MS Sample Set 6, Round 17 from NSB
A scientist is interested in inhibiting antibody production in humans. What cell should be targeted to ensure absolutely no antibody production?
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From which embryonic germ layer is the nervous system formed?
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Approximately how many years ago was the last magnetic pole reversal? W) 1200 X) 780,000 Y) 2.5 million Z) 680 million
W: W) 1200
X: X) 780,000
Y: Y) 2.5 million
Z: Z) 680 million
Answer: X) X) 780,000
Which of the following igneous rock textures would NOT be considered an intrusive texture? W) Phaneritic X) Pegmatitic Y) Aplitic Z) Aphanitic
W: W) Phaneritic
X: X) Pegmatitic
Y: Y) Aplitic
Z: Z) Aphanitic
Answer: Z) Z) Aphanitic
Which of the following electrolyte solutions would provide the best conditions for the electrolysis of water? W) Sodium sulfate X) Sodium chloride Y) Hydrochloric acid Z) Potassium chloride
W: W) Sodium sulfate
X: X) Sodium chloride
Y: Y) Hydrochloric acid
Z: Z) Potassium chloride
Answer: W) W) Sodium sulfate
Which of the following statements is NOT true of buckminsterfullerene? W) It resembles a geodesic dome X) It can be found in soot Y) It exhibits wave-particle duality Z) It is an insulator
W: W) It resembles a geodesic dome
X: X) It can be found in soot
Y: Y) It exhibits wave-particle duality
Z: Z) It is an insulator
Answer: Z) Z) It is an insulator
What is the eccentricity of the figure with equation \(x = 2y^2\)?
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Quadrilateral ABCD has the following properties: angles D and BCA are right angles, \(CD=7\) m, \(AD=6\) m, and \(AB=13\) m. Expressed in simplest form, what is the length of \(BC\), in meters?
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What is a standard tool for measuring turbidity with readings that may vary depending on cloud coverage or wave action?
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Name all of the following five organisms that are sessile at some stage of their life cycle: 1) coral; 2) phytoplankton; 3) tuna; 4) lamprey; 5) jellyfish.
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Why is a sinusoidal waveform used to transmit power to homes when the shape does not maximize efficiency in the circuit? W) The shape is distorted when capacitors and inductors are present in a circuit X) The shape is preserved when capacitors and inductors are present in a circuit Y) The need for capacitors and inductors is eliminated, making the power factor very close to 1 Z) The shape guarantees that no power outages will occur
W: W) The shape is distorted when capacitors and inductors are present in a circuit
X: X) The shape is preserved when capacitors and inductors are present in a circuit
Y: Y) The need for capacitors and inductors is eliminated, making the power factor very close to 1
Z: Z) The shape guarantees that no power outages will occur
Answer: X) X) The shape is preserved when capacitors and inductors are present in a circuit
Which of the following compounds has the highest boiling point? W) Potassium bromide X) Magnesium oxide Y) Sodium iodide Z) Sodium chloride
W: W) Potassium bromide
X: X) Magnesium oxide
Y: Y) Sodium iodide
Z: Z) Sodium chloride
Answer: X) X) Magnesium oxide
What enzyme in the small intestine hydrolyzes fat molecules?
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Sam has parasitic worms in his intestines. Which type of white blood cell discharges destructive enzymes to combat worms?
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Which of the following is a type of dune that forms at right angles to the wind when there is abundant sand, a lack of vegetation, and a constant wind direction? W) Barchan X) Transverse Y) Parabolic Z) Star
W: W) Barchan
X: X) Transverse
Y: Y) Parabolic
Z: Z) Star
Answer: W) W) Barchan
Suppose you find a rock with angular clasts. Which of the following is the correct classification? W) Breccia X) Conglomerate Y) Slate Z) Basalt
W: W) Breccia
X: X) Conglomerate
Y: Y) Slate
Z: Z) Basalt
Answer: W) W) Breccia
What kind of organic compound is formed by the reaction of an organic acid and an alcohol?
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Disregarding the effects of convection and evaporation, 100 kg of which of the following substances in the same container will take longer to cool to room temperature if each starts at 97 °C? W) Water X) Ethanol Y) Concrete Z) Sand
W: W) Water
X: X) Ethanol
Y: Y) Concrete
Z: Z) Sand
Answer: W) W) Water
The average measure of the interior angles of a convex polygon is 108°. How many sides does this polygon have?
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What is your overall savings in cents per ounce if you buy a 1 lb 2 oz box of detergent at \$9.72 instead of a 9 oz box at \$6.75?
