2. Living Organisms It’s Alive!!! Created by Ms. Ray It’s Alive!!! Created by Ms. Ray

3. CHARACTERISTICS OF LIVING THINGS The six characteristics of living things are: Living things must have cells Living things must sense and respond to change Living things must be able to reproduce The six characteristics of living things are: Living things must have cells Living things must sense and respond to change Living things must be able to reproduce

4. Living things must have DNA Living things must use energy Living things must grow and develop Living things must have DNA Living things must use energy Living things must grow and develop

5. Living things must have cells Every living organism is composed of cells. A cell is a membrane-covered structure that contains al of the materials necessary for life There are two types of cells: –Unicellular –Multicellular Every living organism is composed of cells. A cell is a membrane-covered structure that contains al of the materials necessary for life There are two types of cells: –Unicellular –Multicellular

6. Characteristics of Unicelluar organisms Unicellular organism are composed of only one cell Examples: Protista Monera Bacteria Unicellular organism are composed of only one cell Examples: Protista Monera Bacteria

7. Characteristics of Multicellular organisms Multicellular organisms are composed of two or more cells and the numbers can be in the trillions. Examples: Plantae animalia Multicellular organisms are composed of two or more cells and the numbers can be in the trillions. Examples: Plantae animalia

8. Multicellular organisms has cells that perform specific functions. Examples: Muscle cells are specialized for movement Nerve cells transport signals Multicellular organisms has cells that perform specific functions. Examples: Muscle cells are specialized for movement Nerve cells transport signals

9. Living things must sense and respond to change All organisms have the ability to sense change in their environment and respond to that change. Stimulus (plural stimuli) is any change in an organism’s environment that affects the activity of the organism All organisms have the ability to sense change in their environment and respond to that change. Stimulus (plural stimuli) is any change in an organism’s environment that affects the activity of the organism

10. Response is the reaction to what happens when you reacted to the stimulus Response is the reaction to what happens when you reacted to the stimulus

11. Homeostasis is the ability to maintain a stable internal environment regardless of the external environment Example: - The body sweats when it is hot outside in the summer - The body shivers with cold chills when the body is cold Homeostasis is the ability to maintain a stable internal environment regardless of the external environment Example: - The body sweats when it is hot outside in the summer - The body shivers with cold chills when the body is cold

12. Living must be able to reproduce There are two types of reproduction: –Asexual –Sexual There are two types of reproduction: –Asexual –Sexual

13. Living things must have DNA DNA is an acronym for deoxyribonucleic acid Deoxyribonucleic acid is heredity material that controls all the activities of a cell, contains the information to make new cells and provides for making proteins DNA is an acronym for deoxyribonucleic acid Deoxyribonucleic acid is heredity material that controls all the activities of a cell, contains the information to make new cells and provides for making proteins

14. DNA provides instructions for making molecules called proteins Proteins are responsible for almost all of the activities of an organism’s characteristics DNA provides instructions for making molecules called proteins Proteins are responsible for almost all of the activities of an organism’s characteristics

15. During reproduction DNA is copied and passed on its offspring DNA carries the characteristics of the organism Heredity is the transmission of characteristics from one generation to the next generation During reproduction DNA is copied and passed on its offspring DNA carries the characteristics of the organism Heredity is the transmission of characteristics from one generation to the next generation

16. Living things must use Energy Organisms use energy to carry out the activities of life

17. Living things must have the ability to Grow and Develop All organisms regardless whether they are unicellular (single-cell) or multicellular (two or more cells) grow and develop during periods of their lives All organisms regardless whether they are unicellular (single-cell) or multicellular (two or more cells) grow and develop during periods of their lives