You should bring your models to class and answer the questions in your exercise books.
modelling_the_human_ventilation_system_student_sheet.doc |
Mr Lovat Biology |
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Due next Wednesday (27th January) You should bring your models to class and answer the questions in your exercise books.
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Due Thursday 14th January. I am looking for EFFORT.
Read the following news story: http://news.bbc.co.uk/1/hi/sci/tech/5350068.stm The disease malaria kills at least a million people a year. DDT has saved many human lives from malaria, especially in Africa, by being used to kill mosquitos. Using what you know about bioaccumulation, write a description in your books for the public about the advantages and disadvantages of using DDT. Due Friday 15th January. I shall be looking for EFFORT in your work.
http://www.anorak.co.uk/288298/scare-stories/the-daily-mails-list-of-things-that-give-you-cancer-from-a-to-z.html/ Imagine you work for the Daily Mail’s PR department and have to reply to a number of worried people writing in scared that they will get cancer. You must write in a polite, professional style and assume that the worried reader failed their Biology O Level exams 25 years ago. Grade B/A Use this link to explain what a mutation is: http://www.bbc.co.uk/bitesize/higher/biology/genetics_adaptation/mutations/revision/1/ Grade A/A* Evaluate the evidence. Analyse the risk described. If an actual experiment has been conducted, how “reliable”, “valid” and “precise” is the study? If the article quotes a scientist, quickly google his/her name and find out how reliable a source he/she is. What is he/she actually saying and might his/her words have been misrepresented? Test on Friday 20th November on everything you've done this year...
3.1 understand the differences between sexual and asexual reproduction 3.2 understand that fertilisation involves the fusion of a male and female gamete to produce a zygote that undergoes cell division and develops into an embryo 3.3 describe the structures of an insect-pollinated and a wind-pollinated flower and explain how each is adapted for pollination 3.4 understand that the growth of the pollen tube followed by fertilisation leads to seed and fruit formation 3.5 understand the conditions needed for seed germination 3.6 understand how germinating seeds utilise food reserves until the seedling can carry out photosynthesis 3.7 understand that plants can reproduce asexually by natural methods (illustrated by runners) and by artificial methods (illustrated by cuttings) 2.49 understand why simple, unicellular organisms can rely on diffusion for movement of substances in and out of the cell 2.50 understand the need for a transport system in multicellular organisms 2.51 describe the role of phloem in transporting sucrose and amino acids between the leaves and other parts of the plant 2.52 describe the role of xylem in transporting water and mineral salts from the roots to other parts of the plant 2.53 explain how water is absorbed by root hair cells 2.54 understand that transpiration is the evaporation of water from the surface of a plant 2.55 explain how the rate of transpiration is affected by changes in humidity, wind speed, temperature and light intensity 2.56 describe experiments to investigate the role of environmental factors in determining the rate of transpiration from a leafy shoot 4.11 understand the biological consequences of pollution of air by sulfur dioxide and by carbon monoxide 4.12 understand that water vapour, carbon dioxide, nitrous oxide, methane and CFCs are greenhouse gases 4.13 understand how human activities contribute to greenhouse gases 4.14 understand how an increase in greenhouse gases results in an enhanced greenhouse effect and that this may lead to global warming and its consequences Test Wednesday 18th November
On everything done so far this year... 3.23 understand that division of a diploid cell by mitosis produces two cells which contain identical sets of chromosomes 3.24 understand that mitosis occurs during growth, repair, cloning and asexual reproduction 3.25 understand that division of a cell by meiosis produces four cells, each with half the number of chromosomes, and that this results in the formation of genetically different haploid gametes 3.26 understand that random fertilisation produces genetic variation of offspring 3.27 know that in human cells the diploid number of chromosomes is 46 and the haploid number is 23 3.13 understand that the nucleus of a cell contains chromosomes on which genes are located 3.14 understand that a gene is a section of a molecule of DNA and that a gene codes for a specific protein 3.15 describe a DNA molecule as two strands coiled to form a double helix, the strands being linked by a series of paired bases: adenine (A) with thymine (T), and cytosine (C) with guanine (G) 3.16 understand that genes exist in alternative forms called alleles which give rise to differences in inherited characteristics 3.17 understand the meaning of the terms: dominant, recessive, homozygous, heterozygous, phenotype, genotype 3.21 understand that the sex of a person is controlled by one pair of chromosomes, XX in a female and XY in a male 3.22 describe the determination of the sex of offspring at fertilisation, using a genetic diagram 3.9 understand the roles of oestrogen and progesterone in the menstrual cycle 2.90 understand the sources, roles and effects of the following hormones: ADH, adrenaline, insulin, testosterone, progesterone and oestrogen. 