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Study Guide Chap 4
Environmental Science
| Term | Definition |
|---|---|
| Atom- | The basic unit of matter |
| Biosphere- | All parts of Earth that host life, with all of its organisms and environments. |
| Cell- | Basic unit of life |
| Community- | All of the populations in a particular area. |
| Ecosystem- | Includes all of the living things and their physical environments within a particular area. |
| Molecule- | The basic unit of a compound. |
| Organ- | Carry out specific jobs |
| Organ system- | Are Independent but interdependent. Humans have 11 organ systems. |
| Organelle- | Carry out specific jobs for Cells |
| Organism- | A living thing |
| Population- | Group of organisms that belong to the same species. |
| Tissue- | Cells working together to do a job. |
| How many types of tissues are found in the human body? | 4 |
| All of the populations in a given area. | Community |
| All organisms are composed of one or more ________________________. | Cells |
| Cells working together toward a common goal are organized into ____. | Tissues |
| All of the organisms of the same species that live in a given area. | Population |
| All of the ecosystems on earth make up the ____________. | Biosphere |
| Tissues of different types are organized into an ________ which serves a specific purpose. | Organs |
| Organs along with accessory structures which serve a common purpose are organized into _________________. | Organ system |
| Organ systems work together for the orderly and efficient operation of ________. | Organisms |
| Two or more types of tissues join to form an _____________ that performs a specific task to help keep an organism alive. | Organ |
| The smallest units that can carry on all the functions of life are called ______. | Cell |
| The word organelle means " " | Little organ |
| If a substance is "abiotic" it is ______________ | Nonliving |
| The process by which traits are passed from parents to offspring. | Heredity |
| The organ systems perform different but ________________________ functions. | Interdependent |
| A _____________________ organism is composed of only one cell. | Unicellular |
| The smallest units that are considered to be alive are _________. | Cells |
| The basic unit of matter is the _________. | Atom |
| A substance made up of only one kind of atom is an _______________. | Element |
| Living things can be studied at different levels of organization, from the atomic level to the largest level which is the ____________________. | Biosphere |
| A multicellular organism is composed of only one cell. | False |
| Which characteristic of living things best explains why birds fly south for the winter? | Organisms are able to respond to changes in their environment. |
| An organism composed of many cells is referred to as ___________________. | Multicellular |
| A _________________ is the smallest particle that can exhibit all the properties of a compound. | Molecule |
| The basic unit of life; the smallest particle that can carry on all the processes of life. | Cell |
| All of the populations in a given area plus the abiotic factors of the environment make up ____________________. | Ecosystem |
| All of the organisms of the same species living in a given area. | Population |
| What is the term for a group of species living in the same place? | Community |
| The basic unit of a compound. | Molecule |
| A nonliving factor in an ecosystem: | Abiotic |
| A seasonal movement of organisms into and out of an area: | Migration |
| All of the ecosystems on Earth, a thin layer on and around the earth where life can exist: | Biosphere |
| Any factor in an ecosystem that is or has been alive: | Biotic |
| Anything an organism needs to live including nutrition, water, shelter, etc. | Resource |
| Are where an organism lives, a specific environment in which an organism lives: | Habitat |
| Describes the number of individual organisms in a given population per unit area: | Population Density |
| Describes the number of individual organisms in a given population at a given time: | Population size |
| Factors that control the size of a population: | Limiting factors |
| Group of organisms that share many common characteristics and are able to breed and produce fertile offspring: | Species |
| Groups of organisms of different species living in a given area, group of interacting populations: | Community |
| Large group of ecosystems with similar climates and organisms: | Biome |
| Limiting factors whose influence can vary based on the size of a population: | Density Dependent |
| Limiting factors whose influence is not affected by the size of a population: | Density Independent |
| Population distribution in which organisms are arranged in no particular order: | Random |
| Population distribution in which organisms are evenly spaced throughout an area: | Uniform |
| Population distribution in which organisms arrange themselves according to the availability of resources: | Clumped |
| Sometimes called population dispersion, describes how organisms are arranged within an area: | Population distribution |
| The arrival of organisms from outside of an area: | Immigration |
| The departure of organisms from a given area: | Emigration |
| The maximum number of organisms an ecosystem can support: | Carrying capacity |
| The role of an organism in its environment: | Niche |
| The study of how organism interact with each other and their environment: | Ecology |
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