HS Sample Set 8, Round 1 from NSB
Which class of organic biomolecules is the major component of animal bodies?
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In a biology lab, you are asked to pollinate a plant. In order to perform this task, you must move pollen grains from where they are produced to the part of the flower that receives these grains. What two structures must you utilize in this process? W) Filament and style X) Anther and style Y) Filament and stigma Z) Anther and stigma
W: W) Filament and style
X: X) Anther and style
Y: Y) Filament and stigma
Z: Z) Anther and stigma
Answer: Z) Z) Anther and stigma
A molecular solid contains what type of bonding? W) Metallic X) Electrovalent Y) Covalent Z) Localized
W: W) Metallic
X: X) Electrovalent
Y: Y) Covalent
Z: Z) Localized
Answer: Y) Y) Covalent
Identify all of the following four factors that affect the degree of crystallinity in polymers: 1) structure; 2) stereochemistry; 3) molecular weight; 4) processing conditions.
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If the radius of a right circular cylinder is tripled, by what factor must the height be multiplied in order to keep the volume the same?
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If \(f(x) = 7x + 19\), for what values of \(x\) is \(f(x)\) greater than 33? W) \(x\) is greater than 2 X) \(x\) is less than 2 Y) \(x\) is between 2 and -2 Z) All real numbers
W: W) \(x\) is greater than 2
X: X) \(x\) is less than 2
Y: Y) \(x\) is between 2 and -2
Z: Z) All real numbers
Answer: W) W) \(x\) is greater than 2
In the excitation of an atom by light, what specific particle is responsible for the absorption of the photon?
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What is the power, in watts, dissipated by a circuit that supplies a potential difference of 1.5 volts and has a current of 0.1 amperes?
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The only continent without conditions favorable for the formation of tornadoes is W) South America X) Australia Y) Asia Z) Antarctica
W: W) South America
X: X) Australia
Y: Y) Asia
Z: Z) Antarctica
Answer: Z) Z) Antarctica
Coral polyps extract what compound out of seawater to form hard external skeletons?
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Within the visible spectrum of light, photons with the longest wavelength are associated with what color?
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Identify, by number, the following processes that would result in an increase of potential energy of a system: 1) Energy transfer as work done by a system; 2) Energy transfer as work done on a system; 3) Thermal energy transfer to a system; 4) Thermal energy transfer from a system.
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What form of transport across membranes is mediated by channel proteins and requires no input of energy?
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In which of the following female cervids would you find antlers? W) Reindeer X) Okapi Y) Mule deer Z) Moose
W: W) Reindeer
X: X) Okapi
Y: Y) Mule deer
Z: Z) Moose
Answer: W) W) Reindeer
Which of the following methods of electricity production typically uses no water? W) Solar thermal X) Tidal Y) Geothermal Z) Photovoltaic
W: W) Solar thermal
X: X) Tidal
Y: Y) Geothermal
Z: Z) Photovoltaic
Answer: Z) Z) Photovoltaic
If 100 joules of energy are added to a 5 kilogram substance and its temperature increases by 4 °C, what is its specific heat capacity in J/(kg·°C)?
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Which of the following is the most important feature characterizing the stratosphere? W) Clouds X) Ozone Y) Ions Z) Dust
W: W) Clouds
X: X) Ozone
Y: Y) Ions
Z: Z) Dust
Answer: X) X) Ozone
The deepest known point of the oceans is found in what ocean?
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If a number eight times as large as \(x\) is increased by two, then one fourth of the result equals W) \(2x + \tfrac{1}{2}\) X) \(x + \tfrac{1}{2}\) Y) \(2x + 2\) Z) \(2x + 4\)
W: W) \(2x + \tfrac{1}{2}\)
X: X) \(x + \tfrac{1}{2}\)
Y: Y) \(2x + 2\)
Z: Z) \(2x + 4\)
Answer: W) W) \(2x + \tfrac{1}{2}\)
Subtracting a certain positive number from its square gives 110. Find the number.
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In which of the following habitats would you expect to find the highest productivity AND lowest diversity of species? W) Salt marsh X) Desert Y) Deciduous forest Z) Grassland
W: W) Salt marsh
X: X) Desert
Y: Y) Deciduous forest
Z: Z) Grassland
Answer: W) W) Salt marsh
All of the following pairs of structures are homologous, EXCEPT: W) The wing of a bat and the wing of a bird X) The leg of a human and the leg of a centipede Y) The scales on a bird’s legs and the scales on a lizard Z) The shell of a clam and the shell of a snail
W: W) The wing of a bat and the wing of a bird
X: X) The leg of a human and the leg of a centipede
Y: Y) The scales on a bird’s legs and the scales on a lizard
Z: Z) The shell of a clam and the shell of a snail
Answer: X) X) The leg of a human and the leg of a centipede
Which of the following acids is diprotic? W) Oxalic acid X) Phosphoric acid Y) Nitric acid Z) Hydrochloric acid
W: W) Oxalic acid
X: X) Phosphoric acid
Y: Y) Nitric acid
Z: Z) Hydrochloric acid
Answer: W) W) Oxalic acid
To the nearest power of ten and in meters, what is the diameter of the hydrogen atom?
