Definition!i give brainliast m 1.cell - 2. organelle - 3. tissue - 4. organ - 5. organ system - 6. organism - 7. homeostasis - 8. regulation - 9. negative feedback loop - 10. positive feedback loop - 11. stimuli - 12. receptor - 13. effector - 14. response - 15. control center -

1.cell the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic.

2. Organelle any of a number of organized or specialized structures within a living cell.

3. tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.

4.organ a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.

5. An organ system is a group of organs that work together to perform a certain function in an organism's body. Most animals and plants have organs, which are self-contained groups of tissues such as the heart that work together to perform one function. ... The human body has 11 different organ systems.

6.organism an individual animal, plant, or single-celled life form.