7 Characteristics of Living Things- Biology
5) Growth and Development
-all living things grow and increase in size using cell division
Biological molecule
-chemical compounds that provide physical structure and that bring about movement
Cell Division
-formation of two new cells from an existing cell Unicellular- new identical offspring Multicellular- replacing cells/ development
Tissue
-group of cells that have similar abilities and that allow the organ to function
Organ system
-group of organs that carries out a more generalized set of functions
Asexual reproduction
-hereditary info from different organisms is not combined (offspring are genetically identical)
Sexual reproduction
-hereditary info is recombined from two organisms of the same species (offspring is not identical)
Unicellular
-organisms that are made up of one cell (ex: bacteria)
Multicellular
-organisms that are made up of one or more cells (ex: humans)
7) Change Through Time (Evolution)
-populations of living organisms evolve over time
Development
-process by which an organism becomes a mature adult
Genes
-short segment of DNA that contains the instructions for a single trait of an organism
Atom
-simple particle of an element that retains all the properties of a certain element
Cell
-smallest unit that can perform all of life's processes
Organ
-structure that carries out specialized jobs within an organ system
Organelle
-tiny structure that carries out functions necessary for the cell to stay alive
3) Homeostasis
Homeostasis- the maintenance of stable internal conditions even though environmental conditions are constantly changing.
4) Metabolism
Metabolism- sum of all the chemical reactions that take in and transform energy and materials from the environment. ex: Photosynthesis- plants use sun's energy to produce glucose
1) Organization and Cells
Organization- the high degree of order within an organism's internal and external parts and in its interactions with the living world. Cell- the smallest unit that can perform all of life's processes. *atom-biological molecule-organelle-cell-tissue-organ-organ system
6) Reproduction
Reproduction- organisms transmit hereditary info to their offspring 2 types- Asexual and Sexual
2) Response to Stimuli
Stimulus- physical/chemical change in the internal/external environment. ex: When you touch a hot stove, your brain sends a signal to your nerves, causing you to respond.