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What elementary particle is the carrier of the electromagnetic force? W) Electron X) Gluon Y) Photon Z) Neutrino
W: W) Electron
X: X) Gluon
Y: Y) Photon
Z: Z) Neutrino
Answer: Y) Y) Photon
What particle, recently confirmed to exist at the Large Hadron Collider, is postulated by electroweak theory to explain the origin of mass?
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What is the primary reason that volcanic rocks are porous? W) Erosion X) Marine organisms Y) Rapid cooling Z) Gases trapped inside lava
W: W) Erosion
X: X) Marine organisms
Y: Y) Rapid cooling
Z: Z) Gases trapped inside lava
Answer: Z) Z) Gases trapped inside lava
Over 200 million years ago, the continents as we know them existed as one landmass called Pangaea. About 200 million years ago, this landmass divided into two landmasses. What are the names of these two landmasses?
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What specialized plant cells are responsible for the opening and closing of stomatal airways in response to water stress?
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Certain plants cannot convert nitrate to ammonia because they lack the enzyme nitrate reductase. What would you expect for the pH of the environments where these plants are found? W) Basic X) Acidic Y) Neutral Z) Highly basic
W: W) Basic
X: X) Acidic
Y: Y) Neutral
Z: Z) Highly basic
Answer: X) X) Acidic
If the radius of a sphere is doubled, by what percent does the volume increase?
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Four students and two moderators sit at a circular table. How many distinct arrangements are there of these 6 people if the two moderators must sit opposite each other? W) 4 X) 6 Y) 24 Z) 48
W: W) 4
X: X) 6
Y: Y) 24
Z: Z) 48
Answer: Y) Y) 24
What unit of energy is defined as the amount of heat needed to raise the temperature of one pound of water by one degree Fahrenheit?
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How would you classify a bacterium that derives its energy from inorganic sources such as hydrogen sulphide? W) Chemoheterotroph X) Chemoautotroph Y) Photoautotroph Z) Photoheterotroph
W: W) Chemoheterotroph
X: X) Chemoautotroph
Y: Y) Photoautotroph
Z: Z) Photoheterotroph
Answer: X) X) Chemoautotroph
Carbon dioxide, iron(III) ions, and the hydrogen sulfate ion are all acids in what named theory of acids and bases, which states that bases donate electron pairs, and acids accept them?
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Which of the following matches the molecular formula of a cyclic alkane? W) C₅H₁₂ X) C₅H₁₀ Y) C₅H₈ Z) C₅H₅
W: W) C₅H₁₂
X: X) C₅H₁₀
Y: Y) C₅H₈
Z: Z) C₅H₅
Answer: X) X) C₅H₁₀
Which neurotransmitter is most commonly responsible for action potentials at the animal neuromuscular junction?
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Assume that genes A and B are not linked. If an organism is heterozygous for both genes, what is the probability that the organism will produce a gamete with both the dominant A and B alleles? W) ¼ X) ½ Y) 1 Z) 0
W: W) ¼
X: X) ½
Y: Y) 1
Z: Z) 0
Answer: W) W) ¼
Interference patterns in light-based experiments arise due to what reaction of waves to the confinement of their pathways?
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Two particles have initial velocities of 10 m/s and -10 m/s, respectively. If both particles undergo a constant acceleration of 2 m/s² for 2 seconds, what will be the difference in their velocities, in m/s?
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What hazardous material enables compact fluorescent light bulbs to be more efficient while also requiring special disposal methods? W) Tungsten X) Lead Y) Hafnium Z) Mercury
W: W) Tungsten
X: X) Lead
Y: Y) Hafnium
Z: Z) Mercury
Answer: Z) Z) Mercury
What device in a modern car allows the turning engine to recharge the car’s battery while driving?
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Determine all of the prime factors of 111.
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How many faces does a cuboctahedron have? W) 8 X) 14 Y) 24 Z) 48
W: W) 8
X: X) 14
Y: Y) 24
Z: Z) 48
Answer: X) X) 14
What is the name in organic chemistry that is given to hydrocarbons with general formula CₙH₂ₙ₋₂ that possess a triple bond, the simplest of which is acetylene?
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Which of the following nucleotides is not derived from pyrimidine? W) Uracil X) Thymine Y) Guanine Z) Cytosine
W: W) Uracil
X: X) Thymine
Y: Y) Guanine
Z: Z) Cytosine
Answer: Y) Y) Guanine