Which are open because there are wild animals roaming
All eukaryotic cells have within them a variety of different structures called organelles. Organelles are small and function much like organs function in a large organism. Some organelles are responsible for gathering cell energy, others for controlling cell activities. Plant cells have different organelles than animal cells but also share many also. They all have a large variety of sizes and functions and make life as we know if possible. Click the links in the yellow boxes for more detailed information on each of the organelles. Some links may not be active yet - I'm still writing the site and some of the pages may not be up yet
The first living things on Earth, single-celled micro-organisms<span> or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have </span>first<span> appeared on </span>Earth<span> almost four billion years ago, just a few hundred million years after the formation of the </span>Earth<span> itself.</span>
An enormous cloud of gas and dust that contracts due to gravity and forms stars is called a nebula.
