MS Sample Set 7, Round 3 from NSB
What is the x-intercept of the graph with equation y = 7?
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If a line passes through point (1, 6) and has a slope of 4, which of the following is the equation of the line? W) x = 2y + 4 X) x = 4y + 2 Y) y = 4x + 2 Z) y = 2x + 4
W: W) x = 2y + 4
X: X) x = 4y + 2
Y: Y) y = 4x + 2
Z: Z) y = 2x + 4
Answer: Y) Y) y = 4x + 2
Which of the following does NOT correctly describe force in the context of a moving object? W) It is a vector X) It has a magnitude Y) It is dependent on mass Z) It is independent of acceleration
W: W) It is a vector
X: X) It has a magnitude
Y: Y) It is dependent on mass
Z: Z) It is independent of acceleration
Answer: Z) Z) It is independent of acceleration
Identify the following three elements as a metal, metalloid and nonmetal, respectively: silicon, sodium, neon.
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All chordates possess which of the following? W) A notochord X) A spinal cord Y) Lungs Z) A four-chambered heart
W: W) A notochord
X: X) A spinal cord
Y: Y) Lungs
Z: Z) A four-chambered heart
Answer: W) W) A notochord
Identify all of the following four parties who know which subjects are in which treatment groups in a double blind study involving human subjects: 1) the subjects; 2) the investigators who carry out the study; 3) the investigators who plan the study; 4) the statisticians who analyze the data.
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Most gemstones belong to what class of minerals? W) Phosphates X) Oxides Y) Carbonates Z) Silicates
W: W) Phosphates
X: X) Oxides
Y: Y) Carbonates
Z: Z) Silicates
Answer: Z) Z) Silicates
A supraglacial lake would be located at which of the following locations?
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What is the term for a heritable change in the character of a gene or a change in the sequence of base pairs in a DNA molecule?
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Which of the following will most likely reduce genetic variation in a population? W) Disruptive selection X) Directional selection Y) Stabilizing selection Z) Genetic drift
W: W) Disruptive selection
X: X) Directional selection
Y: Y) Stabilizing selection
Z: Z) Genetic drift
Answer: Y) Y) Stabilizing selection
A proton exchange membrane fuel cell exchanges which of the following ions? W) OH⁻ X) Cl⁻ Y) H⁺ Z) Al
W: W) OH⁻
X: X) Cl⁻
Y: Y) H⁺
Z: Z) Al
Answer: Y) Y) H⁺
What two states together account for approximately one fifth of the nation’s nuclear power generation?
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Providing your answer as a mixed number, what is $$1\frac{3}{4} + 2\frac{7}{8}$$?
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For what value of k does $$kx + 7y = 10$$ have a slope of 3?
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Which of the following elements would be expected to have the most polar bond when bonded with oxygen? W) Sulfur X) Fluorine Y) Hydrogen Z) Nitrogen
W: W) Sulfur
X: X) Fluorine
Y: Y) Hydrogen
Z: Z) Nitrogen
Answer: Y) Y) Hydrogen
Identify all of the following four choices that are electrically neutral: 1) gamma rays; 2) positrons; 3) alpha particles; 4) beta particles.
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Sharks and salmon have evolved different adaptations. Which of the following statements is true? W) Sharks lay eggs while salmon give birth to live young X) Sharks have cartilaginous skeletons while salmon have bony skeletons Y) Salmon possess gills while sharks do not Z) Sharks possess opercula while salmon do not
W: W) Sharks lay eggs while salmon give birth to live young
X: X) Sharks have cartilaginous skeletons while salmon have bony skeletons
Y: Y) Salmon possess gills while sharks do not
Z: Z) Sharks possess opercula while salmon do not
Answer: X) X) Sharks have cartilaginous skeletons while salmon have bony skeletons
What inner planet of our solar system is known for its clouds of sulfuric acid and sulfur dioxide?
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Which of the following rocks has both high porosity and high permeability? W) Claystone X) Sandstone Y) Granite Z) Marble
W: W) Claystone
X: X) Sandstone
Y: Y) Granite
Z: Z) Marble
Answer: X) X) Sandstone
As a result of pressure, the melting point of glacial ice is known to decrease 0.7 °C per kilometer of depth. At what depth will a glacier begin to melt if it has a constant temperature of -2 °C? (to nearest tenth of a kilometer)
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Angiosperms are plants that do what? W) Reproduce exclusively by spores X) Have flowers and fruits Y) Parasitize other plants Z) Produce seeds, but not flowers
W: W) Reproduce exclusively by spores
X: X) Have flowers and fruits
Y: Y) Parasitize other plants
Z: Z) Produce seeds, but not flowers
Answer: X) X) Have flowers and fruits
A student electrophoreses a sample of restriction-digested DNA. Upon staining, four distinct bands appear on the gel: A – 1500 base pairs; B – 2000 base pairs; C – 1000 base pairs; D – 3000 base pairs. Based on the size of the restriction fragments, in what order do the bands appear on the gel, starting from the band closest to the well?
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If 6 amperes of current flow through a 5 Ω resistor, what is the voltage across the resistor?
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Approximately how many days could a single person be fed from the corn needed to produce enough 100% ethanol to fuel a single SUV? W) 34 X) 234 Y) 365 Z) 1089
W: W) 34
X: X) 234
Y: Y) 365
Z: Z) 1089
Answer: Y) Y) 365
In the following proportion, solve for x over the real numbers: $$(x - 1) / 8 = 6(x + 1).$$
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Dividing a certain number by 2 yields the same result as subtracting 15 from 3 times the number. Find the number.
