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All the organisms living in a particular area along with the nonliving factors they interact with (water, air, sunlight); biological community and its physical environment
Organs that work together to perform particular functions (nervous system, digestive system)
Structure consisting of several tissues adapted as a group to perform specific functions (brain, spinal cord, nerves)
Unit of living matter, separated from its environment by a membrane (lowest level that can perform activities required for life)
New properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases
Cell lacking a nucleus, membrane, and most other organelles; found only in Bacteria and Archaea domains
Cell with a nucleus, membrane and other internal organelles; all organisms except Bacteria and Archaea domains composed of eukaryotic cells
Experimentation is only one part of the scientific process, but it is a very important step because it _____.
allows rejection of some alternative hypotheses
Lifeʼs levels of organization define the scope of biology
Biosphere, Ecosystem, Community, Population, Organism ----> Organ system ---> Organ ---> Tissue ----> Cell ---> Molecular
determines whether an association (or relationship between 2 categorical variables in a sample is likely to reflect a real association between these 2 variables in the population
8 Characteristics of Life
Order, regulation, Growth and development,energy utilization, Response to environment, Reproduction, Evolution
Living organisms and their environments form interconnecting webs
Energy flow in ecosystems, Carbon cycling, Nitrogen cycle
Biological connections in our lives
Technology (bioengineering), Global warming, Ozone depletion, Stem Cell research
What did Darwin noitce?
He realized that numerous small changes in populations caused by natural selection lead to major alterations of species
two things an ecosystem must accomplish:
-recycle chemicals necessary for life
-move energy through the ecosystem (energy enters as light and exits as heat)
The broad taxonomic category above phylum or division; a taxonomic scheme that divided all diversity
Taxonomic category above the kingdom level; three domains of life are Archaea, Bacteria, and Eukarya
Domain of eukaryotes, organisms made of eukaryotic cells; includes protists, plants, fungi, and animals
Widely accepted explanatory idea that is broad in scope and supported by a large body of evidence
process by which individuals that are better suited to their environment survive and reproduce most successfully (survival of the fittest)
An inherited characteristic that enhances an organism's ability to survive and reproduce in a particular environment
Tentative explanation a scientist proposes for a specific phenomenon that has been observed
An experiment with at least two tests, a control group (used for comparison) and a test of the effect of a single variable while keeping all other factors the same
At which point is an investigator most likely to use deductive reasoning?
In establishing a test of a hypothesis
A pesticide kills 99.9% of a pest population. What will be the result of the continued application of this pesticide?
Through time, the pesticide will become less effective at killing the pest
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