BIOLOGY (ZOOLOGY) Standard XI Untouchability is a sin Untouchability is a crime Untouchability is inhuman TAMIL NADU TEXTBOOK CORPORATION College Road‚ Chennai - 600 006. © Government of Tamilnadu First Edition - 2005 Chairperson Prof. T. SARGUNAM STEPHEN Dept. of Zoology Govt Arts College Nandanam‚ Chennai - 600 035. Reviewers Dr. D. Mony Reader in Zoology R. M. Vivekananda College Mylapore Chennai - 600 004. Dr. D. Sudarsanam Reader and H O D Dept. of Zoology Loyola College
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AP Biology August 23‚ 2012 Egg Osmosis Lab Definition of osmosis: The diffusion of water across a selectively permeable membrane from high to low concentrations Hypothesis: If I place an egg in vinegar‚ then the outer layer of the egg is going to become slimy and look like rubber. It will also become larger and bubbles will form on and around the egg. Hypothesis: If I place an egg in corn syrup‚ then the egg will become small and the outer layer will not look like rubber any longer. Day one:
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Organelle | Found In | Structure | Function | Cell Membrane (plasma membrane) | Both | A phospholipid bilayer that contains proteins. Lipids face each other while the phosphates face away from each other. Most proteins stay with the outer layer of phospholipids. | Protective barrier. Transports required materials and wastes in and out of the cell. Cell communication. | Nucleus | Both | Dense sphere inside the cell. Surrounded by a nuclear envelope with nuclear pores that allow for material transportation
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provided by ATP or a difference in electrical charges across a cell membrane. Adenosine Triphosphate (ATP) A molecule that provides energy for cellular reactions and processes. ATP releases energy when one of its high‐energy bonds is broken to release a phosphate group. Adhesion The intermolecular attraction between unlike molecules. Capillary action results from the adhesive properties ofwater and the molecules that make up plant cells. Agriculture The artificial cultivation of food‚ fiber‚ and
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Organism is to community as organ is to _______. 17. Which sequence lists organisms in the order of producer‚ consumer and decomposer? 3. A hypothesis must be testable and ________--there must be some observation or experiment that could show that it is not true 18. Which function below is performed by eukaryotic cells‚ but not prokaryotic cells? 4. ________ uses "if ....then" logic to proceed from a general hypothesis to specific predictions of results that can be expected if the
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Biology is a natural science concerned with the function‚ growth‚ structure‚ evolution and distribution of organisms. It is the science of life‚ involving the study of all living things ranging from the atomic to ecosystem level. Far from being a science restricted to universities and laboratories‚ the principles and findings of biological sciences have uses in everyday life. Human Health · When people get sick‚ they visit the doctor‚ who is a practitioner of medicine‚ the branch of biology
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Challenges in the Field of Marine Biology No matter what science oriented profession one chooses to pursue‚ education is the undisputed key to success and the field of marine biology is no exception. While a bachelor’s degree qualifies you for an entry level position‚ it is most likely insufficient if you have your sights set on a career involving independent research or field work. The majority of people working within the field of marine biology with only a bachelor’s degree‚ are for the
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FRQ #3 a) The flow of genetic information from DNA to protein in eukaryotic cells is called the central dogma of biology. The role of RNA in protein synthesis is extremely important as protein synthesis could not occur without RNA. Three forms of RNA exist solely to create proteins. Through a process known as translation‚ RNA constructs the proteins necessary to sustain life. Spliceosomes Process pre-mRNA by splicing out intronic nucleic acids producing mRNA which is then translated to protein
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Edusmart Study Centre Biology Notes Class 10 1. How are our eyes protected? • Eyes are situated in the eye-socket of the skull • Eyelids with eyelash protect from dust and other particles • Tears keep eyes wet ‚ washes away the dust particles and prevent infection • The conjunctiva covers the front portion of the eye except cornea 2. Which are the 3 layers of human eye? • Sclera –The outermost‚ strong layer‚ that gives shape. Its
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Lab 1 Diffusion‚ Osmosis‚ and Water Potential of Glucose Problem: What effects will glucose have on diffusion‚ osmosis‚ and water potential? Background: All living things have certain requirements they must satisfy in order to remain alive. These include exchanging gases (usually CO2 and O2)‚ taking in water‚ minerals‚ and food‚ and eliminating wastes. These tasks ultimately occur at the cellular level‚ and require that molecules move through the membrane that surrounds the cell. There
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