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Hint
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Answer
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The ability of a living thing to keep conditions inside its body constant
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Homeostasis
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Large molecule formed when many smaller molecules bond together
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Polymer
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The movement of materials (nutrients) in a local ecosystem
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Nutrient Cycle
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A living thing that has (or can develop) the ability to act or function independently
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Organism
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Having a pair of equal and opposite charges
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Polar
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Term referring to matter having an excess of electrons (a negative charge) or a deficiency of electrons (a positive charge)
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Charged
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A liquid substance capable of dissolving other substances
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Solvent
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A chemical bond that involves sharing a pair of electrons between atoms in a molecule
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Covalent Bond
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A major biotic community characterized by the dominant forms of plant life and the prevailing climate
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Biome
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A simple compound whose molecules can join together to form polymers
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Monomer
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An attraction between molecules of different substances
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Adhesion
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Attraction between molecules of the same substance
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Cohesion
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An organism that depends on complex organic substances for nutrition
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Heterotroph
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An organism that obtains energy by feeding on other organisms
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Consumer
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Any animal that feeds chiefly on grass and other plants
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Herbivore
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A gas that contributes to the greenhouse effect by absorbing infrared radiation
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Greenhouse Gas
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Process by which plants use the sun’s energy to convert water and carbon dioxide into sugars
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Photosynthesis
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The emission of water vapor from the leaves of plants
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Transpiration
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Water that leaks out and slowly moves deeper underground
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Seepage
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The process of wave-like muscle contractions of the alimentary tract that moves food along
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Peristalsis
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Protein substances that speed up chemical reactions
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Enzymes
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The cavity in which the large intestine begins and into which the ileum opens
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Cecum
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The energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
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Activation Energy
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An enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids that can be absorbed into the bloodstream
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Lipase
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An enzyme from the pancreas that digests proteins in the small intestine
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Trypsin
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Contains most of a cell’s genetic material in the form of DNA (deoxyribonucleic acid)
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Chromosomes
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All of the environments on Earth that support life
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Biosphere
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An organism that makes its own food
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Autotroph
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Cyclic movement of carbon in different chemical forms from the environment to organisms and then back to the environment
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Carbon Cycle
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An organism (like the earthworm) that feeds on decaying matter after it has been broken down by decomposers
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Detritivore
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Two strands of nucleotides wound about each other; structure of DNA
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Double Helix
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The variety of different types of genes in a species or population
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Genetic Variation
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An organism’s genetic makeup, or allele combinations
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Genotype
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