Centre No. Candidate No. Paper Reference(s) Surname Initial(s) Signature 4325/2H Examiner’s use only London Examinations IGCSE Biology Paper 2H Team Leader’s use only Higher Tier Wednesday 11 May 2005 – Morning Time: 2 hours Question Leave Number Blank 1 2 3 4 5 Materials required for examination Nil Items included with question papers Nil 6 7 8 Instructions to Candidates In the boxes above‚ write your centre number and candidate number‚ your surname
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buying a local honey‚ as this means the bees collected the pollen from the exact plants that you are allergic to‚ which “immunises” you against the right kind of pollen. While some foods can protect you from allergy symptoms‚ others can contribute to your congestion. Dairy products are especially notorious for causing the blood vessels in your nose to swell‚ contributing to increased congestion. Those who experience seasonal allergies due to pollen should avoid melons‚ bananas‚ cucumbers‚ chamomile and
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Name: Joshua Beh Date: 5/30/12 Per. 3 Biology Semester 2 Final Study Guide 2012 Ch. 13. 1. Define population - Consists of all the individuals of a species that live in a specific geographical area and can interbreed. 2. Define natural selection. - The differential rate of reproduction. 3. Explain how gradualism and punctuated equilibrium relate to evolution. - Both involve the species evolving either over a long period of time or rapidly. 4. What does a paleontologist do? - Scientists
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I. Executive Summary A. Type of Business Nature The nature of the business is bee farming. The proponents’ primary purpose is to examine the impact of interventions in bee-keeping. Beekeeping (apiculture) does well in a wide range of agro-ecological zone and fits into a broader category of diversification of agricultural activities. The intervention provides an avenue for increased income. Name The proponent chose “BAMBU BEE FARM” as a business name. It’s because the word BAMBU
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pollution caused by pollen drift is spreading in GM crops cultivation areas such as the USA and Canada. GMO contamination will occur once GM crops are cultivated. Therefore‚ the co-existence between GMO farming and conventional farming or organic farming is very difficult. BBC News reported the result of a study conducted by the UK-based National Pollen Research in 1999. The result showed that airborne GM pollen can be carried hundreds of kilometers in 24 hours‚ and the pollen was found 4.5 km from
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7150/ijbs.3697 3. Effect of Honey‚ Dextromethorphan‚ and No Treatment on Nocturnal Cough and Sleep Quality for Coughing Children and Their Parents. Arch Pediatr Adolesc Med. 2007;161(12):1140-1146. doi:10.1001/archpedi.161.12.1140. 4. Birch Pollen Honey for Birch Pollen Allergy – A Randomized Controlled Pilot Study. Int Arch Allergy Immunol 2011‚ 155:160-166 5. Manuka honey inhibits the development of Streptococcus pyogenes biofilms and causes reduced expression of two fibronectin binding proteins. Microbiology
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Genetics Practice Problems‚ book #1 1. In peas‚ the gene for tallness is dominant to the gene for shortness. What offspring phenotypes and genotypes would be expected from the following crosses‚ and in what proportions? a. Heterozygous x heterozygous b. Heterozygous x homozygous tall c. Homozygous tall x homozygous short 2. If blue eye color in man is recessive to all other colors‚ could: i. Brown eyed parents have a blue eyed child
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cancer killing biochemicals. Another aspect of the dangers of marijuana is trouble breathing‚ or asthma. Some people are allergic to cannabis pollen‚ resulting in asthma and inflammation of the throat. In a test was given in Nebraska‚ 122 people were given skin tests for cannabis pollen and other allergens. Forty-eight of the 122 tested positive for cannabis pollen‚ and of the forty eight who tested positive‚ twenty two experienced respiratory symptoms during the test period. Cannabis may also affect
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outside if so and the temp needs to be about 60 to 62 degrees It prefers moist soil and lots of sunshine and fertilizer. The gardenia reproduces in the following steps below….. The anther produces pollen‚ or sperm‚ which has traveled to the stigma‚ the portion of the pistil is designed to capture pollen. The pollen then travels down the style‚ the long tube leading down through the pistil‚ to the ovaries where the ovules are kept or stored. Once the fertilization occurs‚ the ovules will transfer into seeds
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Both directional and disruptive selection show the distribution of phenotypes. Distribution selection takes place when an extreme phenotype is favored‚ and the distribution curve shifts in that direction. Antibiotic resistant bacteria are an example of directional selection. When an antibiotic is used‚ some bacteria may survive causing it to produce bacteria that is resistant to that antibiotic. Disruptive selection occurs when two or more extreme phenotypes are favored over an intermediate phenotype
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