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How many carbon atoms are there in glyceraldehyde-3-phosphate?
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What type of bond is responsible for maintaining the secondary structure of a protein?
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The connection scheme used to connect a renewable energy source to the utility grid is usually called which of the following? W) Distributed power X) Distributed generation Y) Lumped generation Z) Grid tie power
W: W) Distributed power
X: X) Distributed generation
Y: Y) Lumped generation
Z: Z) Grid tie power
Answer: X) X) Distributed generation
Wind turbines use which of the following principles of fluid mechanics when producing energy? W) Law of continuity X) Law of energy conversion Y) Faraday’s law and Lenz’s law Z) Maxwell’s equations
W: W) Law of continuity
X: X) Law of energy conversion
Y: Y) Faraday’s law and Lenz’s law
Z: Z) Maxwell’s equations
Answer: W) W) Law of continuity
Human pregnancy tests detect levels of which of the following hormones? W) Estrogen X) Progesterone Y) Chorionic gonadotropin Z) Luteinizing hormone
W: W) Estrogen
X: X) Progesterone
Y: Y) Chorionic gonadotropin
Z: Z) Luteinizing hormone
Answer: Y) Y) Chorionic gonadotropin
Which main class of antibodies is found in body secretions, such as saliva, tears, and sweat?
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What region on the edge of the solar system contains masses of ice and icy rock and is believed to be the source of short period comets?
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Put the following four ocean floor features and zones in the order you are likely to encounter them as you sail from the coast of North Carolina toward Bermuda: 1) continental slope; 2) open ocean; 3) intertidal zone; 4) neritic zone.
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Correct Order:
Which of the following types of force occurs between two parallel wires carrying currents in the same direction? W) No force X) Repulsive Y) Attractive Z) Sinusoidal
W: W) No force
X: X) Repulsive
Y: Y) Attractive
Z: Z) Sinusoidal
Answer: Y) Y) Attractive
Imagine evenly spaced radial lines emanating from a point source that represents the Earth. If 9 force lines pass through a plane x meters from the source, how many force lines pass through a plane of the same size 3x meters away? W) 1 X) 3 Y) 4.5 Z) 9
W: W) 1
X: X) 3
Y: Y) 4.5
Z: Z) 9
Answer: W) W) 1
A hula hoop with radius of 18 inches is cut into 12 equal pieces. Which of the following is the arc length in inches of each piece? W) \(3\pi\) X) \(9\pi\) Y) \(18\pi\) Z) \(36\pi\)
W: W) \(3\pi\)
X: X) \(9\pi\)
Y: Y) \(18\pi\)
Z: Z) \(36\pi\)
Answer: W) W) \(3\pi\)
How many positive integer factors does 120 have?
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At which of the following locations in the human body does the Krebs cycle occur? W) Ribosome X) Mitochondrial matrix Y) Cytosol Z) Phospholipid bilayer
W: W) Ribosome
X: X) Mitochondrial matrix
Y: Y) Cytosol
Z: Z) Phospholipid bilayer
Answer: X) X) Mitochondrial matrix
When using a psychrometer, at which of the following points is relative humidity 100%? W) When the wet bulb and dry bulb thermometers give equivalent readings X) When the wet bulb thermometer reading is higher than the dry bulb thermometer Y) When the wet bulb thermometer reading is lower than the dry bulb thermometer Z) When the wet bulb and dry bulb thermometers give a zero reading
W: W) When the wet bulb and dry bulb thermometers give equivalent readings
X: X) When the wet bulb thermometer reading is higher than the dry bulb thermometer
Y: Y) When the wet bulb thermometer reading is lower than the dry bulb thermometer
Z: Z) When the wet bulb and dry bulb thermometers give a zero reading
Answer: W) W) When the wet bulb and dry bulb thermometers give equivalent readings
In a fast nuclear reactor, why would coolant other than water be needed? W) Water has poor thermal properties X) Water absorbs neutrons too readily Y) Water slows fast neutrons down Z) Water cannot be used with the fast nuclear turbines
W: W) Water has poor thermal properties
X: X) Water absorbs neutrons too readily
Y: Y) Water slows fast neutrons down
Z: Z) Water cannot be used with the fast nuclear turbines
Answer: Y) Y) Water slows fast neutrons down
In recent years, the Pentagon has been trying to kick-start a new biofuel industry. The Air Force has already approved F-15 fighters, F-16 fighters, and C-17 transport planes to use 50% biofuel. What is the name of the plant that will be used to produce this jet biofuel?
