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Transcript
CHARACTERISTICS OF LIFE
What it means to be living?
WHAT IS BIOLOGY?
 Biology is the study of all ______________________ things
 Living things are called _____________________
 Organisms include bacteria, protists, fungi, plants, & animals
ALL LIVING THINGS SHARE COMMON CHARACTERISTICS
1.
Basic Unit is the ___________________
2. They ______________________
3. All Based On Universal ___________________________ (DNA)
4. __________________ & _____________________
5. Obtain & Use Materials & ___________________
6. ______________________ To Their Environment
7. _______________________ A Stable Internal Environment
8. AS A GROUP, Living Things _________________________, That Is They Change Over Time
ALL ORGANISMS ARE MADE OF CELLS
 Cells are the smallest ______________ ____________ of an organism
 All cells contain living material called _____________________
 All cells are surrounded by a cell ________________________ that controls what enters & leaves the cell
 Cells are complex & highly organized
 Cells have parts called ___________________ that do different jobs (Chloroplasts in plants make sugars)
 The simplest cells are called ________________________
 These cells _________ have a nucleus or membrane-bound organelles
 Bacteria are examples
 More complex cells are called _____________________
 These cells ________ have a nucleus and membrane-bound organelles
 Plants, animals, protists, & fungi are examples
Organisms are Grouped by their Number of Cells
 _________________________ Organisms
– Living Organism Made Up Of One Cell
 __________________________ Organisms
– Living Organism Made Up Of Many, Specialized Cells
ORGANISMS REPRODUCE TO PASS ON THEIR GENETIC TRAITS
Two types of Reproduction
 ______________________ Reproduction
 Involves 2 parents
 Egg fertilized by sperm to make a ______________________
 Offspring _______________________ from parents
 _______________________ Reproduction
 Involves a single organism or cell
 Cell __________________
 Offspring ________________________ to parent
CELLS HAVE A GENETIC CODE
 ______________ (deoxyribose nucleic acid) carries the genetic code for all organisms
 All organisms contain DNA
 DNA codes for the ___________ that make up cells & do all the work
ORGANISMS GROW & DEVELOP
 Organisms _______________ by producing MORE _____________ & by cell
__________________________
 Organisms ________________ as they mature into an adult organism
CELLS REQUIRE FOOD & ENERGY
 _________________ can make their own food
 _________________ use sunlight to make food (photosynthesis)
 _________________ use chemicals such as iron & sulfur as their energy
 _________________ can NOT make their own food
 They must consume other organisms
 _________________ eat plants
 _________________ eat meat
 _________________ eat plants & animals
METABOLISM
 Sum of _____________ the chemical reactions in an organism
 All require _________________
 _________________ is the ultimate energy for life on Earth
ORGANISMS RESPOND TO STIMULI
 Organisms Respond to stimuli (Temperature, Water, Food Supplies, etc.) In Order To
_________________ & _________________
HOMEOSTASIS
 Keeping The _________________ Environment (Homeostasis) Of The Cell or Organism Within The
Ranges Required For Life
 Stable internal conditions of pH, temperature, water balance, etc.
LIVING THINGS EVOLVE
 Groups Of Organisms (_______________________________) Change Over Time In Order To
Survive Within Changing Environments.
 Fossil records show changes in groups of organisms