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29 Cards in this Set
- Front
- Back
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cells that can be easily scraped from the lining of the mouth are
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epithelial tissue
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the dna of a cell is found mainly in its
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chromosomes
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the reaction between sodium metal and water can be classified as
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single replacement
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the beneficial relationship between termites and the protozoa that inhabit their digestive system is called
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symbiosis
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which subtance can be used to treat drinking water of questionable purity
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iodine
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the end product of protein digestion consist of
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amino acids
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a amgnetic compass points in the direction of
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the local magnetic field
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compounds that include fat and oils found in foods and the human body are
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lipids
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the kinetic energy of a l kg mass dropped from a height of 1 meter just before it hits the ground is
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10 joule (m x g x h )=1kg x 9.8 x 1m
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a 120-v electrical power supply produces 1/2 A to the load the pwr delivered is
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120 watts
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most cells without a cell wall would also lack
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chloroplasts
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a magnifying glass is what kind of lens used on objects how far away
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concave lens used closer than one focal length
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the glucose content of blood is regulated by
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insulin and adrenaline
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frictional forces usually do not
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increase potential energy
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for a solar wclipe to take place the
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moon must be between the sun and the earth
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the function of an enzyme is to
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speed up chemical reaction
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the most accurate description of the earths atmosphere is that it is made up of
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21% oxygen,78%nitro,.03%carbon dioxide trace rare gases water vapor
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a vibating tuning fork placed in a vacuum under a bell jar will
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be inaudible
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3 ingredients found most often in commercial fertilizers are
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nitrogen, phosphorus and potassium
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to which organism is the whale most closely related?
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horse
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what is the correct formula for dry ice
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CO2
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in a vacuum radio waves and visible light waves have the same
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speed
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which structure in the human eye performs the same function as the film in a camera
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retina
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parallel rays of light after reflection from a plane flat mirror will be
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parallel
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which of the following determines the sex of a human baby
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sperm cell
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isotopes of the same element have the same number of
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ELECTRONS AND PROTONS
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erosion and depletion are problems associated with
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soil conservation
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an isulator is amaterial with
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few free electrons
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light from the sun takes aproximately how long to reach earth
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8 min.
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