Term
| what are living things composed of |
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Definition
| major systems that function in reproduction, growth, maintenance, and regulation |
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Term
| what do body cells do to replace themselves |
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Definition
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Term
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Definition
| center of the cell that controls the cell function of reproduction or in making new proteins |
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Term
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Definition
| "power house" of the cell, where the cell makes and releases energy |
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Term
| what do plants use chloroplasts for |
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Definition
| to create energy from sunlight |
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Term
| whats do plant and animal cells have |
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Definition
| plant cells have a rigid cell wall and a cell membrane and animal cells only have a cell membrane |
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Term
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Definition
| internal structures of a cell (analogous to the organs of multicellular organisms) |
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Term
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Definition
| the storage container of the cell |
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Term
| what is the endoplasmic reticulum |
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Definition
| the cells transport system |
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Term
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Definition
| where a cell packages materials |
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Term
| what is the structural basis of most organisms |
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Definition
| the cell and most organisms are single cells, while some, including humans, are multicellular |
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Term
| what happens in multicellular organisms |
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Definition
| cells grow and divide to make more cells in order to form and repair various organs and tissues |
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Term
| what do cells with similar functions do |
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Definition
| come together to form tissues |
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Term
| what do many tissues formed together work to make |
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Definition
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Term
| what do many organs working together make |
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Definition
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Term
| what do all organ systems make up |
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Definition
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Term
| what do the levels of structural organization for function in living things inlude |
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Definition
| cells, tissues, organs, systems, and organisms |
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Term
| what do cells with similar functions have in contrast to cells with different functions |
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Definition
| cells with similar functions have similar structures, where as those with different structures have diferent functions |
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Term
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Definition
| a response to the environment and influences growth, development, maintenance, and reproduction |
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Term
| what is asexual reproduction in plants and animals |
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Definition
| fast, no energy wasted finding a mate, its easy to make many offspring |
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Term
| what is sexual reproduction in plants and animals |
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Definition
| allows for the recombination of genes which makes for a greater variation of offspring (more adaption to the environment) |
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Term
| what is the cause for the variation in each species |
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Definition
| due to the exchange and interaction of genetic information as it is passed from parent to offspring |
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Term
| what is the affect of survival characteristics |
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Definition
| organisms in a population live long enough to reproduce |
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Term
| what does the fossil record do |
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Definition
| provides evidence that changes in the kinds of plants and animals in the environment have been occuring over time |
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Term
| what is radiometric data used for |
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Definition
| to date the age of fossils using radioactive decay of isotopes |
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Term
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Definition
| the time it takes for half of the radioactive material to decay |
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Term
| what can scientists do by using various radioactive isotopes |
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Definition
| they can date the objects back to the beginning of the solar system (4.5 billion years) |
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Term
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Definition
| depend on other living things to reproduce and maintain themselves. they arent considered totally alive because they cannot reproduce by themsleves |
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Term
| what do biological adaptions include |
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Definition
| changes in the structures, behaviors, or physiology that enhance reroductive success in a particular environment |
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Term
| what is the classification if living things based on |
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Definition
| a given set of criteria and is a tool for understanding biodiversity and interrelationships |
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Term
| what is the result of interactions of organisms with each other and with the nonliving parts of their environment |
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Definition
| result in the flow of energy and the cycling of matter throughout the system |
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Term
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Definition
| is maintained by a continous input of energy from the sun and by the recycling of the atoms that make up the molecules of living organisms |
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Term
| what is the energy of the sun produced by |
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Definition
| hydrogen fusion at the core of the sun where small amounts of matter are convertedto huge amounts of energy (the temp has to be millions of degrees) |
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Term
| what is the formula of energy released |
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Definition
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Term
| what happens when nature is left on its own |
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Definition
| nature tends to recycle everything and keeps things in balance (populations of predators and prey) |
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Term
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Definition
| evaporation and transpiration, condensation, precipitation, runoff |
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Term
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Definition
| where all weather occurs in the lowest layer of the atmosphere |
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Term
| why is it difficult to breathe on top of mountains without equipment |
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Definition
| the air gets increasingly thinner the higher you go |
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Term
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Definition
| atmospheric CO2 , photosynthesis,exhalation of CO2 by humans and animals or by combustion, decomposition |
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Term
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Definition
| rock changing from igneous, to metamorphic, and sedimentary |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| from layers of dirt and sediments |
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Term
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Definition
| some are renewable and some are nonrenewable |
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Term
| what is true about all biotic and abiotic factors |
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Definition
| they are interrelated and if one factor is changed or removed, it impacts the availability of other resources within the system |
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Term
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Definition
| alive (any living organism be it plant or animal) |
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Term
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Definition
| inorganic material (rock, soil, ...) |
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Term
| what can a brief change in the limited resources of an ecosystem do |
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Definition
| may alter the size of a population or the average size of individual organisms and the long term change may result in the elimination of animal and plant populations inhabiting the earth |
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Term
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Definition
| humans are part of the ecosystem and their activities may deliberatly or inadvertently alter the equilibrium in ecosystems |
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Term
| what have the study of events lead scientists to |
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Definition
| discoveries that can provide information about the inquiry process and its effects |
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Term
| what is essential to the scientific method and maintaining an investigators credibility with other scientists and society |
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Definition
| accurate record keeping,openness, and replication |
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Term
| what happens if you change one or more variables |
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Definition
| may alter the outcome of an investigation |
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Term
| what is a controlled experiment |
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Definition
| one where only one variable is changed at a time |
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Term
| what is an independent variable |
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Definition
| the one the experimenter changes |
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Term
| what is a dependent variable |
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Definition
| the variable the experimenter has measured |
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Term
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Definition
| the density of any substance regardless the size is constant |
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Term
| what happens when water freezes |
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Definition
| it expands so it becomes less dense |
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Term
| what happens as the temperature of most matter increases |
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Definition
| the density increases (as it expandsbut keeps the same mass) |
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Term
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Definition
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Term
| how does the earth rotate |
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Definition
| west to east (24hours) and thats why the sun rises in the east |
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Term
| how does the earth revolve |
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Definition
| counterclockwise (365 1/4 days) |
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