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When a substance contains more of a dissolved compound than can be dissolved by the solvent under standard conditions, it is referred to as which of the following? W) Saturated X) Dissaturated Y) Over saturated Z) Super saturated
W: W) Saturated
X: X) Dissaturated
Y: Y) Over saturated
Z: Z) Super saturated
Answer: Z) Z) Super saturated
In the balanced combustion reaction of one mole of propane with excess oxygen to form water and carbon dioxide, identify the number of moles, respectively, of carbon dioxide and water formed.
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Lightning can NOT form between which of the following media? W) Cloud and air X) Air and ground Y) Cloud and cloud Z) Ground and cloud
W: W) Cloud and air
X: X) Air and ground
Y: Y) Cloud and cloud
Z: Z) Ground and cloud
Answer: X) X) Air and ground
Most organisms need nitrogen to create important compounds like amino acids and proteins, but cannot directly access nitrogen from the atmosphere. What is the name of the process that makes atmospheric nitrogen accessible to individuals in the food web?
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Which of the following types of volcano usually covers the most acreage on the surface of the Earth? W) Lava dome X) Cinder cone Y) Stratovolcano Z) Shield volcano
W: W) Lava dome
X: X) Cinder cone
Y: Y) Stratovolcano
Z: Z) Shield volcano
Answer: Z) Z) Shield volcano
Black smokers are most likely to be found in association with what type of undersea geological site? W) Subduction zone X) Slip-strike fault Y) Methane seep Z) Spreading center
W: W) Subduction zone
X: X) Slip-strike fault
Y: Y) Methane seep
Z: Z) Spreading center
Answer: Z) Z) Spreading center
What is the nitrogenous base found in RNA that is NOT present in DNA?
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What is the structural polysaccharide that forms the exoskeleton of arthropods and is the building material in the cell walls of some fungi?
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Many fish possess a swim bladder filled with air for what purpose? W) Buoyancy X) Circulation Y) Digestion Z) Respiration
W: W) Buoyancy
X: X) Circulation
Y: Y) Digestion
Z: Z) Respiration
Answer: W) W) Buoyancy
Which of the following pairs of countries is NOT located on the same tectonic plate? W) Great Britain and Russia X) China and India Y) Greenland and Mexico Z) Malaysia and Norway
W: W) Great Britain and Russia
X: X) China and India
Y: Y) Greenland and Mexico
Z: Z) Malaysia and Norway
Answer: X) X) China and India
What is the arithmetic mean of the numbers: -20, -12, 7, 9?
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The measures of the angles of a triangle are in the ratio of 2:3:5. What is the measure in degrees of the triangle’s largest angle?
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A student is standing in an elevator that is moving. Taking upward to be positive and downward to be negative, which of the following could NOT be true? W) The student has a velocity equal to zero and a positive acceleration vector X) The student has an acceleration equal to zero and a positive velocity vector Y) The student has a positive acceleration vector and a negative velocity vector Z) The student has a negative acceleration vector and is slowing down
W: W) The student has a velocity equal to zero and a positive acceleration vector
X: X) The student has an acceleration equal to zero and a positive velocity vector
Y: Y) The student has a positive acceleration vector and a negative velocity vector
Z: Z) The student has a negative acceleration vector and is slowing down
Answer: W) W) The student has a velocity equal to zero and a positive acceleration vector
Electromagnetic radiation that has a wavelength of 10⁻⁴ meters is in which region of the spectrum?
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Which of the following statements does NOT describe a disadvantage associated with exoskeletons? W) Increased risk of desiccation X) Restricted sensory input Y) Restricted movement Z) Limited body size
W: W) Increased risk of desiccation
X: X) Restricted sensory input
Y: Y) Restricted movement
Z: Z) Limited body size
Answer: W) W) Increased risk of desiccation
Many scientists believe viruses represent the boundary between the living and nonliving. They exhibit both similarities and differences when compared to living organisms. Identify all of the following four areas in which viruses are different from living organisms: 1) presence of genetic material; 2) reproduction; 3) evolution by natural selection; 4) metabolism.
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Based on Iceland’s location, what type of lava is most commonly seen erupting from Iceland’s volcanic vents?
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Place the following four geological time divisions in the correct order, from longest to shortest: 1) era; 2) epoch; 3) period; 4) eon.
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Shingles is a localized skin rash that is often very painful and is caused by reactivation of the virus that previously caused what common childhood disease in the host?
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There are three primary locomotor structures that aid in movement of single-celled organisms. One type of structure is flagella. Name one of the two other types.
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Nuclear reactors rely on a nuclear chain reaction to cleave atoms and release energy at a controlled rate. What subatomic particle drives this chain reaction?
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What is attributed with causing the universe to expand at an accelerating rate?
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Several species of birds feed on ectoparasites that they clean off of large mammals. Specifically, this behavior is what kind of interaction?
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Which of the following is an example of chemosynthesis? W) A Venus flytrap breaking down the phosphates in a fly X) A plant obtaining fixated nitrogen from bacteria-rich soil Y) Prokaryotes obtaining energy from sulfur compounds from the sea vents on the ocean floor Z) A human being breaking down vitamins and minerals for metabolic digestion
W: W) A Venus flytrap breaking down the phosphates in a fly
X: X) A plant obtaining fixated nitrogen from bacteria-rich soil
Y: Y) Prokaryotes obtaining energy from sulfur compounds from the sea vents on the ocean floor
Z: Z) A human being breaking down vitamins and minerals for metabolic digestion
Answer: Y) Y) Prokaryotes obtaining energy from sulfur compounds from the sea vents on the ocean floor