Add Yahoo as a preferred source to see more of our stories on Google. Specialized compartments within cells carry out specific functions. Christoph Burgstedt/Science Photo Library via Getty Images ...

Every multicellular organism, from tiny worms to humans, elephants, and whales, needs a way for their cells to connect with each other to form tissues, organs, and organize their overall body plan.

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

While our cells are performing some important, basic functions, they can generate compounds known as reactive oxygen species (ROS). These include stuff like superoxide and hydrogen peroxide (H 2 O 2).

Students can find quick revision materials for the ICSE Class 10 Biology (Science Paper 3) exam on Friday, March 13, 2026, ...