1. Characteristics of Living Things

2. All Living things: Are made up of cells Reproduce Grow and Develop
Obtain and use energy
Respond to the environment

3. 1. All Living things are made up of cells
Cell is a collection of living matter that contains the genetic info of the organism
Organisms can be either:
Unicellular – single celled eg. bacteria
Multicellular – many celled eg. human

4. 2. Reproduction Essential for species to survive 2 methods:
Sexual reproduction = 2 cells of different individuals unite to reproduce a new and genetically different offspring
Asexual reproduction = only 1 parent is required and the offspring is genetically identical to parent

5. 3) Grow and Development
Growth involves a cycle of change called development, and as the process occurs, aging occurs

6. 4) Organisms obtain and use energy to grow, develop, and reproduce
Heterotrophic: Animals take food from their surroundings
Autotrophic: Plants use sunlight to make their own food

7. Metabolism = Anabolism + Catabolism
Metabolism = total sum of the chemical rxn in body
Anabolism = process of synthesizing complex substances from simpler substances
Catabolism = breakdown of complex substances into simpler substances

8. 5) All Living things respond to changes in their environment
Stimulus = what an organism reacts to in its environment (eg. light, temp., odour, sounds, gravity, heat)
Homeostasis = ability to maintain constant or stable conditions