HS Sample Set 4, Round 12 from NSB
In the cell, this structure is composed of numerous sets of smooth cisternae, forming a structure that looks like a stack of plates. Within the structure, vesicles are used to send molecules to the cellular membrane. What structure is this?
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Kent holds up a potato at dinner and announces to his family that the spud is actually made up of cells with lots of large organelles that contain the carbohydrates stored by the plant. What are these organelles called?
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The lengths of two sides of a triangle are 30 centimeters and 35 centimeters, respectively. Between what values, in centimeters, must the length of the third side lie?
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Factor the following expression completely over the integers: \$\$\displaystyle 16a^4 - 81b^4\$ \$\$
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What metabolic process occurs frequently in the top 100 meters of the world’s oceans and is nearly absent at greater depths?
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Phytoplankton, like other single-celled organisms, are limited in how large they can grow. What geometric relationship describes this limitation?
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A student at your school conducts a survey about hair products. He determines the hair color of 50 of his classmates, and then randomly selects 5 redheads and 5 brunettes to participate in his survey. What type of sampling did he use? W) Simple random X) Stratified random Y) Cluster Z) Systematic
W: W) Simple random
X: X) Stratified random
Y: Y) Cluster
Z: Z) Systematic
Answer: Y) Y) Cluster
What are the first three terms of the Taylor series for \$e^x\$ at 0?
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Which of the following is not a colligative property of solutions? W) Vapor pressure elevation X) Freezing point depression Y) Boiling point elevation Z) Osmotic pressure
W: W) Vapor pressure elevation
X: X) Freezing point depression
Y: Y) Boiling point elevation
Z: Z) Osmotic pressure
Answer: W) W) Vapor pressure elevation
By name or number, which of the following four types of mixtures are generally considered homogeneous? 1) alloy; 2) suspension; 3) emulsion; 4) colloid
Choices:
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What are the three metals that generally comprise ferromagnetic materials?
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How many turns of wire should a solenoid have if you wish the magnetic field inside the solenoid to be 5 times as great as that of a solenoid with 100 turns of wire, if both have the same length and current?
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Which of the following is not a valid water mass defined by a unique temperature and salinity signature? W) Antarctic bottom water X) North Atlantic deep water Y) Antarctic intermediate water Z) Indian Ocean deep water
W: W) Antarctic bottom water
X: X) North Atlantic deep water
Y: Y) Antarctic intermediate water
Z: Z) Indian Ocean deep water
Answer: Z) Z) Indian Ocean deep water
What is the effect of plate tectonics on the width of the Atlantic Ocean?
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Birds and bats belong to which taxonomic phylum?
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What term describes the specific type of hybridization that occurs between two subspecies of the same species, such as the Bengal Tiger and the Siberian Tiger?
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The standard heat of formation of calcium oxide is –635.5 kilojoules per mole. What is the complete, balanced equation for the formation of calcium oxide, including the energy value?
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The reaction 2 H₂O(g) ⇌ 2 H₂(g) + O₂(g) is at equilibrium with [H₂] = 2.0 M, [O₂] = 3.0 M, and [H₂O] = 4.0 M. Calculate the value of Kₑq for this reaction.
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Albumins, globulins and fibrinogen are all examples of: W) Capillary hormones X) Myocardial antigens Y) Plasma proteins Z) White blood cells
W: W) Capillary hormones
X: X) Myocardial antigens
Y: Y) Plasma proteins
Z: Z) White blood cells
Answer: Y) Y) Plasma proteins
Cranial nerves two, three, seven, and ten refer to which cranial nerves, respectively? W) Occulomotor, trochlear, optic and facial X) Optic, occulomotor, facial and vagus Y) Trigeminal, olfactory, trochlear and vagus Z) Olfactory, vagus, facial and optic
W: W) Occulomotor, trochlear, optic and facial
X: X) Optic, occulomotor, facial and vagus
Y: Y) Trigeminal, olfactory, trochlear and vagus
Z: Z) Olfactory, vagus, facial and optic
Answer: X) X) Optic, occulomotor, facial and vagus
What is the acceleration of a falling body in meters per second squared after it reaches terminal velocity?
