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24 Cards in this Set
- Front
- Back
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What is the organization of life? |
Atoms Molecules Cells Tissues Organs Organ Systems Organisms Populations Communities |
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How do photosynthetic organisms and animals acquire materials and energy? |
-Photosynthetic organisms use carbon dioxide, water, and solar energy
-Animals obtain nutrients and energy through food eaten |
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Metabolism |
the chemical reactions in the cell that convert food sources into energy |
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In what two ways can reproduction occur? |
Asexually or sexually |
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Heredity |
Offspring inherit traits from their parent(s) |
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DNA |
Genetic material where inherited information is encoded |
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How do living things respond to external stimuli? |
they move toward or away from a stimulus
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Homeostasis |
the ability of an organism to maintain relatively constant internal conditions |
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Evolution |
the process by which a species changes through time; explains the unity and diversity of life |
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Adaptations |
Come about through evolution |
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What do all living things possess? |
Cells |
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What do cells carry out? |
-metabolism -maintenance of stable internal environments (homeostasis) -reproduction -use of DNA to transmit hereditary information to offspring |
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Taxonomy |
the science of identifying and classifying organisms according to these categories: Domain Kingdom Phylum Class Order Family Genus Species |
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What are the three domains? |
Archea, Bacteria, and Eukarya
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Archea |
-unicellular prokaryotes that lack a membrane-bound nucleus -live in harsh environments -may represent the first cells to have evolved |
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Bacteria |
-unicellular prokaryotes that lack a membrane-bound nucleus -may cause human disease -present in almost all habitats on earth |
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Eukarya |
-showing cellular complexity -has a nucleus and other organelles -4 kingdoms: Protista, Fungi, Plantae, Animalia |
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Autotrophs |
can make their own food
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Heterotrophs |
cannot make their own food and must depend on other living things
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Protista |
-Mostly unicellular, some multicellular
-absorb photosynthesize, or ingest food |
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Fungi |
-Some unicellular, most multicellular w/ specialized complex cells -absorb food |
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Plantae |
-multicellular w/ specialized complex cells -photosynthesize food |
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Animalia |
-multicellular w/ specialized complex cells -ingest food |
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Scientific Names |
-binomial -genus + species |
