UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level BIOLOGY Paper 1 Multiple Choice October/November 2005 1 hour Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 5090/01 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and candidate number on the answer sheet in the spaces provided
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1. Evidence of evolution suggests that the mechanisms of inheritance‚ accompanied by selection‚ allow change over many generations outline the impact on the evolution of plants and animals of: * changes in physical conditions in the environment * changes in chemical conditions in the environment * competition for resources Changes in physical conditions in the environment * These include natural conditions‚ such as temperature and the availability of water. * The Australia landmass
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Plant Kingdom (Biology) | Close | | Study Material | | Division Algae Classification within Angiosperms * Artificial system of classification * Given by Linnaeus * Based on vegetative characters and androecium structures * Gave equal importance to vegetative and sexual characteristics * Natural system of classification * Based on morphology‚ anatomy‚ embryology‚ and phytochemistry * Given by George Bentham and Joseph Dalton Hooker * Phylogenetic
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when the world ’s first test tube baby‚ Louise Brown‚ was introduced to the world. Her birth was less complex‚ in that her genes remained untouched and instead she simply gestated in a uterus after being transplanted through the in vitro fertilisation process. However‚ the Nash family sparked an ethical debate over the alteration and use of a baby ’s genes‚ a debate that has since grown in argumentative evidence of the reasons for and against the development of the possibility
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Centre Number For Examiner’s Use Candidate Number Surname Other Names Examiner’s Initials Candidate Signature Question General Certificate of Secondary Education Higher Tier January 2013 Science A BL1HP H Unit Biology B1 Biology Unit Biology B1 Wednesday 9 January 2013 9.00 am to 10.00 am Mark 1 2 3 4 5 6 7 8 TOTAL For this paper you must have: a ruler. You may use a calculator. Time allowed 1 hour Instructions Use black ink or black ball-point pen. Fill in the boxes at the
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describing the aetiology or symptoms along with any known‚ long and short term effects. The everyday function of the male reproductive system is to produce‚ store and transport sperm and semen and to discharge sperm into the female vagina for fertilisation to occur. The male reproductive system is also responsible for producing the male sex hormone‚ testosterone. [pic] Image 1 Hypospadias is an abnormality of the urethra and penis which can cause problems with passing urine and erections (patient
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and cons to animal testing it is clear that animal testing is wrong‚ even if there have been outcomes that have turned out well. Even though animal testing can help create cures‚ they have shorter life cycles‚ and sometimes finding cures for them‚ vitro testing‚ animals suffering‚ and the animals being extremely different from humans are all reasons why animal testing is a horrible thing. Animal testing is a great thing because they have shorter life cycles‚ leading to medical breakthroughs
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of the tablet was determined at predefined time intervals over a period of 8 h. The swelling index (SI)‚ expressed as a percentage‚ and was calculated from the following equation‚ In-vitro buoyancy
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In Vitro Reproductive Development of Peanut‚ Arachis hypogaea L.‚ as Influenced by Plant Growth Regulators‚ Sucrose and pH1 Q. L. Feng‚ H . E. Pattee*‚ and H. T. Stalkef ABSTRACT Research on in vitro embryo culture in Arachis has the objective ofrescuinginterspecific hybridembryos which abort before they reach maturity. This study explored effects ofthe three exogenous plant growth regulators 1naphthaleneacetic acid (NAA)‚ gibberellic acid (GA‚)‚ and 6-benzylaminopurine (6-BAP); sucrose; and
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DISCUSSION ESSAY Human cloning: right or wrong? Since the arrival of the scientific temper in humankind around the 17th century‚ specially with the creation of the Royal Society‚ human beings began to discover things that once were thought impossible‚ and nowadays improvements in technology and science have allowed wonders like cloning. The concept of cloning may be defined as "the creation of a genetically identical copy of an existing‚ or previously existing‚ being or growing cloned tissue from
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