MTTC Integrated Science (Secondary) Exam Questions with Verified Answers

Graticule slide - Answer-marked with grid line, useful for counting or estimating a quantity Preparing acid solutions - Answer-Always add acid to 2/3 water, then add rest of water # 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.