Uploaded by James Martin

Ch. 1.3 Charac of living things

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1. Living things are based on a
universal genetic code.
- Genetic info stored in DNA
molecule
- Every organism contains A,T,C,
and G nucleotides
2. Living things grow and develop.
- Patterns of growth unique to every
organism
- Development starts as single fertilized
egg
3. Living things respond to
their environment.
- Detect a stimulus, a
signal to which gives a
response, and respond
accordingly.
- a stimulus elicits a
response
phototropism
4. Living things are made up of cells.
- Cells are complex and highly organized
- Smallest units of life
- Many specialized for specific purpose
5. Living things reproduce.
- Produce similar
organisms
- Reproduction is asexual
or sexual
6. Living things maintain a stable
environment.
- Energy is used to maintain internal
environment (homeostasis)
- Necessary for survival
stomata
7. Living things obtain and use material
and energy.
- Chemical reactions in organisms break
down or build materials necessary for life
(metabolism)
8. Living things evolve
as a group.
- Change occurs over
long periods of time
through adaptation
(evolution)
- Common ancestry
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