characteristics of living things - mr. dones'...
TRANSCRIPT
Characteristics
of Living
Things
Made of Cells
• smallest unit of a living thing considered to be alive
• highly organized (structures with specific functions)
• 200 different types in humans
unicellular multicellular
Cells
brain cells onion skin cells red blood cells
Tissues
epithelial tissue connective tissue
muscle tissue nervous tissue
Organs
heart lungs
liver kidneys
Systems
circulatory system muscular system
Reproduction
asexual reproduction
1 parent; offspring identical to
parent
sexual reproduction
1 cell from 2 parents create first
cell of offspring
Same Genetic Code
Hereditary information encoded in sections of DNA called “genes”!
Growth/Development
• growth – getting bigger
• development – changing into an adult
• differentiation – a cell becoming specialized
Must Have Materials/Energy
Metabolism – all chemical reactions occurring in an organism
producers consumers decomposers
Response to Environment
• stimulus – signal causing a response
• response – what the organism does
Maintaining Internal Balance
panting to get rid of body heat
Homeostasis – maintaining a stable
internal environment
Evolution - populations change over time