MS Sample Set 13, Round 9 from NSB
A kilocalorie equals 4,184 of what SI derived unit for energy?
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Identify all of the following three reactions that are exothermic: 1) Burning gasoline; 2) Water vapor condensing; 3) Melting ice.
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What is the log base 5 of 1/25?
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Solve the following equation for x over the negative integers: $$x^4 - 28x^2 + 75 = 0$$
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Scientists at Oak Ridge National Lab are studying how plants respond to extreme weather events, like heat waves. In times of high ambient temperature, plants will close stomata to conserve what?
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Scientists at Idaho National Lab are developing new methods to quickly charge electric vehicles. What type of battery, the most common used in modern electric vehicles, is being charged?
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Which of the following will be the next stage in the evolution of the Sun? W) Supernova X) Red giant Y) Stellar nebula Z) White dwarf
W: W) Supernova
X: X) Red giant
Y: Y) Stellar nebula
Z: Z) White dwarf
Answer: X) X) Red giant
An astronomer is observing a gas cloud and notes several infrared spectral lines. These spectral lines could allow the astronomer to infer what? W) The elemental composition of the cloud X) The chemical bonds present in the cloud Y) The rate of collision of the molecules in the cloud Z) The ionization state of the atoms in the cloud
W: W) The elemental composition of the cloud
X: X) The chemical bonds present in the cloud
Y: Y) The rate of collision of the molecules in the cloud
Z: Z) The ionization state of the atoms in the cloud
Answer: X) X) The chemical bonds present in the cloud
What is the adjective for the type of interference that occurs when two waves cancel each other out?
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Identify all of the following three statements that are true of the astronauts aboard the International Space Station: 1) They are massless; 2) They are in free-fall; 3) They experience Earth's gravity.
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Which of the following animals has been observed to communicate via a dance language, including maneuvers such as the waggle dance? W) Chimpanzee X) Peacock Y) Honeybee Z) Hyena
W: W) Chimpanzee
X: X) Peacock
Y: Y) Honeybee
Z: Z) Hyena
Answer: Y) Y) Honeybee
Which of the following is a major function of the large intestine? W) Mechanically breaking down food X) Chemically breaking down food Y) Absorbing nutrients Z) Absorbing water
W: W) Mechanically breaking down food
X: X) Chemically breaking down food
Y: Y) Absorbing nutrients
Z: Z) Absorbing water
Answer: Z) Z) Absorbing water
How many integers are there from –8 to 5, inclusive?
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What is the area of a rhombus with diagonals of length 24 and 28?
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A stroke is most commonly caused when blood flow is cut off in what organ in the body?
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To what phylum does baker's yeast belong? W) Ascomycota X) Basidiomycota Y) Zygomycota Z) Glomeromycota
W: W) Ascomycota
X: X) Basidiomycota
Y: Y) Zygomycota
Z: Z) Glomeromycota
Answer: W) W) Ascomycota
The Eurasian plate and the Indian plate meet at what type of plate boundary? W) Divergent X) Ocean-ocean convergent Y) Ocean-continent convergent Z) Continent-continent convergent
W: W) Divergent
X: X) Ocean-ocean convergent
Y: Y) Ocean-continent convergent
Z: Z) Continent-continent convergent
Answer: Z) Z) Continent-continent convergent
Identify all of the following three quantities that typically decrease in a stream from headwaters to mouth: 1) Water velocity; 2) Water discharge; 3) Stream channel width.
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What is 40% of 50 plus 40% of 40?
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What is the surface area of a regular square pyramid with slant height 4 whose base has sides of length 7?
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Which of the following is closest to the distance, in meters, between the electron and proton in the neutral hydrogen atom? W) 10⁻¹⁶ X) 10⁻¹³ Y) 10⁻¹⁰ Z) 10⁻⁷
W: W) 10⁻¹⁶
X: X) 10⁻¹³
Y: Y) 10⁻¹⁰
Z: Z) 10⁻⁷
Answer: Y) Y) 10⁻¹⁰
You take an object and reduce its absolute temperature in half. To the nearest degree Celsius, what temperature will the object approach if you repeatedly perform this procedure?
