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BIO101 Ch1
| Question | Answer |
|---|---|
| adaptation | modifications that make organisms suited to their way of life |
| cell | the smallest, most basic unit of life |
| unicellular | being only a single cell |
| multicellular | composed of many types of cells |
| tissues | a group of similar cells combined to perform a common function |
| organs | combination of two or more different tissues performing a common function |
| organ systems | group of related organs working together |
| energy | the capacity to do work |
| metabolism | all the chemical reactions that occur in a cell |
| photosynthesis | a process that transforms solar energy into chemical energy |
| homeostasis | the mainenance of internal conditions within certain boundaries |
| reproduce | to make another organism like itself |
| genes | long DNA molecules which encode for a protein |
| evolution | the process by which species have changed and diversified since life arose, explains the unity - all living things share the same characteristics - and diversity of life |
| taxonomy | the discipline of identifying and classifying organisms according to certain rules |
| species | group of similar organisms capable of interbreeding |
| genus | a grouping which includes species most closely related to each other through evolution |
| kingdom | one of the categories of taxa; there are five Kingdoms |
| domain | largest of the categories; there are three domains |
| Domain Bacteria | Contains prokaryotic cells - the bacteria |
| Domain Archaea | Contains prokaryotic cells which often live in extreme environments and have different molecular composition than bacteria - the archaea |
| Domain Eukarya | Domain containing the four eukaryotic Kingdoms - Protista, Animalia, Plantae,and Fungi |
| natural selection | mechanism of evolution caused by environmental selection of organisms most fit to reproduce and best adapted to their environment |
| biosphere | zone of air, land and water at the surface of the earth in which living organisms are found |
| population | all the members of a species within a particulat area |
| community | all the populations which interact with each other within the same environment |
| ecosystem | biologic community together with the axxociated abiotic (nonliving) environment |
| observation | step in the scientific method where data are collected before a conclusion is drawn |
| inductive reasoning | using specific observations and the process of logic to arrive at a hypothesis |
| deductive reasoning | hypothesis testing - often identified by "If...then" statements |
| hypothesis | a possible explanation which can be tested by experimentation |
| experiment | a series of procedures to test a hypothesis |
| experimental design | the manner in which an experiment is conducted |
| experimental variable | the condition which is deliberately changed in an experiment |
| test groups | the group(s) exposed to the experimental variable |
| control group | the group not exposed to the experimental variable |
| model | a respresenation of an actual object |
| data | the results of an experiment |
| conclusion | statement made following an experiment as to whether the results support the hypothesis |
| scientific theory | the accepted explanation for how the world works |
| principle | theory that is generally accepted by an overwhelming number of scientists; also called a law |
| technology | application of scientific knowledge for a practical purpose |
| bioethics | branch of ethics concerned with biological technology |
| biodiversity | the variation of life on earth; a significant bioethical issue |
| extinction | the death of a species or larger group. |
Created by:
KBerlyn
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