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70 Cards in this Set
- Front
- Back
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Information gathered from observing a plant grow 3 cm over a two-week period results in |
Data |
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A hypothesis |
May be disproved by a single experiment |
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A controlled experiment allows the scientist to isolate and test |
A single variable |
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A theory |
May be revised or replaced |
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A well-tested explanation that unifies a broad range of observations is a |
Theory |
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The process by which organisms keep their internal conditions relatively stable is called |
Homeostasis |
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Which level of organization includes all of the other levels |
Ecosystem |
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Define: organism |
Individual living thing |
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Define: molecules |
Groups of atoms; smallest units of most chemical compounds |
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Define: groups of cells |
Tissues, organs, and organ systems |
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Define: community |
Populations that live together in a defined area |
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Define: cells |
Smallest functional unit of life |
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Define: ecosystem |
Community and its nonliving surrounding |
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Define: biosphere |
The part of earth that contains all ecosystems |
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Define: population |
Groups of organisms of one type that live in the same area |
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The three particles that make up an atom are |
Protons, neutrons, and electrons |
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The space surrounding the nucleus of an atom contains |
Electrons |
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The nucleus is made up of |
Protons and neutrons |
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If an atom contains 11 protons and 12 neutrons, its atomic number is |
11 |
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What term describes a substance formed by the combination of two or more elements in definite proportions |
Compound |
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If you stir salt into boiling water, you produce a |
Mixture called a solution |
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Identify the reactant(s) in the chemical reaction, CO2+H2O=H2CO3 |
Chemical reaction |
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A substance that accelerates the rate of a chemical reaction is called a |
Catalyst |
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Use the terms solvent and solute to describe how to prepare a salt solution |
To prepare a salt solution you evenly distribute the solute (salt) amongst the solvent (H2O) and allow the solute to dissolve |
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List the four groups of organic compounds found in living things |
Carbohydrates, nucleic acids, lipids, proteins |
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The three particles that make up an atom are protons, neutrons, and electrons. Give their location in the atom and what charge they have |
Proton= in the nucleus; positive Neutron= in the nucleus; neutral Electron= space outside the nucleus; negative |
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The combined portions of earth in which all living things exist is called the |
Biosphere |
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All of the members of a particular species that live in one area are called a |
Population |
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Green plants are |
Producers |
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What is the original source of almost all the energy in most ecosystems |
Sunlight |
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An organism that cannot make its own food is called a |
Heterotroph |
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A bird stalks, kills, and then eats an insect. Based on its behavior, what ecological terms describe the bird |
Carnivore; consumer |
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Organisms need nutrients in order to |
Carry out essential life functions |
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Construct 2 food chains |
Flowers/plants; caterpillar; bird Grass; cow; human |
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The average year-after-year conditions of temperature and precipitation in a particular region is the region's |
Climate |
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The greenhouse effect is |
A natural phenomenon that maintains earth's temperature range |
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Each of the following is an abiotic factor in the environment EXCEPT: Plant life, soil type, rainfall, or temperature |
Plant life |
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An interaction in which one organism captures and feeds on another organism is called |
Predation |
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A symbiosis in who both species benefit is |
Mutualism |
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Name the three main classes of symbiotic relationships and give examples |
Mutualism; honey bird & honey badger Commensalism; sharks/whale & fish Parasitism; parasite & fish |
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Which of the following is NOT one of the factors that play a role in population growth rate: Immigration, death rate, emigration, or demography |
Demography |
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The movement of organisms into a given area from another area, is called |
Immigration |
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When organisms move out of the population, this is known as |
Emigration |
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What are two ways a population can decrease in size |
Decreased birthrate and emigration |
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What will reduce competition within a species' population |
Fewer individuals |
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Demography is the scientific study of |
Human populations |
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About 500 years ago, the world's population started |
Growing more rapidly |
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Why did the human population begin growing exponentially about 500 years ago? Give 3 examples |
1. Vaccines provided cures to originally uncurable diseases 2. The Industrial Revolution provided a huge leap forward for human population 3. An increase in agricultural technique provided more food |
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The sum total of the genetically-based variety of living organisms in the biosphere is called |
Biodiversity |
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An increase in earth's average temperature from the buildup of carbon dioxide and other gases in the atmosphere is called |
Global warming |
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The major cause of ozone depletion is |
Chlorofluorocarbons |
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What cell structure contains the cell's genetic material and controls the cell's activities |
Nucleus |
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Prokaryotes lack |
A nucleus |
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Which cell contains a nucleus |
Eukaryotes |
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What organisms are prokaryotes |
Bacteria |
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Which organelle makes protein using coded instructions that come from the nucleus |
Ribosome |
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Which organelle converts food into compounds that the cell uses for growth, devleopment, and movement |
Mitochondrion |
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Which organelles help provide cells with energy |
Mitochondria and chloroplasts |
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What structure serves as the cell's boundary from its environment |
Cell membrane |
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Diffusion is the movement of molecules from |
An area of high concentration to an area of low concentration |
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The diffusion of water across a selectively permeable membrane is called |
Osmosis |
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The cells of multi cellular organisms are |
Specialized to perform particular functions |
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Which list represents the levels of organization in a multi cellular organism from the simplest level to the most complex level: A. Cell, tissue, organ system B. Organ system, organ, tissue, cell C. Tissue, organ, organ system D. Cell, tissue, organ, organ system |
Cell, tissue, organ, organ system |
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How do prokaryotes and eukaryotes differ? 2 ways and examples |
Prokaryote= no nucleus, smaller and simple; bacterial Eukaryote= nucleus, more complex; animals |
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List the four levels of organization in order from simplest to most complex and give an example of each |
Cell; muscle Tissue; smooth muscle Organ; lung Organ system; respiratory |
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Photosynthesis uses oxygen to convert water and carbon dioxide into |
Oxygen and high-energy sugars |
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Plants gather the sun's energy with light-absorbing molecules called |
Pigments |
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What affects the rate of photosynthesis |
Water, temperature, light intensity |
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What is the correct sequence of scents in cellular respiration |
Glycosis, Krebs cycles, electron transport |
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What is released during cellular respiration |
Energy |
