Characteristics of Living Things                                 Characteristics of Living Things

Biology is the study of living things. What Is Biology? Biology is the study of living things. Bio: life -logy: the study of

What does it mean to be living? Define living vs. nonliving by 7 characteristics All living things are complex, organized and made of cells

2. All living things get nutrients and energy from their environment

All living things regulate their internal environment so as to maintain a stable, constant condition-homeostasis Examples: body temperature, pH in blood or stomach, glucose in bloodstream

4. All living things grow and develop -increase in cell size or cell number

All living things respond to stimuli from their environment. (stimuli: things that provoke a response or activity)

6. All living things reproduce more of their own kind asexual reproduction- …..one parent produces …..copies of itself sexual reproduction- ………………………...two parents, each ………………………...contributes to …………………………production of …………………………offspring based on universal code-DNA

All living things can adapt to their environment and evolve- change over time Adaptations are characteristics that allow organisms to survive and reproduce

Redi’s Experiment Where does life come from? Disproved the widely accepted idea of Spontaneous Generation – living things come from nonliving things. Video: Spontaneous Generation

Redi’s Experiment Redi animation One jar was left uncovered. The second jar was covered Maggots appeared only on the meat in the open jar. Redi concluded that meat did not produce maggots-flies did.

Louie Pasteur Nutrient rich broth in flask Boiled broth killing ALL microorganisms Broth exposed to air but not anything in air because of bend in neck of flask Never grew Broke neck, life exploded in broth