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29 Cards in this Set

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