MS Sample Set 12, Round 9 from NSB
What property of a fluid would enable a metal wire to float on the surface? W) Viscosity X) Temperature Y) Surface tension Z) Compressibility
W: W) Viscosity
X: X) Temperature
Y: Y) Surface tension
Z: Z) Compressibility
Answer: Y) Y) Surface tension
Identify all of the following three forces that can be considered contact forces: 1) Magnetism; 2) Tension; 3) Gravity.
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For a group of 80 Science Bowl players, 65 percent were eighth-graders, 20 percent were seventh-graders, and the rest were sixth-graders. How many players in the group were sixth-graders?
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According to Descartes' Rule of Signs, which of the following statements best characterizes the possible real roots of the equation $$x^3 + x^2 - x - 1 = 0$$? W) One positive root, zero negative roots X) One positive root, two negative roots Y) One positive root, two or zero negative roots Z) Two positive roots, one negative root
W: W) One positive root, zero negative roots
X: X) One positive root, two negative roots
Y: Y) One positive root, two or zero negative roots
Z: Z) Two positive roots, one negative root
Answer: Y) Y) One positive root, two or zero negative roots
Scientists at Oak Ridge National Lab determined the crystal structure of a protease responsible for cleaving Gag and Pol proteins. This protease is important in the life cycle of which clinically-important retrovirus? W) Human Immunodeficiency Virus X) Influenza Y) Smallpox Z) Chicken pox
W: W) Human Immunodeficiency Virus
X: X) Influenza
Y: Y) Smallpox
Z: Z) Chicken pox
Answer: W) W) Human Immunodeficiency Virus
DOE scientists recently imaged the supercoiling of DNA in a bacterial model system to study its relationship with pathogenicity. What is the genus of the bacteria they studied?
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Which of the following processes is responsible for generating most of the heat that powers Io’s volcanism? W) Radioactive decay X) Tidal forces Y) Solar insolation Z) Jupiter’s magnetic field
W: W) Radioactive decay
X: X) Tidal forces
Y: Y) Solar insolation
Z: Z) Jupiter’s magnetic field
Answer: X) X) Tidal forces
Rank the following three star colors in increasing order of temperature: 1) Red; 2) Blue; 3) Yellow.
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In sodium chloride, the sodium ion has the same electron configuration as what neutral element?
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What is the term for a compound that is composed of only carbon and hydrogen and contains one or more double bonds between carbon atoms?
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What organ system in the human body is responsible for removing carbon dioxide from the body?
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An individual with the monosomy Turner syndrome has what karyotype? W) X-O X) Y-O Y) XXX Z) XXY
W: W) X-O
X: X) Y-O
Y: Y) XXX
Z: Z) XXY
Answer: W) W) X-O
Which of the following is closest to the number of cubic inches in a cubic yard? W) 400 X) 4,000 Y) 40,000 Z) 400,000
W: W) 400
X: X) 4,000
Y: Y) 40,000
Z: Z) 400,000
Answer: Y) Y) 40,000
If the ratio of the volumes of two similar circular cones is 36 to 27, what is the ratio of the diameter of the larger cone to that of the smaller cone?
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Two plants with yellow peas are heterozygous for that dominant trait. What percentage of their offspring will have yellow peas?
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A new organism is discovered. Dissection of the creature reveals a digestive tract, segmented body, no vertebrae, and only bilateral symmetry. What phylum should it be categorized under? W) Cnidaria X) Platyhelminthes Y) Nematoda Z) Annelida
W: W) Cnidaria
X: X) Platyhelminthes
Y: Y) Nematoda
Z: Z) Annelida
Answer: Z) Z) Annelida
The Alpine Fault runs the length of New Zealand’s South Island, marking a boundary between the Pacific Plate and the Indo-Australian Plate. As the two plates slide past each other, the Pacific Plate is being pushed up higher than the Indo-Australian Plate. What type of boundary is the Alpine Fault?
