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The Biology Project: Cell Biology

The Biology Project: Cell Biology
en español Cell Membranes Learn that membranes are fluid, with components that move, change, and perform vital physiological roles as they allow cells to communicate with each other and their environment. Cell Signaling Learn that living organisms constantly receive and interpret signals from their environment. Cells of multi-cellular organisms also receive signals from other cells, including signals for cell division and differentiation. Studying Cells Introduce yourself to the cell as the fundamental unit of life and the scientific method. The Cell Cycle & Mitosis Understand the events that occur in the cell cycle and the process of mitosis that divides the duplicated genetic material creating two identical daughter cells. Meiosis Understand the events that occur in process of meiosis that takes place to produce our gametes. Prokaryotes, Eukaryotes, & Viruses Learn about the cells that make up all living systems, their organelles, and the differences between living cells and viruses. Related:  Biology

Meiosis: An Interactive Animation Diploid Cell (2N): From a preceding mitotic division, the Oogonium (Spermatogonium) enters meiosis with DIPLOID (2N) chromosomes but TETRAPLOID (4N) DNA. Chromosomes then duplicate to produce SISTER CHROMATIDS (or HOMOLOGOUS DYADS). Prophase I: Dyad pairs align to create "TETRADS", non-sister chromatids connect and trade sections at a "CHIASMA", a process called "CROSSING OVER". Metaphase I: SPINDLE FIBERS attach to each dyad at the KINETOCHORE. Anaphase I: Chiasmata break apart and sister chromatids begin migrating toward opposite poles. Telophase I: CLEAVAGE FURROW forms beginning the process of CYTOKINESIS (cell division). Prophase II: Spindle formation begins and centrosomes begin moving toward poles. Metaphase II: Tension from spindle fibers aligns chromosomes at the metaphase plate. Anaphase II: CHROMATIDS separate and begin moving to the poles. Telophase II: CLEAVAGE FURROW forms beginning CYTOKINESIS. Gamete (1N): NUCLEAR ENVELOPES form and chromosomes disperse as CHROMATIN.

Fighting infection with vaccines - Science (9) - ABC Splash - Overview Explore historical and modern efforts to battle human infectious diseases. Watch re-enactments of the experiments of Edward Jenner, who pioneered vaccination, and of Louis Pasteur's work showing how microbes cause infection. Peer down the microscope to see the microbial world that wreaks havoc on human health. Learn about the work of an Australian team developing a vaccine against the diarrhoea. 13 mins 46 secs Source: Pathways to Australian Science | Learning area: Science | Secondary: Year 9 Transcript 00:00:07:03NARRATOR:Sickness... ...Read more > 00:11:16:20DR RUTH BISHOP:We went looking for the cause of acute gastroenteritis in young children coming into hospital. About this resource Acknowledgements Source: Pathways to Australian Science Date first broadcast: 01 January 1998 Cite this resource You can use this information to reference this item. Bibliographic details for 'Fighting infection with vaccines': Pathways to Australian Science, ' Fighting infection with vaccines', ABC Splash

i-Biology | international, independent, illuminated Plants - Interactive Science Games and Activities plants A plant is a living thing. A plant needs light, warmth, water and nutrients to grow well. Roots take up water and nutrients from the soil. They also keep the plant steady and upright in the soil. The stem carries water and nutrients to different parts of the plant. The leaves make food by using light from the sun, along with carbon dioxide from the air and water. Sats Questions about Plants Self Marking Plants Sats Quiz Sats Questions about Parts of a Plant Mixed Sats Questions

How plants work - Science (4) - ABC Splash - Overview Plants are the only living things that can make their own food. They do this during the day while it's light, using a process called photosynthesis, which uses carbon dioxide and produces oxygen. 5 mins 11 secs Source: Kids in the Garden | Learning area: Science | Primary: Year 4 Transcript 00:00:19:06NICK HARDCASTLE:Mmm! ...Read more > 00:00:36:08VOICE:Yummy! About this resource Acknowledgements Source: Kids in the Garden Date first broadcast: 27 June 2005 Cite this resource You can use this information to reference this item. Bibliographic details for 'How plants work': Kids in the Garden, ' How plants work', ABC Splash 25 April 2014 Copyright information Metadata © Australian Broadcasting Corporation and Education Services Australia Ltd 2012 (except where otherwise indicated).

