MTTC Integrated Science Correct Questions & Answers(RATED A+)

# of Animal species - ANSWER over 1 million species and about 30 divisions # of insects - ANSWER 800,000 species, half of animal kingdom Characteristics of animal kingdom - ANSWER muliticellular, heterotrophic, reproduce sexually, do not have cell walls or chloroplasts, can move at some stage of life, can rapidly respond to environment due to specialized tissues like nerve and muscle Heterotrophic - ANSWER method of getting energy by eating food that has energy releasing substances Mendel - ANSWER Father of genetics, experimented with pea plants to observe inherited traits McClintock - ANSWER Created the first genetic map for maize, demonstrated recombination, how transposition flips the switch for traits. Watson and Crick - ANSWER Discovered the structure of DNA double helix and helped explain how DNA replicates. Leeuwenhoek - ANSWER First to observe single celled organisms with homemade magnifying glass. Observed bacteria, yeast, plants and other microscopic organisms. Linnaeus - ANSWER Created a method of classifying plants and animals, a way to organize and study large amounts of data, called Linnaean taxonomy. Darwin - ANSWER natural selection, survival of the fittest by observing finches. Also discovered fossils, noted stratification, dissected marine animals and interacted with indigenous peoples. Scientific fact - ANSWER an objective and verifiable observation Scientific theory - ANSWER greater body of accepted knowledge, principles, relationships that might explain a fact. Hypothesis - ANSWER Educated guess that is not yet proven. Used to predict the outcome of an experiment Law - ANSWER An explanation of events that always leads to the same outcome. Model - ANSWER Used to explain something on a smaller scale or in simpler terms. Scientific Method - ANSWER Identify a problem Formulate a hypothesis Conduct experiments Observe results Draw conclusions Peer review Random errors in data - ANSWER Sometimes called noise, wildly different from the rest of the data. Does not affect average Systematic errors in data - ANSWER Shows up consistently across a data set, may be the result of a flaw in experimental design. Affects average, also known as bias. Mean - ANSWER Average Median - ANSWER Middle number Mode - ANSWER Value that appears most frequently Range - ANSWER Difference between highest and lowest numbers Standard Deviation - ANSWER How far from the mean is from a single data likely to be, measures dispersion of data set Ampere (A) - ANSWER SI unit used to measure electric current Kelvin (K) - ANSWER SI unit used to measure thermodynamic temperature Candela (cd) - ANSWER SI unit used to measure luminous intensity National Science Education Standards - ANSWER Understand scientific concepts Appreciate "how we know" what we know in science Understand the nature of science Develop the skills necessary to become independent inquirers about the natural world Develop the skills necessary to use the skills, abilities, and attitudes associated with science Regression analysis - ANSWER Method of analyzing sets of data and sets of variables that involve studying how the typical value of the dependent variable changes when one independent variable changes and the other remains the same. Protosomic phyla - ANSWER Mouths are formed from the blastospore. Ex: Mollusca, Annelida, Arthropods Animal phyla that lack a coelom or have a psedocoelom - ANSWER Porifera, Cnidaria, Platyhelminthes, Nematoda # of invertebrates in animal kingdom - ANSWER 98% of animal species, 30 phyla Phylum Chordata - ANSWER Vertebrates, two cavities - thoracic holds heart and lungs, abdominal holds digestive organs. All have endoskeletons Deuterostomic phyla - ANSWER Anuses are formed from blastopores, Echinodermata and Chordata Epithelial tissue - ANSWER Found on body surfaces and lining body cavities, ex: skin and stomach lining. Functions are protections, secretion of chemicals, absorption of chemicals, response to external stimuli. Contain no blood vessels so must receive nourishment from underlying tissue Connective tissue - ANSWER Used to bind, support, protect, store fat, and fill space. Can be loose or fibrous, ex: cartilage, bone, tendons, ligaments, blood, and protective layers. 3 types of muscle tissues - ANSWER Cardiac, smooth and skeletal (striated) 11 Organ systems of the body - ANSWER Skeletal Muscular Nervous