HS Sample Set 11, Round 6 from NSB
Uniform circular motion is achieved by applying force in what direction? W) Toward the center of rotation X) Away from the center of rotation Y) In the direction of motion Z) Against the direction of motion
W: W) Toward the center of rotation
X: X) Away from the center of rotation
Y: Y) In the direction of motion
Z: Z) Against the direction of motion
Answer: W) W) Toward the center of rotation
What radioactive isotope of carbon is prominently used in radiometric dating?
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Which of the following is considered a strong acid? W) Hydrofluoric acid X) Nitric acid Y) Formic acid Z) Nitrous acid
W: W) Hydrofluoric acid
X: X) Nitric acid
Y: Y) Formic acid
Z: Z) Nitrous acid
Answer: X) X) Nitric acid
Which of the following polyprotic acids has only two pKa values? W) Ascorbic acid X) Phosphoric acid Y) Arsenic acid Z) Citric acid
W: W) Ascorbic acid
X: X) Phosphoric acid
Y: Y) Arsenic acid
Z: Z) Citric acid
Answer: W) W) Ascorbic acid
A and B are statements, and B is false. Which of the following is true regarding the statement “B implies A?” W) It is true regardless of the truth value of A X) It is false regardless of the truth value of A Y) It is true only when A is true and false otherwise Z) It is true only when A is false and false otherwise
W: W) It is true regardless of the truth value of A
X: X) It is false regardless of the truth value of A
Y: Y) It is true only when A is true and false otherwise
Z: Z) It is true only when A is false and false otherwise
Answer: W) W) It is true regardless of the truth value of A
The line with equation \(y = 5x + 4\) is reflected across the line \(y = x\). What are the slope and y-intercept of its image, respectively?
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What type of fault created the Loma Prieta earthquake in 1989? W) Normal X) Reverse Y) Strike-slip Z) Thrust
W: W) Normal
X: X) Reverse
Y: Y) Strike-slip
Z: Z) Thrust
Answer: Y) Y) Strike-slip
What is the parent rock of slate?
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Wind, moving water, sunlight, and heat from Earth’s interior are sources of what type of energy? W) Renewable X) Fossil Y) Alternative Z) Reusable
W: W) Renewable
X: X) Fossil
Y: Y) Alternative
Z: Z) Reusable
Answer: W) W) Renewable
Which of the following was not one of the top three carbon-dioxide-emitting countries in 2014? W) India X) China Y) United States Z) Russia
W: W) India
X: X) China
Y: Y) United States
Z: Z) Russia
Answer: Z) Z) Russia
Which chamber in the heart has the highest systolic pressure? W) Right atrium X) Right ventricle Y) Left atrium Z) Left ventricle
W: W) Right atrium
X: X) Right ventricle
Y: Y) Left atrium
Z: Z) Left ventricle
Answer: Z) Z) Left ventricle
List the correct order of a secretory protein pathway from synthesis to secretion: 1) Golgi apparatus; 2) Endoplasmic reticulum; 3) Plasma membrane.
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What type of rock is found in most cave systems? W) Sandstone X) Granite Y) Basalt Z) Limestone
W: W) Sandstone
X: X) Granite
Y: Y) Basalt
Z: Z) Limestone
Answer: Z) Z) Limestone
According to the Richter scale, to the nearest whole number, how many times as much energy does a 5.7 earthquake release as a 4.7 earthquake?
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At the DOE’s Advanced Photon Source, researchers are studying industrial catalysts used in petrochemical processing. Which of the following correctly describes most of these catalysts? W) Organic molecules X) Enzymes Y) Homogeneous inorganic Z) Heterogeneous inorganic
W: W) Organic molecules
X: X) Enzymes
Y: Y) Homogeneous inorganic
Z: Z) Heterogeneous inorganic
Answer: Z) Z) Heterogeneous inorganic
Lawrence Berkeley National Lab scientists have been studying XPG, a protein found to play a role in protecting the body from cancer. Which of the following proteins likely plays a similar role to XPG? W) Phosphofructokinase X) p53 Y) Aldolase Z) Carbonic anhydrase
W: W) Phosphofructokinase
X: X) p53
Y: Y) Aldolase
Z: Z) Carbonic anhydrase
Answer: X) X) p53
A one-to-one function has its graph in the second quadrant. In which quadrant will the graph of its inverse lie?
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If the line tangent to the graph of the differentiable function \(f(x)\) at the point \((-2, 5)\) passes through the point \((3.5, -3)\), what is the value of \(f'(-2)\)?
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What gas, whose methylated derivative is used in rocket fuels, is produced by bubbling ammonia through a sodium hypochlorite solution?
