Bisc 104 Test 1 Terms

Bisc 104 Test 1 Terms - Chapter 1 Biology The scientific...

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Chapter 1 Biology The scientific study of life. Ecosystems A biological community and its physical environment Producers An organism that makes its own food from plants and natural things Consumers An organism that obtains its food by eating plants or animals that have eaten plants. Biological Diversity All the variety of life Prokaryotic Cell A cell with no nucleus. Ex: bacteria and archaea Eukaryotic Cell A cell that with a nucleus. Domain Bacteria One of the three Domains of life. Prokaryotic cell Domain Archaea One of the three domains of life. Prokaryotic cell Domain Eukarya One of the three domains of life. Eurkaryotic cell Evolutionary Tree Fossil Record The chronicle of evolution over millions of years of geologic time engraved in the order in which fossils appear in rock strata. Charles Darwin British biologist who created idea of natural selection. Natural Selection Darwin’s idea of how species’ physical characteristics changed to adapt to their environments. Artificial Selection Humans breeding, choosing specific characteristics. Hypothesis A tentative explanation for an experiment. Experiments Scientific Method Mimicry Mimics another animal for defense and protection. DNA Chapter 7 Photosynthesis Process by which plants and other things use light energy to make sugars and other organic food molecules from carbon dioxide and water. ATP The main energy source for cells. Autotroph Organism that makes its own food.
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Mesophyll The green tissue in the interior of a leaf. Stomata Tiny pores by which carbon dioxide exits the leaf. Most stomata are found on the lower epidermis of leaves. Chloroplast Organelles present in certain plant cells. Green parts of a plant have chloroplasts, which carry out photosynthesis. Thylakoid Dislike membrane sacs in the stroma. Stroma Thick fluid Light Reactions One of two stages of photosynthesis. Converts solar energy to chemical energy. Uses light energy to drive the synthesis of ATP and NADPH. Calvin Cycle The other stage of photosynthesis. Makes sugar from carbon dioxide. Electromagnetic Spectrum The full range of radiation, from the very short wavelengths of gamma rays to the very long wavelengths of radio signals. Wavelength Distance between the crests of two adjacent waves. Chlorophyll a Different pigments absorb light of different wavelengths, and chloroplast contain several kinds of pigments. One is Chlorophyll a. Absorbs mainly blue-violet and red light. Looks like green grass because it reflects mainly green light. Carotenoids Family of yellow-orange pigments that absorb mainly blue-green light. . Sugar Water Oxygen Photosystem Chlorophyll is organized into photosystems. Each photosystem has a cluster of a few hundred pigment molecules. C3 Plants
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This note was uploaded on 04/07/2008 for the course BISC 104 taught by Professor ? during the Spring '06 term at Ole Miss.

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Bisc 104 Test 1 Terms - Chapter 1 Biology The scientific...

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