The Internet

• What is the Internet?
  The Internet is a worldwide system of computer networks, a network of big and small, in which users at any one computer can, if they have permission, get information from or communicate directly with any other computer. In fact, the term ‘Internet’ is derived from the idea of interconnected networks.
  Using the Internet, students and teachers worldwide can source and exchange information speedily and economically, as well as communicate directly with each other. The Internet facilitates collaboration on projects between individuals and schools across the globe. The skills acquired by students during such projects prepare them for a future in which ICT is an integral component of their lives.


• What are the different purposes you may use the Internet for?
  There are three strands of Internet usage relevant to schools — it can be used to communicate with others, it can be used to source information, and it can be used to publish or share information. Some of the activities include:

Communication
• Electronic mail (e-mail)
• Discussion groups
• Internet 'chat' sessions
• Voice and video links
• Social networking sites
• Voice Over Internet Protocol calls (VoIP)
Information Retrieval
• World Wide Web (WWW)
• File Transfer Protocol (FTP)
• Social Bookmarks
• Really Simple Syndication (RSS)
Publishing of Information
• Web site development
• WebLogs (Blogs)
• Wikis
• Podcasts
Educational Uses
One of the most compelling aspects of the Internet is the fact that it facilitates two-way information flow. This has opened up exciting new learning opportunities for schools by providing access to a seemingly limitless library of information and providing opportunities to work with others around the world. You can:

Use e-mail to communicate with other teachers and students
• Research and gather information using the World Wide Web
• Participate in collaborative school projects, both nationally and internationally
• Publish curriculum resources and school information online
• Join groups with shared goals, expectations and needs
• Work with mentors and subject matter experts
• Access professional development information and peer support for teachers
• Promote links between students with special needs with similar disabilities/difficulties

Cytoplasm

Cytoplasm

All of the substance of a cell outside of the nucleus of a membrane bound cell. The cytoplasm contains a number of different types organelles such as the mitochondria and it also includes fluid (the cytosol). The cytoplasm is clear in color and has a gel-like appearance. It is composed mainly of water and also contains enzymes, salts, organelles, and various organic molecules. The cytoplasm helps to move materials around the cell and also dissolves cellular waste. ( biology.about.com) Most, but not all, cells have cytoplasm. Mature sperm are essentially devoid of cytoplasm. The word "cytoplasm" was compounded from two Greek roots -- "kytos," a hollow vessel + "plasma," plasm. From "kytos" came the prefix "cyto-," cell. Cytoplasm is literally cell plasm. (medterms.com).

Mitochondria

Mitochondria

Second largest organelle with unique genetic structure.- Double-layered outer membrane with inner folds called cristae.- Energy-producing chemical reactions take place on cristae- Controls level of water and other materials in cell.- Recycles and decomposes proteins, fats, and carbohydrates, and forms urea.

Structure:

Composed of modified double unit membrane (protein, lipid)- inner membrane infolded to form cristae Function - site of cellular respiration ie. the release of chemical energy from food Glucose + Oxygen -> Carbon Dioxide + Water + Energy (ATP)