the aorta is full of oxygen. The oxygen-rich blood travels throughout the body and its system of arteries into the smallest arterioles. 3 Open and Closed Systems The open circulatory system: The open circulatory system is common in mollusks and arthropods. Open circulatory systems, which evolved in
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AC 1.1 By Life Processes common to living organisms Laura Judges TABLE OF CONTENTS Chapter 1 page Introduction to life processes 2 Chapter 2 page Movement 2-3 Chapter 3 page Repoduction 3 Chapter 4 page Sensitivity 3-4 Chapter 5 page Growth 4 Chapter 6 page Respiration 5 Chapter 7 page Excretion 5-6 Chapter 8 page Nutrition 6-7 Chapter 9 page Conclusion 7-8 Chapter 10 page Bibilography 9 Introduction to life processes The most basic of living things consist of just one single cell for
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DRINKING WATER Drinking water or potable water is water safe enough to be consumed by humans or used with low risk of immediate or long term harm. In most developed countries, the water supplied to households, commerce and industry meets drinking water standards, even though only a very small proportion is actually consumed or used in food preparation. Typical uses (for other than potable purposes) include toilet flushing, washing and landscape irrigation. Over large parts of the world, humans
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Mega-Group Protozoans (Protist) - unicellular eukaryotes lacking collagen and chitinous celle walls; all nonphotosynthetic in primitive condition * Alveolates – possess distinctive membrane bound sacs * Ciliphorates – all individuals possess 1 micronucleus and 1 macronucleus * Dinoflagellates – bears 2 structurally distinct flagella; bioluminescence; flagella beat in patter, ‘whirl’ * Apicomplexa – endo parasitic (needs vectors); adults sessile * Flagellates – possess
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Disease and Evolution The human body has been plagued with diseases since the beginning of time—pathogens like viruses and bacteria have made us privy to Mother Nature. As humans evolve, so do the diseases we are susceptible to. Some diseases that were once rare have become common, others have disappeared and newer, more daunting ones have emerged. Many of these changes have taken place in the wake of important transformations in human civilizations and ecology. It is therefore feasible to propose
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A variety of chemicals have been shown to disrupt female reproductive function throughout the lifespan in laboratory animals and humans (e.g., diethylstilbestrol). These effects include the disruption of normal sexual differentiation, ovarian function (i.e., follicular growth, ovulation, corpus luteum formation and maintenance), fertilization, implantation, and pregnancy. Only a few agents are associated with direct interference with the endocrine reproductive axis. Examples are those with estrogenic
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Introduction Zoonotic diseases are infectious diseases which can be transmitted from animals to man. Due to frequent contact and domestication of wildlife animals, zoonotic diseases are increasingly becoming more prevalent. Public parks and gardens are home to abundant populations of birds. One of the most frequent species known to thrive in such areas are feral pigeon (Columba livia). Although there are few reports of disease transmission between pigeons and humans, their close interaction
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ANIMAL REPRODUCTION & DEVELOPMENT Dr Ilma • The two earthworms in this picture are mating • Each worm produces both sperm and eggs, which will fertilize – And in a few weeks, new worms will hatch Asexual And Sexual Reproduction • Both occur in the animal kingdom • Asexual reproduction is the creation of new individuals – Whose genes all come from one parent • Sexual reproduction is the creation of offspring – By the fusion of male and female gametes to form a zygote Mechanisms
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Animal Diversity Part I Introduction One of the primary goals of the second half of Biol 106 is to understand evolutionary relationships among animals and to gain an appreciation for the diversity of animal form and function. The huge diversity of animals requires us to divide our survey of different animals into a number of labs. Because of time limitations, we will consider only the major groups of animals, but your textbook can provide information about other groups represented by few or little
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A SURVEY ON THE POPULATION OF POMACEA CANALICULATA (GASTROPODA: AMPULLARIIDAE), MELANOIDES TUBERCULATTA (GASTROPODA: COCHLICELLIDAE) & LUMBRICUS TERRESTRIS (OLIGOCHAETA: LUMBRICIDAE) AT SITIO SAN ROQUE, BRGY. STO. ROSARIO, CITY OF MALOLOS, BULACAN A Research Presented to The Faculty of College of Science Bulacan State University City of Malolos, Bulacan In Partial Fulfillment to The Requirements for the Course BIO 123 and BIO 123L 2nd Semester, A.Y. 2014-2015 by March 2015
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