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Rank the following three water reservoirs in increasing order of the percentage of the world’s water they contain: 1) Lakes; 2) Ice; 3) Groundwater.
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To the nearest whole number, what is 42.16 plus 96.883?
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A hexagon has two right angles, and the other four angles are congruent. What is the degree measure of each of these other four angles?
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What is the term for an acid that possesses three acidic hydrogens, such as phosphoric acid?
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What is the oxidation number of iron in ferric oxide?
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Scientists at Oak Ridge National Lab are developing the next generation of lithium-ion batteries. Identify all of the following three statements that are TRUE of these batteries: 1) They are rechargeable; 2) They use intercalation reactions; 3) The lithium ions are the charge carriers.
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Identify all of the following three types of batteries that are rechargeable: 1) Alkaline; 2) Nickel-cadmium; 3) Nickel-hydride.
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The line with equation $$y = 3x + 7$$ contains points in each quadrant except which one?
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Eight marbles marked one through eight are placed into a bag, and you draw two of them at random. What is the probability that the two marbles you draw are marked 4 and 2?
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What genetic disorder is caused by trisomy of the 21st chromosome?
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Hemophilia is an X-chromosome-linked recessive trait. Which of the following percentages is the probability that the daughter of a male with the disease and a female carrier is a hemophiliac? W) 0 X) 25 Y) 50 Z) 100
W: W) 0
X: X) 25
Y: Y) 50
Z: Z) 100
Answer: Y) Y) 50
Which of the following processes can best be used to separate a mixture of miscible liquids? W) Distillation X) Filtration Y) Sedimentation Z) Centrifugation
W: W) Distillation
X: X) Filtration
Y: Y) Sedimentation
Z: Z) Centrifugation
Answer: W) W) Distillation
Identify all of the following three statements that are true: 1) Water molecules are dipoles; 2) All bonds involve the sharing of electrons between two atoms; 3) In conducting metals, certain electrons can move freely throughout the metal.
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What force is primarily responsible for the formation of protostars from nebular clouds?
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Order the following three stages of a “shooting star” from before it enters the Earth’s atmosphere to when it hits the Earth’s surface: 1) Meteor; 2) Meteorite; 3) Meteoroid.
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Researchers at Argonne National Lab are developing spintronic materials that rely on manipulating the spin of what subatomic particles?
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In a Leclanché zinc-carbon battery, an oxide of what transition metal reacts at the positive electrode?
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What is the term for a cross in genetics that is used to track the inheritance of only a single characteristic?
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Identify all of the following four organelles that are thought to have evolved from endosymbionts: 1) Mitochondrion; 2) Chloroplast; 3) Nucleus; 4) Lysosome.
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How many real solutions are there to the equation $$x^2 - 22x + 121 = 0$$?
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How many prime numbers are between 75 and 100?
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Which of the following numbers of kilometers is closest to the altitude at which Earth’s atmospheric pressure is half that of the surface? W) 3 X) 5.5 Y) 7.5 Z) 10.5
W: W) 3
X: X) 5.5
Y: Y) 7.5
Z: Z) 10.5
Answer: X) X) 5.5
The Saffir–Simpson scale is used to classify what?
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What molecule is responsible for carrying oxygen in the mammalian red blood cell?
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Crossing over during prophase I forms what point of contact between homologous chromosomes?
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J.J. Thomson was an English scientist who studied cathode ray tubes. In his experiments, the so-called cathode rays were made up of what subatomic particle?
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To the nearest whole number, what temperature in degrees Fahrenheit is equivalent to 103 °C?
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Which of the following is not one of the Big-Five mass extinctions? W) End Permian X) Late Devonian Y) Mid Carboniferous Z) Ordovician-Silurian
W: W) End Permian
X: X) Late Devonian
Y: Y) Mid Carboniferous
Z: Z) Ordovician-Silurian
Answer: Y) Y) Mid Carboniferous
Identify all of the following three rocks that are sedimentary: 1) Coquina; 2) Dolostone; 3) Breccia.
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