Bozeman Science Biology Videos Biology Unit 1: Introduction BiologyClassification of LifeEssential Characteristics of Life Hierarchy of LifeScientific MethodThree Domains of Life Unit 2: Chemistry of Life Biological MoleculesCarbohydratesLipidsMolecules of LifeNucleic Acids Polymers Positive & Negative Feedback LoopsProteinsWater & LifeWater - A Polar Molecule Unit 3: Cells Anaerobic RespirationATP: Adenosine TriphosphateA Tour of the CellBioenergetics Cancer - What is It? EnzymesEvolution of Cell CommunicationGibbs Free EnergyHomeostatic EvolutionInterstitial FluidLife Requires Free EnergyMeiosis Phases of MeiosisMitosis Phases of Mitosis Osmosis DemoPhotosynthesis & RespirationSignal Transduction PathwaysSodaria CrossThe Cell MembraneThe Importance of OxygenTransport Across the Cell MembranesWater PotentialWhy Are Cells Small Unit 4: Genetics Unit 5: Evolution AbiogenesisCladogramsCoevolutionEvidence for EvolutionEvidence for Evolution IIEvolution ContinuesExamples of Natural SelectionGenetic DriftMicroevolution Animals
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Interactive Animal and Plant Cells Nucleolus: The prominent structure in the nucleus is the nucleolus. The nucleolus produces ribosomes, which move out of the nucleus and take positions on the rough endoplasmic reticulum where they are critical in protein synthesis. Cytosol: The cytosol is the "soup" within which all the other cell organelles reside and where most of the cellular metabolism occurs. Cytoplasm: This is a collective term for the cytosol plus the organelles suspended within the cytosol. Centrosome: The centrosome, or MICROTUBULE ORGANIZING CENTER (MTOC), is an area in the cell where microtubules are produced. During animal cell division, the centrioles replicate (make new copies) and the centrosome divides. Centriole (animal cells only): Each centriole is a ring of nine groups of fused microtubules. Golgi: The Golgi apparatus is a membrane-bound structure with a single membrane. Lysosome: Lysosomes contain hydrolytic enzymes necessary for intracellular digestion.
Bozeman Science AP Biology Videos AP Biology The New AP Biology Exam - A User's GuideThe 2013 AP Biology Exam ReflectionsAP Biology Review Cards (PDF) AP Biology Practices 1 - Models & Representation 2 - Using Mathematics 3 - Scientific Questioning 4 - Data Collection Strategies 5 - Analysis & Evaluation of Evidence6 - Scientific Explanations & Theories7 - Scales, Concepts & Representations Big Idea 1: Evolution 001 - Natural Selection002 - Examples of Natural Selection003 - Genetic Drift004 - Evidence for Evolution005 - Essential Characteristics of Life006 - Phylogenetics 007 - Speciation and Extinction008 - Speciation009 - Evolution Continues010 - Abiogenesis011 - The Origin of Life - Scientific Evidence Big Idea 2: Free Energy 012 - Life Requires Free Energy013 - Photosynthesis & Respiration014 - Environmental Matter Exchange015 - Cell Membranes016 - Transport Across Cell Membranes017 - Compartmentalization018 - Positive & Negative Feedback Loops019 - Response to External Environments Big Idea 3: Information Big Idea 4: System
Biology101.org Best Teacher I Ever Had Best Teacher I Ever Had by David Owen Extracted from Reader's Digest (Asian Edition), April 1991, pp. 47-48. Mr. When he returned my paper, I was shocked. Very simple, Mr. Needless to say, we were outraged. We should have figured it out, Mr. Mr. Every class was an adventure with Mr. We carried our brand-new skepticism into all our classes. If I'm ever asked to propose a solution to the problems in our schools, it will be Mr. Not everyone sees the value in this.
A Science Odyssey: You Try It: DNA Workshop An embryonic cell divides again and again. Where there was one cell there are two, then four, then eight,... Each holds all the genetic information needed to create a human being. Hair grows from your head, nonstop, day in and day out. The answers to these questions are DNA replication and protein synthesis. Knowledge of the structure of DNA began with the discovery of nucleic acids in 1869. The activity in this section places you within the cell, involving you with the processes of DNA replication and protein synthesis. If you're interested in finding out more about DNA and protein synthesis, check out the other sections. Related People and Discoveries entries
Paramecium, an introduction. Biology teaching resources by D G Mackean Paramecium is a ciliate protozoan. Ciliates’ bodies are covered with fine cytoplasmic hair-like structures called cilia. Flickering movements of the cilia propel the organism through the water and also create feeding currents. Paramecium is a ciliate. Unlike amoeba, paramecium has a distinct and permanent shape and certain areas of cytoplasm, (cell organelles), are specialised to carry out specific functions. Locomotion. If paramecium encounters an obstacle, it reverses the ciliary beat and moves back. Feeding. Any undigested matter is expelled through the anal pore. Reproduction. There is also a complex sexual process in which two paramecia join by their oral surfaces. Osmoregulation. In amoeba, the vacuole forms near the posterior end but is not associated with a particular structure. Paramecium has two contractile vacuoles, one at each end, which fill and contract alternately. Other ciliates. For illustrations to accompany this article see Protista See also: Videos of Paramecium
DNA from the Beginning - An animated primer of 75 experiments that made modern genetics. 21 Brilliant Productivity Tools Every College Student Must Use: Get Degrees If you ask a college student about productivity, he won't have much to say. And you really can't blame him. He leads a dynamic life where academics and fun go hand in hand, with the latter becoming a more important activity most of the times. However, with the advent of internet and web 2.0, a college student now has access to so many amazing tools that he could finish up his work as well as enjoy life to the fullest without the guilt. The following list mentions 21 such tools which could skyrocket the productivity of college students when it comes to doing research, communicating with fellow students and dealing with assignments. Research and Taking Notes 1.Questia Questia is an excellent online research tool which features a huge web based library of magazines, books, journals, papers, articles and much more. Although you need to pay about $19.95 per month for its membership, you could save on books and magazines you buy if you subscribe to it. 2.Free Book Notes 3.Wikipedia 4.Notely 7.