Living Things

Mr. SkirbstLife Science

Topic 03

Living Things

* All living things (on Earth) share similar characteristics

6 Characteristics of Living Things1. Made of cells

6 Characteristics of Living Things1. Made of cells2. Ability to move

6 Characteristics of Living Things1. Made of cells2. Ability to move3. Perform complex chemical

activities (ingestion, digestion, respiration, excretion)

6 Characteristics of Living Things1. Made of cells2. Ability to move3. Complex chemical activities4. Grow and develop

6 Characteristics of Living Things1. Made of cells2. Ability to move3. Complex chemical activities4. Grow and develop5. Respond to stimulus

6 Characteristics of Living Things1. Made of cells2. Ability to move3. Complex chemical activities4. Grow and develop5. Respond to stimulus6. Reproduce

Origins of Life

Spontaneous Generation Theory - stated that living things came

from non-living matter, all by itself

Origins of LifeFrancesco Redi (Italy, 1668)

Origins of LifeFrancesco Redi (Italy, 1668) - disproved theory with his

famous experiment (meat & flies)

Origins of LifeFrancesco Redi- He showed that “living

things do NOT come from non-living matter.”

Origins of LifeFrancesco Redi- He showed that “living

things do NOT come from non-living matter.”

- “Living things come from living things.”

6 Basic Needs of Living Things1. Energy

primary source is the sun

6 Basic Needs of Living Things1. Energy2. Food

(provides chemical nutrients)

6 Basic Needs of Living Things1. Energy2. Food3. Water

(allows chemical activities to occur)

6 Basic Needs of Living Things1. Energy2. Food3. Water4. Oxygen

(from air or water)

6 Basic Needs of Living Things1. Energy2. Food3. Water4. Oxygen5. Living Space

(competition for resources)

6 Basic Needs of Living Things1. Energy2. Food3. Water4. Oxygen5. Living Space6. Temperature

Testing for Life

Can soil from another planet be tested for life?