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The isomerization reaction of a particular cis-alkene to its trans-isomer is first order. In terms of liters, moles, and seconds, what are the units for the rate constant of this reaction?
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Grasses provide an example of a root system that is best described as which of the following? W) Monocot tap X) Dicot tap Y) Monocot fibrous Z) Dicot fibrous
W: W) Monocot tap
X: X) Dicot tap
Y: Y) Monocot fibrous
Z: Z) Dicot fibrous
Answer: Y) Y) Monocot fibrous
If a Gram stain were performed on E. coli with safranin as the counterstain, what color would the bacteria appear to be?
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On a standing wave, what term refers to the points at which the amplitude is maximized?
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Suppose the Earth’s radius were decreased by half but its mass remained the same. To one decimal place, by what factor will the surface escape velocity be multiplied?
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While fluorescent lamps have a much higher efficiency than incandescent bulbs, they require special disposal concerns due to their construction involving what heavy metal vapor?
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What are the coolant and the moderator, respectively, in pressurized heavy water reactors?
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What is the repeating unit found in skeletal muscles?
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Chaperonins are involved in which of the following processes? W) Guiding metabolites to cellular compartments X) Ensuring proper protein folding Y) Breaking down ubiquitin-tagged proteins Z) Breaking down disaccharides
W: W) Guiding metabolites to cellular compartments
X: X) Ensuring proper protein folding
Y: Y) Breaking down ubiquitin-tagged proteins
Z: Z) Breaking down disaccharides
Answer: X) X) Ensuring proper protein folding
What is the name for a stream that is similar to a braided stream but the mid-channel bars are much more stable than those found in a braided stream? W) Meandering X) Wandering Y) Anastomosing Z) Sinuous
W: W) Meandering
X: X) Wandering
Y: Y) Anastomosing
Z: Z) Sinuous
Answer: Y) Y) Anastomosing
Which of the following types of olivine has the highest iron content? W) Forsterite X) Fayalite Y) Monticellite Z) Tephroite
W: W) Forsterite
X: X) Fayalite
Y: Y) Monticellite
Z: Z) Tephroite
Answer: X) X) Fayalite
For a given redox reaction, which of the following pairs of thermodynamic statements is NOT possible? W) K-equilibrium greater than 1 and ΔH greater than zero X) E-cell greater than zero and ΔG greater than zero Y) ΔH greater than zero and ΔG greater than zero Z) K-equilibrium greater than 1 and E-cell greater than zero
W: W) K-equilibrium greater than 1 and ΔH greater than zero
X: X) E-cell greater than zero and ΔG greater than zero
Y: Y) ΔH greater than zero and ΔG greater than zero
Z: Z) K-equilibrium greater than 1 and E-cell greater than zero
Answer: X) X) E-cell greater than zero and ΔG greater than zero
How many total nodes exist within the highest energy π molecular orbital for 1,3-butadiene?
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What thermodynamic cycle describes a jet turbine? W) Rankine X) Carnot Y) Brayton Z) Otto
W: W) Rankine
X: X) Carnot
Y: Y) Brayton
Z: Z) Otto
Answer: Y) Y) Brayton
Identify all of the following three statements that are true of the physics of the Big Bang: 1) The Big Bang is consistent with the observations made by Hubble 2) The Big Bang produced mostly oxygen and carbon 3) The leftover energy from the Big Bang is no longer detectable
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What is \(\tfrac{4}{9}\) divided by \(\tfrac{8}{15}\)?
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What are the radius and the coordinates of the center of the circle with equation \(x^2 - 14x + y^2 + 8y + 41 = 0\)?
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Identify all of the following three compounds that can crystallize as network solids: 1) Carbon dioxide 2) Silicon dioxide 3) Silicon carbide
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Rank the following three reactions in terms of increasing ΔH, from most negative to most positive: 1) Combustion of one mole of formaldehyde 2) Combustion of one mole of methanol 3) Combustion of one mole of methane
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What is the term for the quasiparticles present in p-type semiconductors that represent the absence of electrons?
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What is the wavelength, as a fraction of the length of the box, of the third excited state of a one-particle one-dimensional particle in a box?
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What is the general term for the data-gathering technique by which the measurements of several smaller telescopes are superimposed to create a higher-resolution and more detailed image?
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Fossils of Mesosaurus were instrumental in providing evidence for what theory?
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Name one of the linear factors of \(x^2 + 14x - 72\).
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What is the sum of the distinct prime factors of 348?
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In the sarcomere, what protein is found as filaments twisted into a double helix?
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Identify all of the following three types of muscle that can contract strongly even when stretched: 1) Cardiac 2) Skeletal 3) Smooth
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