Nitrogen Cycle Questions 1. Nitrogen is both the __most abundant element__ and in organisms it is the raw material of two main macromolecules __ammonia and nitrite which build proteins and _nitrates which build your genetic material‚ DNA. 2. In the atmosphere it is found in the form of N2 which is __nitrogen gas____. 3. These Nitrogen molecules then need to go through a process called __nitrogen fixation__ in order to be converted into molecules that living organisms can use readily. 4. Two forms
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Question 1 (a) Name the following: (i) The phase of cardiac cycle in which the auricles contract. Systole (ii) The organ where urea is produced. Liver (iii) The hormone that helps increase the reabsorption of water from the kidney tubules. ADH (iv) Chemical substances produced by micro organisms that can kill or inhibit the growth of other micro organisms. [4] (b) State the main function of the following: (i) Chordae tendinae It holds the valves of the heart in place. (ii) Lymphocytes
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1. Living organisms play an important role in the recycling of many elements within an ecosystem. One such way this idea can be proven is through the study of carbon in an ecosystem. Plants‚ for starters‚ are a major part of this carbon cycle. During photosynthesis‚ plants remove carbon dioxide from the atmosphere and release oxygen as a waste product. Another major contributor to this vital cycle is the human being. The average human being goes through respiration each day to help maintain
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BIO 108 Take Home Chapter 26 Test Due: March 5‚ 2013 This test contains 11 questions‚ each worth 10 points. The highest possible score is 110%. 1. In your life‚ you probably have had before compared organisms and categorized them according to their common and distinct characteristic features. Through educational settings‚ you probably also have gained insights into similarities and differences between species. On the second page of this test‚ arrange the following species into your own phylogenetic
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AP Biology Cellular Respiration – Part 1 (Associated Learning Objectives: 1.15‚ 1.16‚ 2.2‚ 2.4‚ 2.5‚ 2.13‚ 2.14‚ 2.22‚ 4.1‚ 4.4‚ 4.17) Important Content from previous topics: 1) The electron transport chain is a series of redox reactions‚ occurring on a membrane‚ intended to create a concentration gradient and there in a source of potential energy. 2) Redox reactions are just the transferring of electrons from one molecule to another molecule. 3) Carbohydrates‚ sugar‚ are primary energy
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need to understand what the problem of evil‚ the free will response‚ and divine foreknowledge is. After viewing the material‚ I concluded that free will is a possible response to the problem of evil because people choose their actions. Others say that free will is not the cause for evil because God has foreknowledge. However‚ even if God does know everything before it happens‚ this does not mean he forces us to take those actions and takes away our free will. First‚ the problem of evil is the attempt
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1. What is the relationship between rate of ion exchange and surface-to-volume ratio? - As the surface-to-volume (SA:V) decreases the rate of ion exchange will also decrease. 2. Why is it important for a cell to have a large surface-to-volume ratio? - If the SA:V is too small then then rate of ion exchange will decrease‚ if this rate of ion exchange is too low then the cell will no longer be viable. 3. Which is more efficient at exchanging materials‚ a small or a large cell? EXPLAIN
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Research Question People may think of fruit as a sweet‚ healthy option for a snack. What those people do not know is that some of those fruits can be very damaging to their teeth and to their bodies. One reason for this is that a variety of commonly digested fruits are extremely acidic. This experiment will test the pH level of everyday fruits to see how acidic they actually are. When eaten‚ which fruit will have the lowest pH (be the most acidic)? Hypothesis A sign that a fruit is acidic is
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Edward O. Wilson -- known as the "father of biodiversity‚" -- said‚ "It is reckless to suppose that biodiversity can be diminished indefinitely without threatening humanity itself." Abiotic component From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search In ecology and biology‚ abiotic components (also called abiotic factors) are non-living chemical and physical factors in the environment‚ which affect ecosystems. Abiotic
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Response to Essay Questions for Teaching Position in High-Needs School Instructions as stated on application: Answer each question in a short essay format (no more than 300 words); be sure to address all parts of each question. The answers to these questions are considered a critical part of your application. Please spend time crafting your answers and provide your responses to these application questions in the spaces below. (Be sure to identify each instruction‚ and frequently review to assure
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