HS Sample Set 13, Round 6 from NSB
What protein in the replisome is responsible for unwinding the DNA double helix?
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Scientists at SLAC National Accelerator Lab are analyzing data from the Fermi space telescope that performs astronomy in what part of the electromagnetic spectrum?
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What is the name for slow and gradual displacement of rock layers that occurs without the accumulation of significant strain? W) Fault rupture X) Fault break Y) Fault creep Z) Fault walk
W: W) Fault rupture
X: X) Fault break
Y: Y) Fault creep
Z: Z) Fault walk
Answer: Y) Y) Fault creep
Identify all of the following three physical properties that are exhibited by both gypsum and halite: 1) Glassy or vitreous luster; 2) White streak; 3) Three cleavage planes at right angles to one another.
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What is the distance between the points $(-1,4)$ and $(-10,6)$?
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A triangle with integer side lengths has its longest side that is 4 times as long as a second side, and the third side has length 30. What is the greatest possible perimeter of the triangle?
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A sphygmomanometer is a medical device that measures what vital sign?
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In mRNA synthesis, what enzyme reads the DNA and synthesizes the strand of RNA?
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Which of the following is closest to the percent by mass of chloroform that is carbon? W) 10 X) 16 Y) 20 Z) 25
W: W) 10
X: X) 16
Y: Y) 20
Z: Z) 25
Answer: W) W) 10
A buffered aqueous system contains 0.02 M ammonia and 0.2 M ammonium. Which of the following is closest to the pH of this system? W) 8.3 X) 9.3 Y) 10.3 Z) 12.3
W: W) 8.3
X: X) 9.3
Y: Y) 10.3
Z: Z) 12.3
Answer: W) W) 8.3
In meters, how far does a 10-kilogram mass that is dropped from rest travel in 10 seconds?
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A positively charged particle is traveling in the positive direction along the line $y = x$ in the presence of a constant $B$ field pointing in the positive $x$ direction. In what direction is the Lorentz force on the particle pointing?
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Researchers at Oak Ridge National Lab use pulsed laser light to induce thermal stress. This enables them to study the behavior of what type of excitation that plays an important role in many of the physical properties of solids? W) Photon X) Phonon Y) Neutron Z) X-ray
W: W) Photon
X: X) Phonon
Y: Y) Neutron
Z: Z) X-ray
Answer: X) X) Phonon
Researchers at Lawrence Berkeley National Lab are revisiting the BaBar collaboration to look for data pertaining to the material that is thought to compose 85 % of the mass in the universe. What is the term for this material?
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What kind of trajectory will a comet follow if it has the minimum amount of energy needed to escape its star? W) Circular X) Elliptical Y) Parabolic Z) Hyperbolic
W: W) Circular
X: X) Elliptical
Y: Y) Parabolic
Z: Z) Hyperbolic
Answer: Y) Y) Parabolic
In what layer of the Earth’s atmosphere do auroras primarily occur?
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What is the chemical formula of ethylene, the simplest alkene?
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What is the maximum number of stereoisomers possible for a molecule that contains 6 stereocenters?
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Dinoflagellates have been identified as one of the main sources of what deadly marine phenomenon?
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Order the following four sections of the spine from the most superior to the most inferior: 1) Lumbar; 2) Cervical; 3) Sacral; 4) Thoracic.
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Which of the following is equivalent to $$\sin 47^\circ\cos 11^\circ - \cos 47^\circ\sin 11^\circ$$? W) $\sin 36^\circ$ X) $\cos 36^\circ$ Y) $\sin 58^\circ$ Z) $\cos 58^\circ$
W: W) $\sin 36^\circ$
X: X) $\cos 36^\circ$
Y: Y) $\sin 58^\circ$
Z: Z) $\cos 58^\circ$
Answer: W) W) $\sin 36^\circ$
What is the remainder when $$2x^4 + 3x^3 - 7x - 3$$ is divided by $$x + 3$$?
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Winds flowing from high to low pressures on the Earth appear to be deflected to the right in the Northern Hemisphere because of what effect?
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How much elastic energy, in joules, is stored in a spring that is displaced 10 cm from the equilibrium point, if its natural frequency of oscillation is 10 rad/s and the mass on its end is 1 kg?
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Scientists at Lawrence Livermore National Lab have devised an improved method for hydrogen production from water by using cheap transition-metal dichalcogenides. What is the name of this process for hydrogen production that involves splitting water into its components?
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Scientists at Princeton Plasma Physics Lab are building the world’s largest stellarator, which is used to confine what phase of matter?
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Which of the following minerals is not typically found in granite? W) Olivine X) Plagioclase Y) Quartz Z) Hornblende
W: W) Olivine
X: X) Plagioclase
Y: Y) Quartz
Z: Z) Hornblende
Answer: W) W) Olivine
Arrange the following three colors of light in order of increasing depth of penetration in average seawater: 1) Violet; 2) Red; 3) Yellow.
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If silicon is doped with boron, it becomes what type of semiconductor?
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A rocket propels itself with 50 N of force directed completely horizontally. If its net acceleration is directed 30° downward from the horizontal, then to the nearest kilogram, what is the mass of the rocket?
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What type of RNA carries amino acids to the ribosomes?
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Which of the following best describes the reason for the similarity between the wing of a bird and the wing of an insect? W) Convergent evolution X) Divergent evolution Y) Adaptive selection Z) Stabilizing selection
W: W) Convergent evolution
X: X) Divergent evolution
Y: Y) Adaptive selection
Z: Z) Stabilizing selection
Answer: W) W) Convergent evolution
Six is one-third percent of what number?
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A student club sells tickets to a school play. They sell 683 tickets, averaging 14.8 tickets per member (rounded to the nearest tenth). How many members are in the club?
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What is the name of the ionic salt with chemical formula $\mathrm{Fe(IO_4)_3}$?
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Identify all of the following three sulfate salts that are soluble in water: 1) Zinc sulfate; 2) Aluminum sulfate; 3) Iron(III) sulfate.
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Edwin Purcell won the Nobel Prize in Physics for detecting the 21-centimeter spectral line originating from what element?
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What planet in our solar system is the only planet to have an orbital inclination to the ecliptic of greater than 4 degrees?
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What physical quantity is defined as force integrated over a time interval?
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Two capacitors, both with capacitance $C$, are initially charged to 1.5 V and 3.5 V, respectively. If the positive plates are connected to each other and the negative plates are also connected, what is the total voltage across the system?
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In the integers mod 8, what is $7 + 5$?
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If the line tangent to the graph of the differentiable function $f(x)$ at the point $(-3,5)$ passes through the point $(4.5,-4)$, then what is $f'(x)$ when $x=-3$?
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Benzene demonstrates what special type of conjugation due to its 6 pi electrons?
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Which of the electron’s quantum numbers corresponds to the size and energy of the orbital?
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In female mammals, one of the two X chromosomes will be deactivated to form what structure?
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How many different human aminoacyl-tRNA synthetases are there to charge the 45 different tRNA molecules?
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