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 Various ways to rate a college There are a bunch of college ratings out there to help students decide what college to apply to (and give something for alumni to gloat about). The tough part is that there doesn't seem to be any agreement on what makes a good college. Alex Richards and Ron Coddington describe the discrepancies. Notice how few measures are shared by two or more raters. This, on top of spotty data across universities, makes rankings, especially for schools that are close in ratings to each other, difficult to know which one to follow. But you already knew that, right? One thing is for sure though. [Thanks, Ron]
Four Stages of Cellular Respiration Cellular respiration is the sum of the various biochemical means that eukaryotic organisms employ to extract energy from food, specifically glucose molecules. The cellular respiration process includes four basic stages or steps: Glycolysis, which occurs in all organisms, prokaryotic and eukaryotic; the bridge reaction, which stets the stage for aerobic respiration; and the Krebs cycle and the electron transport chain, oxygen-dependent pathways that occur in sequence in the mitochondria. The steps of cellular respiration do not happen at the same speed, and the same set of reactions may proceed at different rates in the same organism at different times. Cellular Respiration Equation The complete cellular respiration formula looks slightly different from source to source, depending on what the authors choose to include as meaningful reactants and products. Glycolysis Glycolysis takes place in the cytoplasm. The Bridge Reaction The Krebs Cycle The Electron Transport Chain
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.
FlowingData | Data Visualization, Infographics, and Statistics Plant and Animal Cell Worksheets This collection of animal and plant cell worksheets strikes a balance between cognitive and psychomotor domains of learning and offers a conceptual grounding in cell biology. The worksheets recommended for students of grade 4 through grade 8 feature labeled animal and plant cell structure charts and cross-section charts, cell vocabulary with descriptions and functions and exercises like identify and label the parts of the animal and plant cells, color the cell organelles, match the part to its description, fill in the blanks, crosswords and more. Diffuse into a cell with our free worksheets! Plant Cell Diagram | Animal Cell Diagram Featured in this printable worksheet are the diagrams of the plant and animal cells with parts labeled vividly. Cell Vocabulary How does a minute cell accomplish complex tasks? Plant cell vs Animal cell What is the difference between a plant cell and an animal cell? Cross-Section of a Plant Cell Label the Parts of a Plant Cell Name the Parts of a Plant Cell
top20biology.com Protein Data Bank A Structural View of Biology This resource is powered by the Protein Data Bank archive-information about the 3D shapes of proteins, nucleic acids, and complex assemblies that helps students and researchers understand all aspects of biomedicine and agriculture, from protein synthesis to health and disease. As a member of the wwPDB, the RCSB PDB curates and annotates PDB data. The RCSB PDB builds upon the data by creating tools and resources for research and education in molecular biology, structural biology, computational biology, and beyond. Use this website to access curated and integrated biological macromolecular information in the context of function, biological processes, evolution, pathways, and disease states. A Molecular View of HIV Therapy January Molecule of the Month Nuclear Pore Complex Deposition Preparation Tools Data Extraction Small Molecules Ligand Expo: Search the Chemical Component Dictionary for the IDs of released ligands Data Format Conversion 3D Structure Viewers
10 Tips for Teaching Cells - Getting Nerdy Science Graphic Organizers and Analogies: As students learn the names of all the crazy organelles found inside of bacteria, plant, and animal cells, the key to helping them remember the parts and functions is to use a cell organelle graphic organizer. We like to give student a template for detailing what kind of cell has these organelles, their locations, brief description of their appearance, and their function. In order to further help students retain the information we create a picture or drawing that incorporates all of the info they wrote about that organelle. For example, based on the description of the cell membrane and its ability to determine what goes into and out of the cell, we draw a body guard or a doorman. This visual analogy makes it easy to remember all the details about the cell’s membrane. We also like to get the students thinking more critically, so we add on to this activity by asking them to think about what would happen to the cell if a specific organelle went missing!