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Biology Chapter 1
Question | Answer |
---|---|
The study of living things - the science of life. | Biology |
The 7 characteristics of living organisms. | Cellular organization, Order, Sensitivity, Growth development and reproduction, Energy untilization, Evolutionary adaption, Homeostasis |
The process by which organisms maintain relatively constant internal conditions. | Homeostasis |
The fundamental element of matter. | atom |
The basic unit of life. | Cell |
A group of complex biological molecules within a cell. | Organelle |
The three levels of cellular organization. | Tissues, Organs, Organ systems |
Groups of similar cells that act as a functioning unit. | Tissues |
Body structures composed of several different tissues grouped together in a structural and functional unit. | Organs |
Groups of organs that are interconnected. | Organ systems |
The four levels of the living hierarchy. | Population, Species, Biological community, Ecosystem |
A group of organisms of the same species living in the same place. | Population |
All the populations of a kind of organism. | Species |
All the populations of different species living together in one place. | Biological community |
A biological community and the physical habitat within which it lives together. | Ecosystem |
The novel properties which emerge at each higher level in the livng higherarchy. | Emergent properties |
Type of reasoning that applies general principles to predict specific results. | Deductive reasoning |
Type of reasoning that uses specific observations to construct general scientific principles. | Inductive reasoning |
A suggested explanation that accounts for certain observations. | Hypothesis |
The test of a hypothesis. | Experiment |
The theory that says that all living organisms consist of cells. | Cell theory |
Man who came up with cell theory. | Robert Hooke |
The entire set of DNA instructions that specifies a cell. | Genome |
Clusters of atoms. | molecules |
All living things share certain key characteristics including: cellular organization, sensitivity, growth, development and reproduction, adaption, and homeostasis. | (blank) |
Factors that influence the outcome of an experiment. | Variables |
An experiment in which all variables are left unaltered. | A control experiment |
A proposed explanation for some natural phenomenon. | Theory |
The body of interconnected concepts, supported by scientific reasoning and experimental evidence, that explains the facts in some area of study. | Theory |
The scientific process involves rejecting hypotheses that are inconsistent with experimental results or observations. Hypotheses that are consistent with available data are conditionally accepted. The formulation of a hypothesis often involves creative | insight. |
The theory that natural laws produce change over time. | Evolution |
Darwin was the first to propose natural selection as an explanation for the mechanisn of evolution that produced the diversity of life on earth. His hypothesis grew from his observations on a five-year voyage around the world. | (blank) |
Having the same evolutionary origin, but now differing in structure and function. | Homologous |
Having different evolutionary origins, but now having similar structure and function. | Analogous |
A discrete unit of information found within the DNA code. | gene |
The genetic material of all organisms; composed of two complememtary chains of nucleotides wound in a double helix. | DNA (Deoxyribonucleic acid) |
The use of selected animals to produce dertain characteristics. | Artificial selection |
Accumulated changes in nucleotide sequences over time. | Molecular clock |