Give an account of protein structure and function Protein structure 1 Proteins consist of amino acids joined together (in chains) 2 A protein is unique because of the sequence of amino acids 3 The amino acids are joined by strong peptide bonds 4 to produce the primary structure 5 Further (weak) hydrogen bonding between acids 6 produce the secondary and tertiary structures A maximum of 4 marks can be gained from this section. Protein function 7 Some proteins are enzymes + named example
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the structure of DNA and discuss how it facilitates the ability of DNA to act as genetic material • Compare and contrast prokaryotic and eukaryotic chromosomes • Describe the process of DNA replication as a semi-conservative process. Compare and contrast the synthesis of the leading and lagging strands in DNA replication. • Explain how the genotype of an organism determines its phenotype. • State the central dogma of genetics and explain the roles of DNA and RNA in polypeptide
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5.4.1: Synthesis of a Protein Procedure 3. Transcribe the DNA into mRNA Sequence A: AGA AGG GAG GAU UUG CAA GGU GGC CAA GAA UUA GGC GGC GGU CCC GGG GCG GGG AGU CUU CAA CCA Sequence B: AGU CUG CAA AAA CGG GGC AUU GUU GAA CAA UGU UGU ACC AGU AUU UGC AGU CUC UAC CAG UUC GAG AAU UAC UGA Sequence C: AUG UUU GUA CAU UUG UGU GGG AGU CAC CUG GUU GAG CGU UGU AUU UGG UUU GUG GCG AGC GCG GCU UUU UCU AUA 4. Beginning sequence: Sequence C since it starts with AUG (the starting codon) Middle sequence:
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The evolutionary approach suggests that our behaviour is determined through natural selection; therefore it is coded into our genes through how we have adapted. It is a biological approach and states nature over nurture. A criticism of this approach is that it is determinist as it suggests that the way we behave is dictated through natural selection‚ for example in gender roles men being strong hunters and wanting a younger female partner. It ignores other suggestions‚ such as how we are brought
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Cuttlefish Evolutionary History The cuttlefish are an amazingly developed animal species with many specialised traits that make them perfectly suited to most‚ if not all‚ types of underwater environments. This is the animal this presentation will be looking into. Evolution is commonly described as a theory‚ However that is a common misconception‚ all different types of evolution‚ e.g. Darwinism and Lamarckism‚ are actually considered both fact and theory. As palaeontologist Stephen Jay Gould says
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main source of evidence. Notoriously unreliable‚ these techniques have since faded away to the stunning reliability of DNA forensics. In 1984‚ British geneticist Alec Jeffreys of the University of Leicester discovered an interesting new marker in the human genome. Most DNA information is the same in every human‚ but the junk code between genes is unique to every person. Junk DNA used for investigative purposes can be found in blood‚ saliva‚ perspiration‚ sexual fluid‚ skin tissue‚ bone marrow‚ dental
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Evolutionary Perspective Paper The evolutionary perspective is the most intriguing perspective and the one I agree with the most. Uniquely the two biggest functions for human beings is survival‚ and the second reproduction We could all agree that when we are brought into this world our most important function is undoubtedly our survival. What would happen if human beings and animals couldn’t experience fear? There would be no chance of survival‚ without fear how would you recognize a predator and
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Evolutionary explanations of aggression Evolutionary psychologists argue that reproductive challenges faced by our ancestors can explain the aggressive behaviour seen in people today. A man can never be certain that he is the father of his wife’s children unless he prevents her having relationships with other men. This can explain why male jealousy is often cited as a cause of domestic violence. In many countries it is seen as acceptable to murder an adulterous wife or her lover e.g. among the Nuer
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The Evolutionary Theory of Attachment Bowlby’s evolutionary theory consists of a number of essential factors. The evolutionary theory of attachment as proposed by John Bowlby (1907-1990) suggests that attachment‚ in terms of adaptation‚ is essential for survival. In order to progress healthily‚ children are born with an innate tendency to form attachments. This means that infants are pre-programmed to become attached to their caregiver. This is supported by the research of Lorenz (1952) in
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The evolutionary model of jealousy implies that jealousy responses between men and women evolved to aid them with the different reproductive challenges faced by the two sexes. It states that‚ when it comes to infidelity‚ men are concerned with their female partner becoming pregnant by another man and are therefore more likely to feel jealous in response to sexual infidelity cues. Women are more concerned with their male partner diverting emotional and material resources required for raising her children
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