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An object is dropped from an office window. The amount of air resistance is unknown. After 1 second of falling, which of the following cannot be true? W) The velocity is 1 meter per second X) The velocity is 11 meters per second Y) The acceleration is 0 meters per second squared Z) The acceleration is 5 meters per second squared
W: W) The velocity is 1 meter per second
X: X) The velocity is 11 meters per second
Y: Y) The acceleration is 0 meters per second squared
Z: Z) The acceleration is 5 meters per second squared
Answer: X) X) The velocity is 11 meters per second
Which soil horizon is likely to have the most organic material? W) O X) A Y) C Z) B
W: W) O
X: X) A
Y: Y) C
Z: Z) B
Answer: W) W) O
As recognizable organic matter on top of the ground begins to decompose, what type of soil does it become?
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Express the complex number \$i^8\$ in standard \(a+bi\) form.
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What is the complex conjugate of the product of \(3 + 6i\) and \(-10 - 7i\)?
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Monster Ralph and Monster Hilda get married and hatch Friendly Freddy, their son. Freddy has purple and red striped hair and four eyes: 2 green and 2 gray. Freddy’s hair and eye color are his: W) Phenotype X) Genotype Y) Alleles Z) Genes
W: W) Phenotype
X: X) Genotype
Y: Y) Alleles
Z: Z) Genes
Answer: W) W) Phenotype
Which of the following is true of genetic mutations? W) They are always harmful and usually hurt the organism X) They are always beneficial and frequently help the organism adapt to the environment Y) They are not natural and should not happen unless something goes wrong Z) They can be harmful, helpful, or have no effect on the organism
W: W) They are always harmful and usually hurt the organism
X: X) They are always beneficial and frequently help the organism adapt to the environment
Y: Y) They are not natural and should not happen unless something goes wrong
Z: Z) They can be harmful, helpful, or have no effect on the organism
Answer: Z) Z) They can be harmful, helpful, or have no effect on the organism
What do we call the ability of a single molecule to act both as a base and an acid?
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Of which of the following acid-base titrations would the pH be less than 7 at the equivalence point? W) Strong base, weak acid X) Strong base, strong acid Y) Weak base, weak acid Z) Strong acid, weak base
W: W) Strong base, weak acid
X: X) Strong base, strong acid
Y: Y) Weak base, weak acid
Z: Z) Strong acid, weak base
Answer: Z) Z) Strong acid, weak base
In an alternating electric current, what is the term most commonly used to describe the tendency of charged particles to travel along the surface of their conductor?
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A transformer is often used in electric circuits to alter what quantity?
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A solution of barium hydroxide is neutralized with a phosphoric acid solution. Identify the molecular forms of the two products that are produced in this reaction.
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The strength of the dispersion forces between two non-polar molecules increases with: W) The number of hydrogen atoms in the molecule X) The number of electrons in the molecule Y) The magnitude of the largest electronegativity of the atoms involved Z) The magnitude of the difference in electronegativity between the atoms
W: W) The number of hydrogen atoms in the molecule
X: X) The number of electrons in the molecule
Y: Y) The magnitude of the largest electronegativity of the atoms involved
Z: Z) The magnitude of the difference in electronegativity between the atoms
Answer: X) X) The number of electrons in the molecule
What is the slope of a vector in standard position with an angle of 45° below the positive x-axis?
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Solve the following equation for x: \$\$\displaystyle x^2 - 34x + 225 = 0\$ \$\$
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Which law of thermodynamics could be stated as: energy tends to distribute itself among the greatest number of particles possible?
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When the same amount of energy is applied to 1-gram portions of water, ethanol, copper and iron, for which one does the temperature increase the least?