Anatomy Labs - - Virtual laboratory simulations for science education Below is a list of freely available online anatomy, physiology and virtual dissection lab resources. Get Body Smart – An online examination of human anatomy and physiologyHuman Body & Mind – From the BBCVirtual AutopsyFroguts! – Virtual frog dissection and labsVirtual Frog Dissection Kit – From Berkeley LabVirtual Cat Dissection – From Penn State UniversityVirtual Pig Dissection – From Whitman CollegeVirtual Owl Pellet Dissection – From KidWingsJayDoc HistoWeb – From the University of Kansas Medical Center. The following anatomy and physiology laboratory simulations and educational learning exercises are available for a fee. Commercial products Anatomy & Physiology LabPaqs – Hands-on laboratory experiences Also see the list of other Biology Labs. Return to the List of Subjects.

Zygote | 3D Human Anatomy for Animation, Illustration, CAD and Software Development Human Body Maps | 3D Models of the Human Anatomy Different organs can work together to perform a common function, like how the parts of your digestive system break down food. We refer to an integrated unit as an organ system. Groups of organ systems work together to make complete, functional organisms, like us! There are 11 major organ systems in the human body. The circulatory system is a body-wide network of blood, blood vessels, and lymph. Learn more about these body parts in the circulatory system: Every tissue within the body requires oxygen to function. Learn more about these body parts in the respiratory system: The skeletal system gives the body its basic framework, providing structure, protection, and movement. The muscular system is comprised of the sum total of muscles throughout the body that move the skeleton, maintain posture through steady contraction, and generate heat through cell metabolism. The nervous system allows us to perceive, comprehend, and respond to the world around us.

Teach.Genetics™ Science Education - Research & Training - NIH NIH Home > Research & Training Resources for Students Featured Site: NIAMS Kids Pages Your childhood and teen years are a prime time to learn habits that will help you keep your bones, joints, muscles, and skin healthy for years to come. Resources for Educators Science Education Partnership Award (SEPA) From science museums to K-12 classrooms, NIH’s SEPA Program supports exciting and innovative educational programs that boost understanding of health and science research among students and the general public. From the NIH Director Francis Collins, M.D., Ph.D., offers a message to high school graduates.

Tree of Life Web Project The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world. On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny). Each page contains information about a particular group, e.g., salamanders, segmented worms, phlox flowers, tyrannosaurs, euglenids, Heliconius butterflies, club fungi, or the vampire squid. Remarkable animal and plant life cycles - science(2,3,4) - ABC Splash - Add this to your favourites Remarkable animal and plant life cycles Find out about animals such as mammals that give birth to live young. Find out what's special about marsupials and the strange monotremes. Discover more about animals that lay eggs and animals that undergo metamorphosis. About this digibook Animals grow and change watch Mammals of the sea watch Animals with pouches watch The amazing seahorse watch Odd egg-laying mammals watch Egg-laying animals watch Female turtles return to lay eggs watch How an egg forms inside a bird watch Insects with only three stages of life watch Four stages in a butterfly's life cycle watch Complete change: complete metamorphosis watch Inside the fruit of a plant watch Growing plants from seeds watch The mysterious mushroom watch Who is this for? Primary Science Years: 2,3,4 Copyright information Belongs to the topic: Animals Plants

Animal Adaptations Purpose To expand students’ knowledge of animal features and behaviors that can help or hinder their survival in a particular habitat. Context As students approach this Animal Adaptations lesson, bear in mind that, according to research, most lower elementary school students are still forming a basic understanding of how animals survive in their respective environments. In earlier grades, students observed local plants and animals in their habitats and learned that animals can eat both plants and each other, as well as use each other for shelter and nesting. In this lesson, students will participate in classroom discussions and visit a website to learn more about animals and how well (or poorly) they’ve adapted to satisfying their needs in their natural habitats. The Kratts' Creatures website used in this lesson provides students with a simple, visual means for familiarizing themselves with basic world ecosystems as well as some examples of the animals that occupy them. Planning Ahead

What would disprove evolution? If evolution is a scientific theory worth its salt, then there must be some conceivable observations that could show it to be wrong. I just wanted to put down, for the record, what some of those observations might be. First, let’s reprise what I see as the major components of the theory of evolution. Evolution occurs, that is, there is gene frequency change in populations over generations.Significant evolution takes time—that is, it usually (though not always) requires hundreds to thousands of generations to occur. It is not instantaneous, and it is the population and species rather than the individual that evolves.Lineages of organisms split, or speciate, so that the single lineage that gave rise to life 3.5 billion years ago has undergone numerous splitting events to produce the millions of species alive today (and also the even more millions that went extinct).The converse of #3: any pair of living species has a common ancestral species some time in the past. Like this: