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Chapter 1
Characteristics of Life
| Question | Answer |
|---|---|
| Spontaneous Generation | Living Comes from non living |
| Bio-genesis | Bio-genesisLiving comes from living |
| Cells | CellsMembrane covered structure that contains all the material needed for life |
| Unicellular | Organisms are made up of more than one cell |
| mutlicelluar | organisms are made up of more than one cell |
| Responds to stimulus | a stimulus is a change in an organism's environment that affects its activity |
| Responds to stimulus | a stimulus is a change in an organism's environment that affects its activity |
| examples of stimuli | food, touch, darkness, light, temperature, noise, smell taste |
| Homeostasis | maintaining a stable internal environment |
| Characteristics of life are? | Made of cells, responds to stimuli, maintains homeostasis, uses energy, grows and develops, reproduces |
| What two things happen when an organism grows and develops? | The cells increase in number and change |
| Define sexual reproduction | -involves 2 parents -Offspring has DNA from both parents and is different from both of them |
| Define asexual reproduction | -involves one parent -Offspring is identical to parent |
| What are the necessities of life? | -food, water, oxygen, space to live |
| Producer | Uses sun's energy to make own food |
| Consumer | eat producers or other consumers for energy |
| Decomposers | Get energy from breaking down nutrients in dead organisms or animal waste |
| Water is necessary for | Reactions in cells |
| Oxygen is needed for | Reaction in cells |
| Linnaeus developed what? | A classification system which grouped organisms based on similar structures |
| Modern classification groups organisms are based on? | Similar internal and external features |
| Order of Linnaeus' classification system is? | Kingdom, Phylum, Class, Order, Family, Genus, Species |
| Kingdom | -Largest group in system -Least specific and organisms have the least in common; cannot reproduce together |
| Species | -smallest group -Most specific, have most in common and can reproduce together |
| Binomial nomenclature | -2 word naming system -Using scientific names: Genus and Species |
| A genus is a group of similar species | True |
| Dichotomous Key | -detailed list of identifying characteristics that include the scientific names -arranged in steps with two descriptive choices at each step |
| Advantages of using scientific names is: | Specific, avoids confusion when communicating with other scientists and provides a universal language |
Created by:
resource51
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