Exam 1 Vocabulary

Exam 1 Vocabulary - Chapter 2 Vocabulary Blind Experiment...

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Blind Experiment – Those in which those carrying out the experiment don’t know until after data has been gathered and analyzed which was the experimental treatment and which was the control. Controlled Study – Those in which comparisons are made between experimental and control populations that are identical (as far as possible) in every factor except the one variable being the study. Double-Blind Study – One in which neither the experimenter nor the subjects know until after data has been gathered and analyzed which was the experimental treatment and which was the control. Reproducibility – Making an observation or obtaining a particular result more than once. Manipulative Experiment – in which conditions are deliberately altered, and all other variables are held constant. Chapter 3 Vocabulary: Atomic Number – the characteristic number of protons per atom of an element. Biological Community - The populations of plants, animals, and microorganisms living and interacting in a certain area at a given time. Biomass – The total mass or weight of all the living organisms in a given population or area. Carbon Cycle – The circulation and reutilitarian of carbon atoms, especially via the processes of photosynthesis and respiration. Carbon Sink – Places of carbon accumulation, such as in large forests (organic compounds) or ocean sediments (calcium carbonate); carbon is thus removed from the carbon cycle for moderately long to very long period of time. DNA (deoxyribonucleic acid) – A giant molecule composed of millions or billions of nucleotides (sugars and bases called purines and pyramidines held together by phosphate bonds) that form double helix and store genetic information in all living cells. Detritivores – Organisms that consumer organic litter, debris, and dung. Food Chain – A linked feeding series; in an ecosystem, the sequence of organisms through which energy and materials are transferred, in the form of food, from one trophic level to another. Food Web – A complex, interlocking series of individual food chains in an ecosystem.
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Exam 1 Vocabulary - Chapter 2 Vocabulary Blind Experiment...

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