The cell is the basic unit of all life. All living things-- tigers‚ trees‚ elephants‚ and men-- are made up of cells. A cell is alive-- as alive as you are. It breathes‚ takes in food‚ and gets rid of waste. It grows and reproduces‚ or creates one of its own kind. (Garrod 36) Most cells reproduce by dividing‚ so that there are two cells where there once was one. (Akkas 78) Every living thing is made up of one or more cells‚ and each of these cells was produced by an already existing cell. New cells
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Relationship between organisms and environment Mai Po Nature Reserve is an internationally significant wetland which is actually a flat shallow estuary‚ at the mouth of Sham Chun River‚Shan Pui River and Tin Shui Wai Nullah. Its 380 hectare area with diverse habitats provides a conservation area for mammals‚ insects‚ amphibians‚ reptiles and over 380 species of birds‚ some of which are highly endangered. During the field trip‚ we visited five different habitats‚ including fishponds‚ mangroves
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Monsanto Seed Corp. To understand the problems with the Genetically Modified Organisms (GMO) Foods one must first know of a company by the name of Monsanto. Monsanto was founded in 1901 in St. Louis‚ Missouri. The company’s first product was the artificial sweetener saccharine‚ which it sold to Coca-Cola. At the start of World War I‚ company leaders realized the growth opportunities in the industrial chemical industry and renamed the company
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ANATOMY AND PHYSIOLOGY The vagina is a thin-walled tube 8 to 10 cm long. It lies between the bladder and rectumand extends from the cervix to the body exterior. Often called the birth canal‚ the vagina providesa passageway for the delivery of an infant and for the menstrual flow to leave the body.The cervix (from Latin "neck") is the lower‚ narrow portion of the uterus where it joinswith the top end of the vagina. Where they join together forms an almost 90 degree curve. It iscylindrical or
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Human Physiology Exam 2 Spring 2014 1. Neuroglial cells that regulate neurotransmitter metabolism and capillary permeability are: a. neurolemmacytes b. astrocytes c. oligodendrocytes d. neurons 2. The portion of the nervous system concerned with afferent input from skeletal muscle is: a. visceral sensory b. somatic motor c. somatosensory d. propriosensory 3 Light adaptation of the eye occurs due to: a .a decrease in the active photo pigment b. an increase in active photopigment c. a
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GMOs are genetically modified organisms that are usually put in crops to make them bigger‚ tastier‚ or healthier. Though this sounds like a great idea there are extreme drawbacks. For instance GMOs are already increasing herbicide use in the U.S. by 26 percent since 1998 when the leaders of GMOs said that they would decrease herbicide use. This also means that more weeds are becoming resistant to herbicides and so GMOs are creating superweeds that are even harder to kill. With the constant spraying
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ANATOMY AND PHYSIOLOGY Chronic Kidney Disease Cardiovascular System The cardiovascular system is sometimes called the circulatory system. It consists of the heart‚ which is a muscular pumping device‚ and a closed system of vessels called arteries‚ veins‚ and capillaries. As the name implies‚ blood contained in the circulatory system is pumped by the heart around a closed circuit of vessels as it passes again and again through the various "circulations" of the body. The Heart * The heart
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Negative feedback in living organisms Negative feedback is a principle which is used by the body in order to return systems to its normal level; it does this by turning the corrective measures off. Homeostasis uses the principle of negative feedback in order to maintain a constant internal environment. There are a number of different examples of negative feedback such as thermoregulation‚ regulation of blood glucose and the regulation of water potential. The control of the heartbeat can also use
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Lab Report 6: Respiratory Physiology Purpose: To describe the effects of carbon dioxide concentration on blood pH. Hypothesis: If the blood CO2 levels increase‚ the pH will decrease. Materials and Procedures: Materials: Willing subject (someone complete the activities of the experiment) Timer (with a second hand) Glass Urinary and Salivary pH (litmus) paper Drinking straw Procedures: 1. Measure 2 ounces of water in a glass. Obtain the pH of the
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WEEK 1: AN INTRODUCTION TO HUMAN ANATOMY & PHYSIOLOGY 1. Anatomy is the study of the structure and shape of body and parts‚ while physiology is the study of how the body work and function‚ their relationship is seen for example in the heart‚ there are two valves (anatomy) and these two valves help the heart pump blood. 2. The atom is the smallest particle of an element. An example is carbon ( C ) which is the building block of life. A group of atoms could form for example‚ a water molecule
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