8 characteristics of life notes
TRANSCRIPT
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NATURE OF LIFE NOTES
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What is Biology?
• the study of living things.– BIO-: life
– -OLOGY: study of
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Characteristics of Life
How do you know something is living?
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Which of the following is Living?
• Spider Web• River• Rock• Rain• Onion• Potatoes• Horse• Grass• Tree & Leaves• Cacti
• Yogurt• Tornado• Fire• Seed• Mushrooms• Frog• Icicles• Eggs• Rocking Horse• Teddy Bear
• Bicycle• Bananas• Baby• Hibernating Bear• Robot• Peas• Corn• Jellyfish• Sun• Cloud
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All living thing…
•Made of cells– Basic unit of life
– Unicellular: made up of one cell
– Multicellular: made up of many cells
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All living thing…
•Reproduce– Asexual reproduction: has only 1 parent– Sexual reproduction: needs 2 parents
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All living thing…
•Grow and Develop– Growth: increase in size or shape
– Development: mature over time
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All living thing…
• Have a genetic code (DNA/RNA)– DNA: deoxyribonucleic acid– RNA: ribonucleic acid
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All living thing…
• Use and Need Energy– Energy comes from “food”
• Producers: get their energy from the sun• Consumers: get their energy by eating other organisms
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All living thing…
•Respond to environment– Reacts to stimuli
• Stimuli: signal to which an organism responds
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All living thing…
• Maintain homeostasis– Homeostasis: a process in which organisms maintain
a stable internal environment– Examples: sweating, shivering, panting
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All living thing…
•Evolve– Changes of a long
period of time involving the entire group