1. CHARACTERISTICS OF LIVING THINGS
(Organisms)

2. CHARACTERISTICS OF LIVING THINGS
All living things are made up of cells
Unicellular – organisms that are made of only one cell
Multicellular – organisms that are made of more than one cell
Colonial – unicellular organisms that live in a group

4. CHARACTERISTICS OF LIVING THINGS
All living things have the ability to reproduce to produce new organisms
Sexual reproduction – two cells from different individuals combine to form the first cells of a new organism
Asexual reproduction – all or part of the organism is used to make a new organism

6. CHARACTERISTICS OF LIVING THINGS
All living things will grow, develop and age
Growth – some cells get larger and other new cells are added
Development – cells and body parts become
specialized for certain jobs
Aging – cells and body parts become damaged and cannot be repaired

8. CHARACTERISTICS OF LIVING THINGS
All living things Obtain and Use Energy from Environment
Anabolism – process of making complex substances from simpler substances
Catabolism – breaking down complex substances into simpler substances
Metabolism – sum of all of the anabolism and catabolism of an organism

10. CHARACTERISTICS OF LIVING THINGS
All living things Obtain and Use Energy from Environment
Autotroph – organism that can make its own food from it’s environment
Heterotroph – organism that has to obtain its energy from another organism

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12. CHARACTERISTICS OF LIVING THINGS
All living things Respond to the Environment
Stimulus – anything in the environment that causes a reaction from an organism
Reflex – automatic response to a stimulus
Behavior – learned or inherited response to a stimulus

14. CHARACTERISTICS OF LIVING THINGS
All living things Respond to the Environment (continued)
Homeostasis – an organism’s response to the environment that keep conditions suitable for life

15. When your
body gets too
warm due to
activity or stress,
you will sweat
to cool it down.

16. CHARACTERISTICS OF LIVING THINGS
Are all based on the same chemical code
DNA (deoxyribonucleic acid) stores information on how to make a living thing and how it is supposed to work

17. CHARACTERISTICS OF LIVING THINGS
All groups of organisms evolve over time
Evolution is the change in the characteristics of a group of organisms over time
Individual organisms do NOT evolve

18. Review Questions: Please answer on separate paper.
Describe unicellular, multicellular and colonial organisms in terms of number of cells present.
How is asexual reproduction different from sexual reproduction?
How is anabolism different from catabolism?
What are the three stages of the life cycle?
How are heterotrophs different from autotrophs?

19. Review Questions: Please answer on separate paper.
How is a behavior different from a reflex?
What is homeostasis?
What chemical is the basis of all life on earth?