what makes something alive?? do now: write down what characteristics you think something must have...
TRANSCRIPT
What makes something alive??DO NOW:
Write down what characteristics you think something must have to be
considered “living.”Microscopic Organism Tree
Humans
1. Living things are made of cells
• A cell is the smallest unit of life
• All living things are made of 1 or more cells
• Organisms made of just 1 cell are called single-celled organisms
Unit- partOrganism- living thing
2. Living things grow
• All living things start as a single cell
• Every organism grows in it’s own way
Organism- a living thing
3. Living things respond to their environment
• Organisms detect and respond to their environment
• A stimulus is signal which an organism responds to
Detect- notice, become aware
4. Living things reproduce
• All organisms reproduce, or make new similar organisms.–Sexual reproduction- 2 parents, similar
offspring –Asexual reproduction- single organism
makes identical offspring
Offspring- childrenIdentical- exactly the sameSingle- just 1
5. Living things need energy
• All living things must take in energy.
• Living things need energy to grow and reproduce.
• Some organisms can make their own food, some organisms must get food from their environment
Environment- world around you
6. Living things must maintain a stable internal environment
• Living things must maintain a stable internal environment.–Example- Body Temperature
Maintain- keepStable- doesn’t change, stays the sameInternal- inside
7. Living things are based on a universal genetic code
• Living things are based on DNA• DNA provides the code for life• DNA is passed from parent to offspring
in reproduction
• Universal- the same everywhere
8. Living things evolve
• Over many generations, organisms evolve, or change over time.
• Organisms evolve to become better at what they do
Generation- a life timeEvolve- change over many years