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Bio7Characteristics
7 Characteristics of Life
| Question | Answer |
|---|---|
| 1st characteristic: | Living things are composed of cells |
| 2nd characteristic: | Living things have different levels of organization |
| 3rd characteristic: | Living things use energy |
| 4th characteristic: | Living things respond to their environment |
| 5th characteristic: | Living things grow |
| 6th characteristic: | Living things reproduce |
| 7th characteristic: | Living things adapt to their environment |
| T or F: Single-cell organisms have everything they need to be self-sufficient. | True |
| In multicellular organisms, specialization _________ until some cells do only certain things. | increases |
| How many types of organizations do organisms have? | 2 |
| Organisms have both _________ and ________ organization. | molecular; cellular |
| What are the levels in which organisms organize their cells? Describe each. | 1) tissue - a group of cells that perform a common function; 2) organ - a group of tissues that perform a common function; 3) organ system - a group of organs that perform a common function; 4) organism - any complete living thing |
| What do organisms use energy for? | Maintenance and growth |
| What is behavior? | A complex set of responses |
| Cell division: | the orderly formation of new cells |
| Cell enlargement: | the increase in size of a cell |
| Why do cells grow larger? | Cells must grow to a certain size so they can divide to form more cells. |
| Asexual reproduction: producing offspring without the use of _______. | gametes |
| gamete: | A cell that fuses with another cell in fertilization |
| Adaptations: | Traits that give organisms an advantage in a certain environment |
| T or F: Variation of individuals is not important for a healthy species | False |
| Do all living things have the characteristics of life? If your answer is no, give an example. | Yes; all of the characteristics of life is required in order for a living organism, and its species, to survive. |
| Name some non-living thing that uses energy. | Computers, lightbulbs, other electronics, etc. |
| Name some non-living thing that grows. | Buildings, cities, etc. |
| What is the concept (idea) of biological organization? | Biological organization is an attempt to make the complex nature of life easier to comprehend by reducing it into simpler/fundamental parts or interactions |
| What are examples of some different levels of biological organization? | Biomes, ecosystems, communities, species, populations of a species, organisms, organ systems, organs, tissues, cells, organelles, molecular assemblies, macro-molecules, small molecules, atoms, subatomic particles |
| epithelial tissues: | cells that cover body surfaces |
| connective tissue: | supports and strengthens other tissues |
| Living organisms are made up of types of molecules called _______ _________. | organic compounds |
| Organic compounds are based on the element ______. | carbon |
| Living organisms are made of _________ that contain ______. | molecules; carbon |
| Living organisms make up ___________ that make up communities that combine with ________ to make up __________. | populations; abiotics; ecosystems |
| abiotic: | non-living |
| biotic: | living |
| community: | populations that interact with one another in an area |
| ecosystem: | a group of organisms living and reacting to their environment |
| population: | a group of freely acting individuals of the same species |
| biome: | a large area dominated by characteristic plants and animals (e.g. desert, tundra, rain forest) |
| T or F: Biological organization consists of different levels of organization depending on the structural complexity of nature. | True |
| homeostasis: | the ability of an organism to maintain a condition of stability in its internal environment when dealing with external changes (e.g. in response to excessive heat, humans sweat to keep cool, thus maintaining their normal body temperature) |
| biosphere: | the region on, below, or above the Earth's surface where life exists |
| unicellular: | single-celled |
| organelles: | specialized structures inside a cell (e.g. nucleus, mitochondria, etc.) |
| molecular assemblies: | large organized sets of molecular units that make up organelles |
| macro-molecules: | large molecules consisting of many subunits |
| small molecules: | building blocks from which larger molecules are made |
| hypothesis: | a proposed explanation for a phenomenon |
| independent variable: | the variable that you directly change in the experiment (usually only one) |
| dependent variable: | the variable that changes in response to the changes in the independent variable (can be many) |
Created by:
williamsc
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