Ans: marked with grid line, useful for counting or estimating a quantity
2). Preparing acid solutions
Ans: Always add acid to 2/3 water, then add rest of water
3). # of animal species
Ans: over 1 million species and about 30 divisions
4). # of insects
Ans: 800,000 species, half of animal kingdom
5). Characteristics of animal kingdom
Ans: 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
6). Heterotrophic
Ans: method of getting energy by eating food that has energy releasing substances
7). Mendel
Ans: Father of genetics, experimented with pea plants to observe inherited traits
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, 8). Mcclintock
Ans: Created the first genetic map for maize, demonstrated recombination, how
transposition flips the switch for traits.
9). Watson and crick
Ans: Discovered the structure of DNA double helix and helped explain how DNA
replicates.
10). Leeuwenhoek
Ans: First to observe single celled organisms with homemade magnifying glass.
Observed bacteria, yeast, plants and other microscopic organisms.
11). Linnaeus
Ans: Created a method of classifying plants and animals, a way to organize and study
large amounts of data, called Linnaean taxonomy.
12). Darwin
Ans: natural selection, survival of the fittest by observing finches. Also discovered
fossils, noted stratification, dissected marine animals and interacted with indigenous
peoples.
13). Scientific fact
Ans: an objective and verifiable observation
14). Scientific theory
Ans: greater body of accepted knowledge, principles, relationships that might explain
a fact.
15). Hypothesis
Ans: Educated guess that is not yet proven. Used to predict the outcome of an
experiment
16). Law
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, Ans: An explanation of events that always leads to the same outcome.
17). Model
Ans: Used to explain something on a smaller scale or in simpler terms.
18). Scientific method
Ans: Identify a problem
Formulate a hypothesis
Conduct experiments
Observe results
Draw conclusions
Peer review
19). Random errors in data
Ans: Sometimes called noise, wildly different from the rest of the data. Does not
affect average
20). Systematic errors in data
Ans: Shows up consistently across a data set, may be the result of a flaw in
experimental design. Affects average, also known as bias.
21). Mean
Ans: Average
22). Median
Ans: Middle number
23). Mode
Ans: Value that appears most frequently
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