Filter the results Item type Select All/None Collection Page Image Stats Folder Quiz Movie File Question New items since Yesterday Last week Last month Ever Search results Subscribe to an always-updated RSS feed. 2203 items matching your search terms. Sort by relevance date (newest first) alphabetically An organism that cannot make its own food and must consume other organisms to obtain its energy Located in Biology / Basics / Introductory concepts in Biology - 2 An organism with cells that have nuclei and membrane-bound organelles Located in Biology / Basics / Introductory concepts in Biology - 2 The ability of an organism to maintain constant internal conditions Located in Biology / Basics / Introductory concepts in Biology - 2 The highest level of the taxonomic hierarchy; includes the Eukarya, Archaea, and Bacteria Located in Biology / Basics / Introductory concepts in Biology - 2 ِِِِِAn individual living entity Located in Biology / Basics / Introductory concepts in Biology - 3 A chemical structure consisting of at least two atoms held together by a chemical bond Located in Biology / Basics / Introductory concepts in Biology - 3 A diagram showing the evolutionary relationships among biological species based on similarities and differences in genetic or physical traits or both Located in Biology / Basics / Introductory concepts in Biology - 3 A group of similar cells carrying out the same function Located in Biology / Basics / Introductory concepts in Biology - 3 A large molecule typically formed by the joining of smaller molecules Located in Biology / Basics / Introductory concepts in Biology - 3 A membrane-bound compartment or sac within a cell Located in Biology / Basics / Introductory concepts in Biology - 3 Previous 10 items 1 ... 3 4 5 6 7 8 9 ... 221 Next 10 items