Characteristics of Living Things Living or non living
- Slides: 12
Characteristics of Living Things Living or non living, that is the question. Characteristics of Life Introduction
Living or nonliving?
Living or Non-living? � People once believed that non living things such as meat, mountains, rivers, and forests were living. � This thought was disproved in the 1600’s by the work of a scientist named Francisco Redi. �Raw meat experiment (pg. 36)
Redi Experiment � Redi knew that life could not come from non living things (spontaneous generation). People thought maggots came from meat (non-living) and not flies (living). � Redi put out 2 jars of raw meat, one covered and one not covered. ◦ He found that the jar that was covered did not have maggots. ◦ The jar that was not covered had maggots.
What makes something alive? � It is made of cell(s) � It contains similar chemicals � It obtains(gets) and uses energy � It grows and develops � It reproduces � It responds or reacts to its surroundings
Made of cells � All organisms (living things) are made of cells. A cell is the basic unit of STRUCTURE and FUNCTION in an organism. ◦ Unicellular- having only one cell ◦ Multicellular-having many cells Made of Cells Video
Chemicals of life- Similar chemicals � All ◦ ◦ ◦ organisms are made of similar chemicals. Water (most abundant) Carbohydrates (cell’s energy source) Proteins & Lipids (what cells are made out of) Nucleic acid (DNA made of) Carbon (recycled through all living things)
Uses energy � All living things obtain and use energy. ◦ Energy is needed to do everyday things, such as eat, walk, grow, and develop.
Growth and development � All organisms grow and develop. ◦ Development is the process of change that occurs during the organism’s life. ◦ You are developing. Many of you are in a growth spurt.
Reproduce � All organisms reproduce. ◦ Trees drop seeds. ◦ Dogs have puppies. Organisms have to reproduce in order to keep on living. If organisms did not reproduce, their species would die off.
Respond to surroundings � All living things respond to their surroundings. ◦ Stimuli- (could include) temperature, light, sound �Heat ◦ Response- (action) organisms react to the stimuli. �Sweat, dehydration, thirst ◦ Example- The temperature outside is 107⁰F. What happens when you are outside in the heat for several hours?
Homeostasis � The balance of the internal systems of living things. � Examples: ◦ ◦ Heart Rate (resting vs. exercising) Breathing Rate (resting vs. exercising) Temperature (sweating, shivering) Fluid Level (thirst and urination amount/color) � Can you think of any others? Homeostasis
- Venn diagram of living and nonliving things
- Life processes in living things
- What is the smallest living unit in the body
- Non living things in temperate forest
- Biotic and abiotic
- Non living things outside
- Whats non living things
- 7 characteristics of living things
- 6 characteristics of living things
- Movement characteristics of living things
- Six characteristics of living things
- The six characteristics of life
- Two characteristics of living things