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29 Cards in this Set
- Front
- Back
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incenter
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definition: intersection of angle bisectors
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centroid
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definition: intersection of medians
how to: middle of segment to opposite vertex |
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circumcenter
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definition: intersection of perpendicular bisectors
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orthocenter
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definition: intersection of altitudes
how to: perpindicular line through angle bisectors |
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Science differes from other disciplines, such as history and the arts, because science relies on
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testing explanations
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Information gathered from observing a plant grow 3 cm over a 2-week period results in
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data
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A hypothesis
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may be disproved by a single experiment
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The amount of light and temperature are examples of
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factors to which living things respond
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To observe a small, living organism, a scientist must use a (an)
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compound light microscope
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A substance with a pH of 6 is called
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an acid
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Amino acid is to protein as
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simple sugar is to starch
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RNA molecules are made of
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nucleotides
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Diffusion is the movement of molecules from
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an area of high concentration to an area of low concentration
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Plants gather the sun's energy with light-absorbing molecules called
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pigments
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Most plants appear green because chlorophyll
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does not absorb green light
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In the presence of oxygen, glycosis is followed by
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the Krebs cycle
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When the body needs to exercise for longer than 90 seconds, it generates ATP by carrying out
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cellular respiration
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If you want to control your weight, how long should you exercise aerobically each time that you exercise?
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more than 20 minutes
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The energy needed to win a 2-minute footrace is produced by
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lactic acid fermentation
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Why do well-conditioned athletes have to pace themselves for athletic events that last several hours?
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cellular respiration releases enery more slowly than fermentation does
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If a normal cell divides, you can assume that
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it has grown to its full size
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In the P generation, a tall plant is crossed with a short plant. The probability that an F2 plant will be tall is what percentage
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75%
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How many different allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY?
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2
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Unlike mitosis, meiosis results in the formation of
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haploid cells
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DNA replication results in 2 DNA molecules, each with
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1 new strand
1 original strand |
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How many codons are needed to specify three amino acids?
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3
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A mutation that involves one or a few nucleotides is called a(an)
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point mutation
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Biogeochemical cycling ensures that nutrients will be
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circulated throughout the biosphere
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Darwin's concept of evolution was NOT influenced by his
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knowledge about the structure of DNA
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