2.77 understand that organisms are able to respond to changes in their environment 2.78 understand that homeostasis is the maintenance of a constant internal environment and that body water content and body temperature are both examples of homeostasis 2.68 recall that the lungs, kidneys and skin are organs of excretion 2.69 understand how the kidney carries out its roles of excretion and osmoregulation 2.70 describe the structure of the urinary system, including the kidneys, ureters, bladder and urethra 2.71 describe the structure of a nephron, to include Bowman’s capsule and glomerulus, convoluted tubules, loop of Henlé and collecting duct 2.72 describe ultrafiltration in the Bowman’s capsule and the composition of the glomerular filtrate 2.73 understand that water is reabsorbed into the blood from the collecting duct 2.74 understand that selective reabsorption of glucose occurs at the proximal convoluted tubule 2.75 describe the role of ADH in regulating the water content of the blood 2.76 understand that urine contains water, urea and salts. 3.1understand the differences between sexual and asexual reproduction 3.2 understand that fertilization involves the fusion of a male and female gamete to produce a zygote that undergoes cell division and develops into an embryo. 3.8 describe the structure and explain the function of the male and female reproductive systems 3.12 understand the roles of oestrogen and testosterone in the development of secondary sexual characteristics. Due Wednesday 18th November.
Use the following: http://www.mhhe.com/biosci/genbio/virtual_labs_2K8/labs/BL_02/index.html To answer the following questions in your book. 1. Describe the relationship between substrate concentration and the reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the reaction rate as substrate concentration increases? 2. What is the maximum reaction rate for the lactase enzyme at pH 7? 3. Explain why the maximum reaction rate cannot be reached at low lactose concentrations. 4. What does your data indicate about the optimum pH level for this lactase-catalyzed reaction? 5. Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in temperature can significantly lower the reaction rate. Explain. Read the 6 revision sections on the following site (print them off as notes if you can) and then complete the online test.
Print the results page. http://www.bbc.co.uk/education/guides/z8wsgk7/revision Half term work - flipped classroom!
Learn and make notes on protein synthesis. Use the resources on the edexcel A level section of this website alongside the text book. Come back with evidence of the work you have done. We shall spend the first couple of lessons applying what you have learned... it will be obvious if you don't know it! DUE Wednesday 14th October.
You should create a poster (A4 paper) that goes into detail on a specific part of the digestive system allocated to you (see below). You should include: Grade C - complete labelled diagram Grade B - describe the function and process taking place Grade A - explain what happens if something goes wrong and potential treatments Grade A* - compare this part in humans with that of an animal of your choice and explain how the differences in structure might be an adaptation for that animal to survive to reproduce. Daniel: Mouth Sasha: Oesophagus Eddie: Stomach Alex: Duodenum Sophia: Ilium and Jejunum Bradley: Large Intestine Abigail: Rectum Louis: Anus Effie: Digestive enzymes Aaron: Oesophagus Jansen: Stomach Thomas: Duodenum William: Ilium and Jejunum Charlie: Large Intestine Temian: Rectum Lilya: Digestive enzymes Erica: Mouth Isla: Stomach Etienne: Duodenum Eithne: Large Intestine TEST - Thursday 1st October
Please refer to the programme of study on the digital archway to see what you'll be tested on: https://digitalarchway.ardingly.com/science-1/biology/igcse-biology/shell Pages 1 - 3; 9 - 11; 16 - 21 If you want to use practice questions: Page 14-15 questions 1, 4, 5 and 6; page 22 questions 1-3; pages 22-25 questions 1, 4, 7 and 8. You don't have to do these questions - but you might want to use them to help prepare for the test. |
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April 2016
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