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The Haber–Bosch process revolutionized agriculture by providing a cheap, easy method to make fertilizers of an element essential for plant growth. Which of the following is this essential element? W) Iron X) Potassium Y) Phosphorus Z) Nitrogen
W: W) Iron
X: X) Potassium
Y: Y) Phosphorus
Z: Z) Nitrogen
Answer: Z) Z) Nitrogen
What is the term that describes the increase in primary production of an aquatic ecosystem following enrichment with chemical nutrients?
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What term describes momentum transfer from a photon to a physical object?
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Nuclear reactions, such as those that occur in power-generating reactors, are said to be critical when: W) They are able to sustain their level of activity without an external neutron source X) They have been shut down by the introduction of neutron poisons such as boron Y) They are increasing in power at a rate faster than expected Z) They are producing more thorium than uranium
W: W) They are able to sustain their level of activity without an external neutron source
X: X) They have been shut down by the introduction of neutron poisons such as boron
Y: Y) They are increasing in power at a rate faster than expected
Z: Z) They are producing more thorium than uranium
Answer: W) W) They are able to sustain their level of activity without an external neutron source
Wind can be harnessed to generate electricity via turbines. Which of the following is the greatest challenge to widespread use of wind for electricity? W) Wind turbines are huge, expensive, and not particularly aesthetic X) Wind has major negative ecological and environmental effects Y) Suitable locations for wind farms with sufficiently constant and fast winds are limited Z) Wind farms lead to significant loss of agricultural lands
W: W) Wind turbines are huge, expensive, and not particularly aesthetic
X: X) Wind has major negative ecological and environmental effects
Y: Y) Suitable locations for wind farms with sufficiently constant and fast winds are limited
Z: Z) Wind farms lead to significant loss of agricultural lands
Answer: Y) Y) Suitable locations for wind farms with sufficiently constant and fast winds are limited
Identical wind turbines are put in four locations: sea level, 5,000 feet, 10,000 feet, and 14,000 feet. Assuming the same wind speed, which turbine will produce the most energy?
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Which of the following intervals contains both solutions of \(x^2 - 3x = 0\)? W) \(0 < x < 2\) X) \(0 < x < 4\) Y) \(0 \le x < 4\) Z) \(-3 < x \le 2\)
W: W) \(0 < x < 2\)
X: X) \(0 < x < 4\)
Y: Y) \(0 \le x < 4\)
Z: Z) \(-3 < x \le 2\)
Answer: Y) Y) \(0 \le x < 4\)
Find the sum of every odd integer between 5 and 55, inclusive.
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How is geothermal power produced? W) Heat energy is extracted from high-temperature lava after eruptions X) Water from extremely hot springs is circulated in pipes in nearby homes for heating Y) Hot dry volcanic rocks are extracted from deep underground and processed in place at a geothermal plant Z) Mile-or-more-deep wells are drilled into underground reservoirs to tap steam and very hot water that drive turbines
W: W) Heat energy is extracted from high-temperature lava after eruptions
X: X) Water from extremely hot springs is circulated in pipes in nearby homes for heating
Y: Y) Hot dry volcanic rocks are extracted from deep underground and processed in place at a geothermal plant
Z: Z) Mile-or-more-deep wells are drilled into underground reservoirs to tap steam and very hot water that drive turbines
Answer: Z) Z) Mile-or-more-deep wells are drilled into underground reservoirs to tap steam and very hot water that drive turbines
In order to replenish the supply of steam at the geothermal plant called The Geysers, which of the following does an underground pipeline deliver? W) Wastewater X) River water Y) Ocean water Z) Rain water
W: W) Wastewater
X: X) River water
Y: Y) Ocean water
Z: Z) Rain water
Answer: W) W) Wastewater
Which type of rock is most likely to be drilled for oil? W) Granite X) Limestone Y) Sandstone Z) Basalt
W: W) Granite
X: X) Limestone
Y: Y) Sandstone
Z: Z) Basalt
Answer: Y) Y) Sandstone
Which of the following types of rock is likely to cap a layer of rock rich in oil? W) Sandstone X) Shale Y) Slate Z) Granite
W: W) Sandstone
X: X) Shale
Y: Y) Slate
Z: Z) Granite
Answer: X) X) Shale