Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Biology one
1st test review
| Question | Answer |
|---|---|
| spontaneous generation | Hypothesis (disproven) stating that life could arise from nonliving matter |
| controlled experiment | a test of the effect of a single variable by changing it while keeping all the other variables the same |
| manipulated variable | factor in an experiment that a scientist purposely changes - also known as an independant variable |
| responding variable | factor in an experiment that scientist wants to observe that may change in response to the manipulated variable |
| theory | well tested explanation that unites a broad range of observations |
| biology | science that seeks to understand the living world |
| sexual reproduction | process by which two cells from different parents unite to produce the first cell of a new organism |
| asexual reproduction | process by which a single parent reproduces by itself |
| metabolism | set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life purposes |
| stimulus | a signal to which an orgtanism responds - any kind of detectable signal that carries info |
| homeostasis | process by which organisms maintain a relativfely stable internal environment |
| evolution | changes in a kind or organism over time; process by which modern organisms have descended from ancient org. |
| electron microscope | microscope that forms an image by focusing beams of electrons onto a speciman |
| compound light microscope | microscope that allows light to pass through a speciman and uses two lenses to form an image |
| cell culture | group of cells grown in a nutrient solution from a single original cell |
| cell fractionation | technique in which cells are broken into pieces and the different cell parts are separated |
| The work of scientists usually begins with | careful observation |
| Information gathered from observing changes during an experiment becomes | data |
| You suggest the athe presence of water could accelerate the growth of bread mold. This is a | hypothesis |
| Which of the folowing is not a part of how scientists work? | guessing |
| The most important rule in the laboratory is | following rules |
| Which of the following is NOT considered a safety procedure | If in doubt about any part of an activity , trust your instinct |
| The component opf an experiment that you change is called the | variable |
| Data that is numerical or can be measured is considered _____________ data | quantitative |
| The ______________microscope used in most high school laboratories | compound light |
| The process used by scientists to test a problem is thye | scientific method |
| Biology | Study of life |
| Zoology | Study of animals |
| Botany | Study of plants |
| Physics | Study of physical world (motion energy) |
| Chemistry | Study of chemicals |
| Oceanography | Study of oceans |
| Gemology | Study of gems |
| Geology | Study of rocks |
| Volcanology | Study of volcanoes |
| Astronomy | Study of univers and beyond |
| List 7 steps of scientific method | Observation, state the problem, research, create a hypothesis, design and conduct experiment, collect data, conclusion |
| Scientific method defined as | process used by scientists to test a problem |
| parts of the microscope that magnify the specimen are the | objectives |
| What are the 4 objectives on the microscopes in this lab | 4x, 10x, 40x, 100x |
| Which 2 parts do you carry it by | arm and base |
| To focus an object you must turn the ______adjustment knob | coarse |
| To clarify or sharpen an image you must turn the ________knob | fine |
| You turn the ____________ to change the objective that you are using | nose piece |
| What does the diaphragm do ? | focuses the light on a specific area |
| experiment has 2 components... | controls and variables |
| 2 types of variables... | manipulated variable adn reponding variable |
| Early experiments of life...vitalism.. | life generated by objects acquisition of "Ethers" ...led to idea of spont. gen.(flies from dead animals , mice came fr. hay) |
| Redi -experiment who? | idea challenged by Francisco Redi in 1698 |
| Redi- experiment what? | 3 jars of meat,1 open, 1 covered airtight, 1 covered byh screen (ethers no flies), flies source of maggots Biogenesis |
| Biogenesis | All life comes fr. pre-existing life |
| Anton Van Leeuwenhock | first to observe cork cells and moving specimens in rain, ponds amnd dust...animalcules |
| John Needham | wanted to disprove Redi used unsealed gravy- heated it (heat would kill all) life grew - said life came from gravy |
| Lazzars Spallanzani | said hat Needham did not heat the gravy enough boiled 2 jars sealed one not other sealed one grew nothing! organisms came fr. air...supported Redi |
| Louis Pasteur | was to settle the argument flask with curved neck open to air boiled.. no org. after a year broke neck off - quick organisms |
| "All living things come from other living things" | Louis Pasteur conclusion |
| Properties of Life (8) | Must be at least one cell Must be able to reproduce Must have hereditory material 5)Must be avble to obtain /use energy 6)Must be able to respond to environment 7)Most responses geared to maintaining *) org. must evolve |
| hereditory info | DNA RNA |
| examples of homeostasis | temperature, water content, pH of cell |
| examples of evolution | plants surviving during times with little or no water |
| 10 levels of biological organization | biosphere ecosystem community population organism organ system organ tissue cells molecules |
| biosphere | all ecosystems |
| ecosystem | community and non living surroundings |
| community | groups of populations that live together |
| population | number of specific type of organisms |
| organism | individual living things |
| organ system | group of organs with similar function |
| organ | group of cells with similar function |
| tissue | group of cells with similar function |
| cell | basic unit life of life |
| molecules | groups of atoms |
Created by:
keel
Popular Biology sets