MTTC Integrated Science Secondary (94) Exam With Complete Solutions
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Course
MTTC Integrated Science
Institution
MTTC Integrated Science
MTTC Integrated Science Secondary (94) Exam With Complete Solutions
What are the 5 steps in the Scientific Method?
1. Identify a problem or pose a question based on an observation.
2. Formulate a hypotheses.
3. Conduct experiments or tests the hypotheses.
4. Observe and record the results.
5....
MTTC Integrated Science (Secondary) Exam
Questions With Verified Answers
Graticule slide
marked with grid line, useful for counting or estimating a quantity
Preparing acid solutions
Always add acid to 2/3 water, then add rest of water
# of Animal species
over 1 million species and about 30 divisions
# of insects
800,000 species, half of animal kingdom
Characteristics of animal kingdom
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
method of getting energy by eating food that has energy releasing substances
Mendel
Father of genetics, experimented with pea plants to observe inherited traits
McClintock
Created the first genetic map for maize, demonstrated recombination, how transposition flips the
switch for traits.
Watson and Crick
Discovered the structure of DNA double helix and helped explain how DNA replicates.
Leeuwenhoek
First to observe single celled organisms with homemade magnifying glass. Observed bacteria, yeast,
plants and other microscopic organisms.
Linnaeus
Created a method of classifying plants and animals, a way to organize and study large amounts of
data, called Linnaean taxonomy.
Darwin
natural selection, survival of the fittest by observing finches. Also discovered fossils, noted
stratification, dissected marine animals and interacted with indigenous peoples.
,Scientific fact
an objective and verifiable observation
Scientific theory
greater body of accepted knowledge, principles, relationships that might explain a fact.
Hypothesis
Educated guess that is not yet proven. Used to predict the outcome of an experiment
Law
An explanation of events that always leads to the same outcome.
Model
Used to explain something on a smaller scale or in simpler terms.
Scientific Method
Identify a problem
Formulate a hypothesis
Conduct experiments
Observe results
Draw conclusions
Peer review
Random errors in data
Sometimes called noise, wildly different from the rest of the data. Does not affect average
Systematic errors in data
Shows up consistently across a data set, may be the result of a flaw in experimental design. Affects
average, also known as bias.
Mean
Average
Median
Middle number
Mode
Value that appears most frequently
Range
Difference between highest and lowest numbers
Standard Deviation
How far from the mean is from a single data likely to be, measures dispersion of data set
, Ampere (A)
SI unit used to measure electric current
Kelvin (K)
SI unit used to measure thermodynamic temperature
Candela (cd)
SI unit used to measure luminous intensity
National Science Education Standards
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
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
Mouths are formed from the blastospore. Ex: Mollusca, Annelida, Arthropods
Animal phyla that lack a coelom or have a psedocoelom
Porifera, Cnidaria, Platyhelminthes, Nematoda
# of invertebrates in animal kingdom
98% of animal species, 30 phyla
Phylum Chordata
Vertebrates, two cavities - thoracic holds heart and lungs, abdominal holds digestive organs. All have
endoskeletons
Deuterostomic phyla
Anuses are formed from blastopores, Echinodermata and Chordata
Epithelial tissue
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
Used to bind, support, protect, store fat, and fill space. Can be loose or fibrous, ex: cartilage, bone,
tendons, ligaments, blood, and protective layers.
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