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Biology - Science

Biology - Science
Related:  biology

Ask Nature - the Biomimicry Design Portal: biomimetics, architecture, biology, innovation inspired by nature, industrial design - Ask Nature - the Biomimicry Design Portal: biomimetics, architecture, biology, innovation inspired by nature, industrial desi Biology 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

Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. Smaller cells are easily visible under a light microscope. To see anything smaller than 500 nm, you will need an electron microscope. Adenine The label on the nucleotide is not quite accurate. How can an X chromosome be nearly as big as the head of the sperm cell? No, this isn't a mistake. The X chromosome is shown here in a condensed state, as it would appear in a cell that's going through mitosis. A chromosome is made up of genetic material (one long piece of DNA) wrapped around structural support proteins (histones). Carbon The size of the carbon atom is based on its van der Waals radius. Learn Biology Online For Free with our Huge Collection of Open Courses If you’ve always been interested to learn more about nature and the diversity of life, you can now Learn Biology Online for Free! Free Biology courses are easy to find yet some of the ones you find may not be worth your time. We’ve put together a list of Biology courses from well-respected institutions such as John Hopkins, Yale, MIT, Stanford, and UCLA. Hopefully, this free resources will help you advance your knowledge of Biology towards a career in education, medicine, research, and agriculture. MOOCs are Massive Open Online Courses. They are university courses that have been put online, often with enhanced functionality such as Lecture Notes, mini-quizzes and other special features. These are University-level courses that have been put online. Many textbooks to help you learn biology online are now made available for free, in either PDF or Digital Format. We have listed here some of the more popular K-12 Resources available for learning Biology Online.

Diversity In Nature :: :: Best Quality! Diversity "Diversity is not about how we differ. Diversity is about embracing one another's uniqueness." - Ola Joseph "United we stand, divided we fall." - Aesop (620 -560 B.C.) "Diversity: the art of thinking independently together." - Malcom Forbes "Love the one you're with." - Stephen Stills "Diversity is the magic. The greater the diversity, the greater the perfection." - Thomas Berry "We are eternally linked not just to each other but our environment." - Herbie Hancock "We cannot afford to be separate. . . . "I know there is strength in the differences between us. "Uniformity is not nature's way; diversity is nature's way." - Vandana Shiva "Share our similarities, celebrate our differences." - M. "Diversity is the one true thing we all have in common. Zap this page to your friends with One-Click-Forwarding!

It's Plantin' Time! One of the most anticipated science units in my classroom is our study of life cycles. We spend most of our fourth quarter studying the life cycles of plants, butterflies, frogs, and mealworms. It's one of my most favorite times of the year and one that my kiddos really look forward to! However, we had few glitches! We started out with a parts of a seed lab, observing, writing and comparing predictions about what we would find inside of our seeds. After a couple of days we got this and had to start over! I love how this student included the mold in her diagram! We labeled diagrams of plants and wrote about the job of each plant part. You can grab a copy of these charts in my TPT shop {HERE} Throughout the unit we read several nonfiction books about plants, used thinking maps to label the parts of the whole, categorize the parts we eat, and illustrate the stages of the life cycle. We also incorporated some comprehension strategies with this little cause and effect activity.

Norfolk Botanical Garden - Celebrating 75 years and still growing Eukaryote Eukaryotes can reproduce both asexually through mitosis and sexually through meiosis and gamete fusion. In mitosis, one cell divides to produce two genetically identical cells. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells each with half the number of chromosomes as the original parent cell (haploid cells). These act as sex cells (gametes – each gamete has just one complement of chromosomes, each a unique mix of the corresponding pair of parental chromosomes) resulting from genetic recombination during meiosis. Cell features[edit] Eukaryotic cells are typically much larger than those of prokaryotes. Internal membrane[edit] Detail of the endomembrane system and its components A 3D rendering of an animal cell cut in half. The nucleus is surrounded by a double membrane (commonly referred to as a nuclear membrane or nuclear envelope), with pores that allow material to move in and out. Vesicles may be specialized for various purposes.