association of 2 or more atoms) Cell - smallest unit of life Tissue - organized array of cells and substances that interact in a collective task Organ - structural unit of interacting tissues Organ System - a set of interacting organs Multicelled Organism - individual that consists of one or more cells Population - group of single celled or multicelled individuals of a species in a given area Community - All populations of all species in a specified area Ecosystem - A community interacting with
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or skin cells. What are these things called cells? Cells are the smallest living things. You’ll be learning a lot about cells in this course. For now‚ however‚ I’ll introduce you to just a few basic things about them. Cells are extremely tiny organisms that carry out all of the functions of life inside a thin layer of “skin” called (unimaginatively) the CELL MEMBRANE. A good analogy is the thin‚ flexible skin of a soap bubble. The cell membrane keep the cell together. Without the membrane‚ all
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Transport Systems Essay In single celled organisms‚ nutrients‚ water and various substances that are need for basic cellular processes can easily be transported in and out through the cell membrane. This is an effective transport system for microscopic organisms‚ but multicellular organisms require a more complex transport system to sustain itself. Take humans for example; unlike a cell‚ only the outer layer of skin is in contact with the body’s outside environment. It’s not possible for substances
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AP Biology Chapter One Objectives 1. Briefly describe the unifying themes that characterize the biological sciences. New properties emerge at each level in the biological Hierarchy Organisms interact with other organisms and the physical environment Life requires energy transfer and transformation Structure‚ and function are correlated at all levels of biological organization Cell is an organism’s basic unit of structure and function The continuity of life is based on heritable information
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Chapter 22: Protists 22-1: Characteristics of Protists Protists Are a Varied and Ancient Group of Organisms Protists are the most diverse of all organisms - most are unicellular - microscopic - few are complex and multicellular Characteristics - eukaryotes - some photosynthesis - some ingest their food - some absorb their food - some have flagella or cilia o used for locomotion or getting food - found
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of the animals. The kingdom monera contains primitive organisms. These organisms are very small‚ single celled and do not have a nucleus. They consist of prokaryotes which include species like the bacteria‚ archae bacteria‚ cyanobacteria and mycoplasma. Also‚ some bacteria are beneficial to us‚ such as the ones found in yogurt. But others can cause us to get sick. The kingdom protista as the kingdom monera contains single celled organisms. But these are different of the previous ones because of
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B1 Revision Classification • Organisms were based into groups based on their characteristics (classification). • Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚ Species Kingdom Main Characteristics Animalia Multicellular; heterotrophic feeders so no chlorophyll‚ no cell walls; complex cell structure with nucleus Plantae Multicellular; autotrophic feeders using chlorophyll; cell walls made of cellulose; complex cell structure with nucleus Fungi Multicellular; cell walls not made of cellulose;
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Section One : In the discipline known as taxonomy‚ scientists classify organisms and assign each organism a universally accepted name. The first part of the scientific name—in this case‚Ursus—is the genus to which the organism belongs. Agenus(JEE-nus; plural: genera‚ JEN-ur-uh) is a group of closely related species. Linnaeus’s hierarchical system of classification includes seven levels. They are—from smallest to largest—species‚ genus‚ family‚ order‚ class‚ phylum‚ and kingdom
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types of multicellular algae? The three types if multicellular algae are chlorophyta which are green algae‚ phaeophyta which are brown algae‚ and rhodophyta which are red algae. 3. Are algae autotrophs or heterotrophs? Algae are autotrophs. 4. What organelle allows plants (and plantlike protists) to photosynthesize? The chloroplasts allow plants and plantlike protists to photosynthesize. Objective: The goal of this lab is to identify and explore common features between organisms of the
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Congratulations AKASH for bagging an “Overall L-SAT Rank” of 1.Your Patiala ZONE Rank is 4. Join Lakshya before 15th December 2013 and get additional 5% Founder’s Week Discount along with Early Bird‚ L-SAT Scholarship and other eligible discounts. Limited Seats !!! Registrations are Open: Thanks to all the parents and students for overwhelming response for L-SAT. Lakshya catered around 35‚000 students in L-SAT. We have Limited Seats. We will try our best to enrol all deserving students but
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