The Immune System CHAPTER 4 Learning objectives • By the end of this chapter‚ students should be able to : i) Differentiate the three line of defense system in the human body ii) Describe the agglutination process in the case of the ABO blood group iii) Differentiate between active and passive immunization iv) Discuss the homeostatic imbalances in the immune system Introduction • Barriers help an animal to defend itself from the many dangerous pathogens it may encounter • The immune
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varies from gymnosperms‚ dicotyledonous angiosperms‚ and monocotyledonous plants. There are three monolignol monomers that make up the three different kinds of lignin: p-hydroxyphenyl (H)‚ guaiacyl (G)‚ and syringal (S) respectively. Gymnosperms are mostly G with small amounts of h‚ angiosperms are a mixture of G and S with very little H. monocotyledons are an even mixture of all three monomers. (Boerjan W‚ et. al‚ 2003) The term lignin was first used by de Candolle in 1819. It comes from the world
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Additionally in the pure state all polymers are colourless and easy to produce any coloured products by the addition of dyes and pigments. Polymer`s physical‚ mechanical and electrical properties depends on its structure‚ temperature and bonds between the monomers. In general‚ tensile strength increases with polymer chain length and cross linking of polymer chains. For example‚ as chain length is increased‚ melting and
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MATERIALS REVOLUTION UNIT REVISION BOOKLET Vikram Mahal How To Use this Booklet: This booklet has been created by addressing all the points on the OCR B salters specification for the section‚ what’s in medicine. I advise reading through the Book‚ highlighting or underlining words written in ALL CAPITALS. I also suggest making a spider diagram or mind map to summarise key points and help the information here stick in your mind. You could also draw your own images by points on this
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Session 1 We use the scientific method every day. Imagine your car doesn’t start one morning before school. Which of these is a reasonable hypothesis regarding the problem? I’m out of gas. A scientific theory explains what we know to this date about a natural event. Which of the following is a theory? There is molecular and biochemical evidence that all organisms are related. Choose the answer that best describes the sequence of the scientific method. observation‚ hypothesis‚ experiment‚ conclusion
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BIO100 Biology Concepts Lab 2: Biochemical Analysis Dec 12 2014 | Logged in as : MAV2020753 Introduction Assessment Feedback Thank you for your participation in this assignment. Your work has been submitted to your instructor. Total score: 25 out of 100‚ 25% Question Feedback Question 1 of 20 The subatomic particles that play the greatest role in cellular chemical reactions are electrons. protons. neutrons. isotopes. 0 out of 5 The correct answer is: electrons. Question 2 of 20 The
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discovered that RNA could perform both duties. In 2006‚ Ferris published a paper demonstrating that montmorillonite clay (which is present on Earth today and caused by volcanic activity) was an efficient catalyst for the formation of RNA oligomers from monomers under laboratory conditions (Ferris). Another important experiment indicated that RNA that has one type of catalytic properties can evolve to RNA that has another type (Walter and Engelke). Combined‚ these two experiments give evidence that RNA was
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Chemistry (the etymology of the word has been much disputed)[1] is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions.[2] It is a physical science which studies various substances‚ atoms‚ molecules
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1) see figures 1-5 2) Proteins are polypeptide chains consisting of monomers called amino acids‚ which are made up of carbon‚ hydrogen‚ oxygen and nitrogen. Amino acids are made up of an amino group‚ an R group a carboxyl group and an alpha carbon‚ the different R groups of each individual amino acids determines which amino acid they will form. Amino acids bond through covalent peptide bonds this occurs via a condensation reaction‚ which is when one amino acids hydrogen & oxygen (carboxyl group)
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1-14) h. Arrangement of atom in metals i. What are alloys? j. The arrangement of atoms in alloys 4) Synthetic Polymers------------------------------------------------------(15-17) k. What are polymers? l. Monomers in synthetic polymers m. Should we continue using synthetic polymers? 5) Glass and Ceramic--------------------------------------------------------(18-20) n. Glass o. Ceramics 6) Composite Materials---------------------------------------------------(21-22)
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