biology FOLIO BIOLOGY POLLUTION NIK ‘AINAA SYAKIRAH BT NIK GHAZALI 5 IBNU SINA INTRODUCTION Pollution is the introduction of contaminants into a natural environment that causes instability‚ disorder‚ harm or discomfort to theecosystem i.e. physical systems or living organisms. It can also be define as any undesirable changes in physical‚ chemical or biological characteristics of the natural environment‚ brought about when harmful substances or energy released by human activities. Pollution
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Big Idea 2 Biological systems utilize free energy and molecular building blocks to grow‚ to reproduce and to maintain dynamic homeostasis. Living systems require both free energy and matter to maintain order‚ grow and reproduce. Organisms employ various strategies to capture‚ use and store free energy and other vital resources. Energy deficiencies are not only detrimental to individual organisms; they also can cause disruptions at the population and ecosystem levels. Biological systems must both
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Biology Exam Review Unit One – Biochemistry What is an isotope? Isotope - An isotope is all atoms of the same element that have the same number of protons‚ but they may have different numbers of neutrons in the nucleus. - This means that all atoms with the same atomic number can have different atomic masses. - Because they have the same number of protons and electrons‚ they behave exactly the same in chemical reactions. Radioisotope - The nuclei of some isotopes of an element are unstable
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import java.io.*; class ADCtours_travels { public static void main(String args[])throws IOException { BufferedReader I=new BufferedReader(new InputStreamReader(System.in)); System.out.println("Welcome to ADC Tours & Travels. We promise you the best transport facilities more comfortable n @ best prices. Cargo facilities available. How can we help you?"); System.out.println("Choose from the following options"); System.out.println("Press (1) for Air Ticketing"); System.out.println("Press
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Question 1 Write a composition of reasonable length [350-400 words] in any one of the following: [25] (a) School is a temple of learning. But this belief is fast changing now. Keeping in view the trend adopted by the students of today‚ give your views on the statement. (b) Man is often ruined by his pride. (c) “All is well that ends well”. Narrate an incident that reveals the truth of the statement. (d) Relate a short story which has as its theme “Regret but Too Late to
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Genetic Traits Exercise: Introduction: The pioneer of modern day genetics was an Austrian Monk named Gregor Mendel‚ who established the basic laws of heredity from his studies with pea plants in the late 1800s. Mendel’s fundamental genetic principles may be applied to a variety of traits from many different organisms. Each genetic trait‚ such as flower color‚ is regulated by a pair of genes called alleles. These alleles are found at particular places on the chromosomes called loci. During meiosis
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Test Paper ONE SECTION A (40 MARKS) Question 1. (a) Name two types of programming technique with examples. [4] Ans. Structured Programming (eg‚ C‚ BASIC); Object Oriented Programming (eg‚ C++‚ JAVA) (b) Explain type casting with an example. [2] Ans.The explicit conversion of a wider data-type into a narrower data-type is called type-casting. Example: double a = 3.567;
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is broken down into its monomers. [pic] Figure 1.1 (i) Identify monomer X‚ monomer Y and process A. (3 marks) (ii) When Benedict test was performed on sucrose‚ it was observed that the blue colour remained unchanged. Make a conclusion based on this observation. (1 mark) (iii) Monomers X can undergo process B to form polysaccharide P. This polysaccharide can exist in two forms as shown in Figure 1.2.
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Franklin were also studying DNA. The Cambridge team ’s approach was to make physical models to narrow down the possibilities and eventually create an accurate picture of the molecule. The london team took an experimental approach‚ looking particularly at x-ray diffraction images of DNA. In 1951‚ Watson attended a lecture by Franklin. She had found that DNA can exist in two forms‚ depending on the relative humidity in the surrounding air which helped her deduce that the phosphate part of the molecule was
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Biology Project Autumn Brown 3rd block Mrs. Stephens More than 2‚000 years ago‚ Aristotle began grouping plants and animals into various categories. Although he did not consider the idea that different organisms were related by descent‚ he devised a system that placed these organisms in a hierarchy. Through classification systems‚ scientist have found it easier to find answers to important questions. This way
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