankle was healed! Adult stem cells are found in all tissues of the growing human being and‚ according to latest reports‚ also have the potential
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Explanation of a Situation Where is Your Money Going? “I’m Barack Obama and I approve this message.” “I’m Mitt Romney and I approve this message.” These campaign ads appear on every channel and commercial break. A majority of the time‚ it’s to inform the viewers about what their opponent has done wrong in the past. The candidates travel across the country speaking about what they would change if they were elected as the 2012 to 2016 president. One topic that swirls around every candidate is what
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An Explanation of Terrorism After browsing through Stephen E. Atkins book Terrorism‚ I soon learned many interesting things regarding the history of terrorism. It seems this form of protest has been around since Biblical times. Also‚ the main goal of a terrorist is not to do damage to one peticular person or place‚ but to gain publicity for an idea they support. (page 1) Evidence of this can be found by looking at the recent past of the United States. The Oklahoma bombing was one man’s way
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information decays (fades away). This explanation of forgetting in short term memory assumes that memories leave a trace in the brain. A trace is some sort of physical/chemical change in the nervous system. Trace decay theory states that forgetting occurs as a result of the automatic decay or fading of the memory trace. Trace decay theory focuses on time and the limited duration of short-term memory. Decay theory assumes that memories have a physical or biological basis in the brain‚ and that the encoding
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Personal Identity Need Not An Explanation Introduction Personal identity seeks to investigate who you are‚ what you are‚ and to give an individual a sense of self. However‚ it is difficult to explain exactly what personal identity is. There are many theories and criteria that seek to pinpoint what exactly personal identity consists of‚ some imply that we are wholly material things; others imply that we are partly immaterial and partly material. There are some theories such as psychological continuity
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The beatitudes are eight statements taught by Jesus. They are concerned with virtue and how a believer in Jesus Christ can achieve that virtue. The Beatitudes are a map of life‚ a series of directives helping us on our journey to be with God. They also designate the actual condition of people who follow God’s guidelines. "Blessed are the poor in spirit‚ for theirs is the kingdom of heaven." In the book it states‚ We are poor in spirit when we recognize that everything we are and everything we have
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