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. Find out the role seeds play in a plant life cycle and where they come from.
Curiosity Cabinet Over the past 25 years I have accumulated a collection of various gizmos, devices, toys etc. which to me are excellent examples of scientific principles or things that you look at and you say "That's impossible!" except it's staring you in the face. In the hope that others may also find them interesting and with the help of two undergraduates, Jacy Lundberg and Omar Khan, we have created videos of many of the items in the collection. In many cases we have tried to include explanations of how they work or references to where one can find this information. Jacy and Omar are currently seniors in the Boston College pre-medical program.
Mission adaptation Or why some of them are really good at hiding or running fast? It didn't happen by accident, it is all to do with adapting or changing to fit into your environment better. If an animal is born with something useful to fit their environment, for example they can run really fast, they will probably stay alive for a lot longer. If they stay alive longer there is more chance they will reproduce (have babies). Their babies will then also be able to run faster so they will live longer. 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. For example, many students understand a simple food link between two animals, but many still assume that animals are still independent of each other and depend on humans to provide food and shelter.
Magnifying the Universe Embed this infographic on your site! <iframe width="500" height="323" scrolling="no" src=" frameborder="0" allowfullscreen></iframe><br />Copyright 2012. <a href=" the Universe</a> by <a href=" Sleuth</a>. The above is an interactive infographic. 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. ToL pages are linked one to another hierarchically, in the form of the evolutionary tree of life.
Deep Time : A History of the Earth - Interactive Infographic Life on the planet started astonishingly early. The first living organisms, in the current model of evolution, are thought to be Prokaryotes1. The oldest known fossilised prokaryotes have been dated to approximately 3.5 billion years ago, only 1 billion years after the formation of the Earth's crust. Eukaryotes2 are more advanced organisms with complex cell structures, each of which contains a nucleus. Although incredibly hard to determine their origin, they are thought to have developed 1.6–2.1 billion years ago, although some research2 suggests eukaryotes being present even earlier than this. Around 1.1 billion years ago multicellular3 organisms are thought to have started to develop, most likely similar in form to plants such as green algae. 200 million years later true multicellularity had also evolved in animals similar in nature to today's sponges, which are organisms which can reassemble themselves.
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 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
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. Tension from spindle fibers aligns the tetrads at the cell equator. 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.