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Which of the following amino acids is NOT made by the human body? W) Alanine X) Asparagine Y) Cysteine Z) Phenylalanine
W: W) Alanine
X: X) Asparagine
Y: Y) Cysteine
Z: Z) Phenylalanine
Answer: Z) Z) Phenylalanine
During post-transcriptional processing, what nitrogenous base is added to the 3′ end of the new RNA strand?
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The presence of which of the following compounds helps stabilize the pH of the ocean? W) Calcium carbonate X) Calcium chloride Y) Sodium chloride Z) Magnesium chloride
W: W) Calcium carbonate
X: X) Calcium chloride
Y: Y) Sodium chloride
Z: Z) Magnesium chloride
Answer: W) W) Calcium carbonate
Which of the following rocks would be the best choice for use as a building material, considering its resistance to chemical weathering? W) Limestone X) Pyrite Y) Granite Z) Shale
W: W) Limestone
X: X) Pyrite
Y: Y) Granite
Z: Z) Shale
Answer: Y) Y) Granite
Which of the following does NOT affect the pressure of an incompressible fluid in a container at a specific point? W) The depth of the point in the fluid X) The width of the container at the point Y) The density of the fluid Z) The force of gravity
W: W) The depth of the point in the fluid
X: X) The width of the container at the point
Y: Y) The density of the fluid
Z: Z) The force of gravity
Answer: X) X) The width of the container at the point
Calculate the gravitational acceleration to the nearest whole number of meters per second squared on the surface of a small planet with a mass of \(2\times10^{23}\) kg and a radius of 2000 km, given \(G=6.7\times10^{-11}\) m³/(kg·s²).
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What is the standard form of the equation of the circle with center \((-1,0)\) and radius 4?
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If you travel from your house 15 miles due east, return, then proceed to travel 15 miles due west and return, what are your average speed and the magnitude of your average velocity in miles per hour, if your travels occurred over a 6-hour period?
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Which of the following terms describes the relationship between L-ascorbic acid and D-ascorbic acid? W) Diastereomers X) Constitutional isomers Y) Enantiomers Z) Epimers
W: W) Diastereomers
X: X) Constitutional isomers
Y: Y) Enantiomers
Z: Z) Epimers
Answer: Y) Y) Enantiomers
Which of the following describes the chemical ability of a plant to prevent seeds of another species from germinating? W) Allelopathy X) Oligotrophy Y) Autophagy Z) Autotrophy
W: W) Allelopathy
X: X) Oligotrophy
Y: Y) Autophagy
Z: Z) Autotrophy
Answer: W) W) Allelopathy
How many real numbers \(b\) are there such that the equation \(3^x + 3^{-x} = b\) has a unique real solution \(x\)? W) There are no such values of \(b\) X) There is exactly one such value of \(b\) Y) There are exactly two such values of \(b\) Z) There are infinitely many such values of \(b\)
W: W) There are no such values of \(b\)
X: X) There is exactly one such value of \(b\)
Y: Y) There are exactly two such values of \(b\)
Z: Z) There are infinitely many such values of \(b\)
Answer: X) X) There is exactly one such value of \(b\)
Given \(a\) is a fixed real number that is greater than one, how many real numbers \(b\) are there such that the equation \(a^x + a^{-x} = b\) has a unique real solution \(x\)? W) There are no such values of \(b\) X) There is exactly one such value of \(b\) Y) There are infinitely many such values of \(b\) Z) The number of such values of \(b\) depends on the value of \(a\)
W: W) There are no such values of \(b\)
X: X) There is exactly one such value of \(b\)
Y: Y) There are infinitely many such values of \(b\)
Z: Z) The number of such values of \(b\) depends on the value of \(a\)
Answer: Y) Y) There are infinitely many such values of \(b\)
Polyp and medusa are two stages in the life cycle of which of the following? W) Nematocysts X) Anthozoa Y) Cnidarians Z) Ganglia
W: W) Nematocysts
X: X) Anthozoa
Y: Y) Cnidarians
Z: Z) Ganglia
Answer: Y) Y) Cnidarians
In Alzheimer’s disease, which of the following brain regions shows the first signs of protein aggregation? W) Central amygdala X) Mediolateral frontal lobe Y) Ventral lateral hypothalamus Z) CA1 of the hippocampus
W: W) Central amygdala
X: X) Mediolateral frontal lobe
Y: Y) Ventral lateral hypothalamus
Z: Z) CA1 of the hippocampus
Answer: Z) Z) CA1 of the hippocampus