Animal cell and molecular biology encompasses the study of eukaryotic cells as the fundamental units of life, focusing on their structure, function, development, and the intricate regulatory ...
Animal, any of a group of multicellular eukaryotic organisms thought to have evolved independently from the unicellular eukaryotes. Animals differ from other multicellular eukaryotes, the plants and the fungi, in morphology and physiology in that animals evolved muscles, which allow them to be mobile.
Cells consist of a variety of internal and external structures that perform specialized functions necessary for survival and reproduction. These components vary depending on whether the cell is prokaryotic or eukaryotic, and whether it belongs to a plant, animal, fungus, or protist.
All cells can be sorted into one of two groups: eukaryotes and prokaryotes. A eukaryote has a nucleus and membrane-bound organelles, while a prokaryote does not. Plants and animals are made of numerous eukaryotic cells, while many microbes, such as bacteria, consist of single cells.
Sketchpad: Free online drawing application for all ages. Create digital artwork to share online and export to popular image formats JPEG, PNG, SVG, and PDF.
Sketch Mobile is a drawing tool that takes advantage of the new capabilities presented in modern mobile browsers; including multi-touch, the accelerometer, and the gyroscope; providing a fun & novel environment to express yourself in colorful ways! Sketch Mobile was commissioned by Google as part of the Mobile Chrome Experiments released at Google I/O 2012. Sketch Mobile utilizes multi-touch ...
Stem cells function as a source of new cells to grow or replace specialised tissues. To perform this function, these cells must divide to renew themselves, while some of their descendants eventually ...