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Scientists at the DOE Ames Research Laboratory have been using advanced TEM to map nanocrystal magnetic fields formed in bacteria in liquids. What mineral is present in these bacteria? W) Gypsum X) Magnetite Y) Calcite Z) Mica
W: W) Gypsum
X: X) Magnetite
Y: Y) Calcite
Z: Z) Mica
Answer: X) X) Magnetite
Researchers at Oak Ridge National Lab are using new methods to study proteins that are soluble in water but cannot be crystallized. All such flexible proteins fall into what larger class of proteins that often have spherical shapes and usually have functional roles within the cell?
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If the height of a square pyramid is multiplied by 9, by what factor must the area of the base be multiplied so that the volume remains constant?
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What is the units digit of 8 to the 2019th power?
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Colonization of plant roots by a fungus can allow increased capture of nutrients from the soil. What is the name for this symbiotic structure?
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In a dicot leaf, what is the layer of tissue responsible for most photosynthesis and carbon dioxide absorption?
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Which of the following pieces of glassware would be LEAST useful for measuring a given volume of liquid? W) Test tube X) Graduated cylinder Y) Erlenmeyer flask Z) Burette
W: W) Test tube
X: X) Graduated cylinder
Y: Y) Erlenmeyer flask
Z: Z) Burette
Answer: W) W) Test tube
An ice cube has a density of 0.92 grams per milliliter and a volume of 400 cubic centimeters. If the ice cube is floating in water, then, in cubic centimeters, what volume of the cube will be sticking out of the water?
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Which of the following locations would you study if you wanted to collect a sample of atmospheric carbon dioxide from one thousand years ago? W) Sea floor sediment X) Glacier ice Y) Sand dunes Z) Ocean water
W: W) Sea floor sediment
X: X) Glacier ice
Y: Y) Sand dunes
Z: Z) Ocean water
Answer: X) X) Glacier ice
Rank the following three sediment grain sizes in order of increasing porosity: 1) Clay; 2) Sand; 3) Gravel.
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Scientists at SLAC National Accelerator Laboratory are using new imaging modalities to study DNA damage. In particular, they are studying damage to DNA caused by what region of the EM spectrum that is divided into A, B, and C ranges? W) Infrared X) Visible Y) Ultraviolet Z) X-ray
W: W) Infrared
X: X) Visible
Y: Y) Ultraviolet
Z: Z) X-ray
Answer: Y) Y) Ultraviolet
Researchers at Pacific Northwest National Lab used new proteomics methods to study blood markers in patients with cirrhosis. Cirrhosis is a disease in which scar tissue is laid down in what human organ?
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During muscular contraction, myosin is cross-linked to what other protein in order to shorten the muscle filament?
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Which of the following groups of animals is able to respire significant amounts of oxygen from their skins? W) Fishes X) Amphibians Y) Reptiles Z) Birds
W: W) Fishes
X: X) Amphibians
Y: Y) Reptiles
Z: Z) Birds
Answer: X) X) Amphibians
What is the x-intercept of the line with equation $$5x - 3y = -30$$?
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If an arithmetic sequence has third term 16 and seventh term 44, what is its 19th term?
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The Cassini division is associated with what planet?
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Which of the following is closest to the temperature, in kelvins, at which hydrogen fusion will commence in a young star? W) 10,000 X) 100,000 Y) 1 million Z) 10 million
W: W) 10,000
X: X) 100,000
Y: Y) 1 million
Z: Z) 10 million
Answer: Z) Z) 10 million
Serum and plasma are derived from what substance in the body?
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Identify all of the following three structures that are part of the digestive tract: 1) Pharynx; 2) Larynx; 3) Esophagus.
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The statement "if two gas samples have the same pressure, temperature, and volume, they contain the same number of particles" is a form of what gas law named for its discoverer?
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In the balanced equation for the reaction of oxygen and iron to produce ferric oxide, what is the coefficient of the iron?
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What is the most common element in emission nebulas?
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Giving your answer to one significant digit, what is the average albedo of the moon?
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