Term
| list three goals of science |
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Definition
-Investigate and understand the natural world-use these explanations to make useful predictions
-explain events in the natural world |
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Term
| Describe the steps scientists take to generate and test a hypothesis |
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Definition
observation: gathering information about events
Gather Data: the information gathered from observation
Inference: a logical interpretation based on knowledge or experience |
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Term
| list the components of a scientific hypothesis |
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Definition
| prior knowledge-logical inference- informed creative imagination |
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Term
| define controlled expirement |
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Definition
| an experiment in which only one variable can be changed at a time |
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Term
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Definition
| a well tested explanation that unifies a brood range of observants |
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Term
| what is biology the study of? |
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Definition
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Term
| What are the characteristics of all life? |
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Definition
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Term
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Definition
| the process by which most organisms keep internal conditions |
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Term
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Definition
| the total number of living things |
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Term
| identify and define the disciples of biology listed in chapter 1 of your text |
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Definition
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Term
| describe the uses of a compound light microscope |
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Definition
| you can study dead organisms |
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Term
| describe the uses of a centrifuge |
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Definition
| Spins a tube of cells up to 20,000 times per minute |
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Term
| describe the uses of scanning an electronic microscope |
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Definition
| sem's produce realistic and often dramatic 3d images |
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Term
| list 4 common safety procedures in the laboratory |
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Definition
follow direction
wash hands before and after
Wear safety goggles
wear a lab apron |
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Term
| what are the three particles that make up an atom? Describe them |
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Definition
Electron- Negatively charged particle
neutron- Particle with no charge
proton- Positively charged |
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Term
| if an atom contains 11 protons and 12 neutrons, it's atomic number is....... |
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Definition
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Term
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Definition
| a substance formed by the chemical combination of two or more elements in definite proportions |
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Term
| how is a covalent bond formed? |
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Definition
| when electrons are shared between atoms |
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Term
| what is the most abundant compound in most living things? |
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Definition
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Term
| which is more acidic a pH of 3.5 or a ph of 3.7 |
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Definition
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Term
| what are building blocks of protien |
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Definition
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Term
| which organic compound is the main source of energy for a living thing |
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Definition
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Term
| what are the building blocks for simple sugars |
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Definition
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Term
| what are the building blocks for DNA and RNA (nucliec Acids) |
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Definition
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Term
| describe the composition of fatty acids |
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Definition
| each carbon atom in a fatty acid chain is joined to another carbon atom by a single bond |
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Term
| list 3 functions of protien |
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Definition
control of rate
formloone and muscle
help fight disease |
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Term
| what happens to an atom in a chemical reaction |
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Definition
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Term
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Definition
| the process that changes one chemical |
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Term
| describe a catalyst's role in a chemical reaction |
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Definition
| it speeds up the rate of a chemical reaction |
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Term
| how do enzymes affect the reactions in living cells |
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Definition
| enzymes speed up chemical reactions in cells |
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Term
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Definition
| the scientific study of interaction |
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Term
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Definition
| part of earth where life exists like land and water |
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Term
| what is the original source of energy |
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Definition
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Term
| organisms at the beggining of the food chain is called |
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Definition
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Term
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Definition
| organisms that can capture energy from sunlight |
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Term
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Definition
| network of complex interactions formed by feeding relationships |
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Term
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Definition
| each step in a food chain |
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Term
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Definition
| heterotrophs that eats animals |
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Term
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Definition
| organisms that rely on other organisms for there energy and food supply |
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Term
| give an example of a third level consumer |
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Definition
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Term
| describe 3 types of ecological pyramids |
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Definition
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Term
| only 10% of the energy stored in an organism can be passed on the next trophic level |
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Definition
| organisms use it for life |
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Term
| matter cycle through an ecosystem and energy |
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Definition
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Term
| describe the different processes that cycle and store carbon in the enviroment |
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Definition
| photosynthesis, decomposition, volcanic activity, cutting burning forest |
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Term
| list three organisms that play a direct role in the nitrogen cycle |
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Definition
| bacteria, decomposers, consumers |
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Term
| why are biogeochemical cycles so important to life on earth |
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Definition
| every living organism needs nutrients |
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Term
| how does algae bloom occur |
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Definition
| an aquatic ecosystem receives a large input |
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Term
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Definition
| single nutrient that either is scarce or cycles |
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