LIFE SCIENCE
What human organ system is responsible for transporting blood throughout the body?
CARDIOVASCULAR
Mars has solid ice at its polar regions. Because of its low surface pressure, when the ice caps warm up, what type of phase change does the ice undergo?
SUBLIMATION
Rounded to the nearest whole number, what is 105 divided by 9?
12
Scientists at Jefferson Lab are studying plants with PET imaging. What does PET stand for?
POSITRON EMISSION TOMOGRAPHY
Laser A has a wavelength of 400 nm, and laser B has a wavelength of 800 nm. Which of the following is NOT true? W) Light from laser A is blue, and light from laser B is near infrared; X) Photons from laser A have half the energy of those from laser B; Y) Light from laser A has twice the frequency of laser B; Z) Light from lasers A and B travel at the same speed in vacuum.
X) PHOTONS FROM LASER A HAVE HALF THE ENERGY OF THOSE FROM LASER B
Keratin and hemoglobin are both examples of which macromolecules? W) Carbohydrates; X) Nucleic acids; Y) Proteins; Z) Lipids.
Y) PROTEINS
What type of volcano is typically broad with shallow slopes and produces effusive eruptions?
SHIELD
Rachel is 5 feet 3 inches tall. Her friend Andy is 70 inches tall. In inches, how much taller is Andy than Rachel?
7
Researchers at Los Alamos National Lab are building long‐range radio networks for real‐time sensors. Which of the following could be the wavelength of a radio wave? W) 10 nanometers; X) 1 micron; Y) 100 microns; Z) 10 meters.
Z) 10 METERS
Andrew has a scale, which he calibrates using a one‐kilogram mass. Which of the following sets of measurements in kilograms reflects the most accurate calibration? W) 2.1, 2.1, 2.0; X) 1.5, 0.5, 1.0; Y) 1.7, 0.8, 1.3; Z) 1.7, 1.3, 1.0.
X) 1.5, 0.5, 1.0
The binomial name for an organism refers to what two levels of taxonomy?
GENUS AND SPECIES
Elliptical, irregular, and spiral are classifications that astronomers use to describe what?
GALAXIES
What are the mean and median, respectively, of the following list of six numbers: 9, 8, 2, 8, 5, 4?
6 AND 6.5
Scientists at Lawrence Berkeley National Lab have developed the PhyloChip, which detects pathogenic microbial contamination in drinking water by hybridization on a microarray. What macromolecules does the PhyloChip detect?
DNA
What is the term for the force that is necessary for keeping an object in uniform circular motion?
CENTRIPETAL
Which of the following best describes the role of most white blood cells? W) Immune response; X) Clotting; Y) Gas transport; Z) Osmotic buffering
W) IMMUNE RESPONSE
What two planets in the solar system have rotational periods of approximately 24 hours?
EARTH AND MARS
What is the average of the 3 numbers 7, 9, and 17?
11
Sandia National Lab researchers have developed a chip that models the junction at which two neurons communicate with one another. What is the name of this junction?
SYNAPSE
You drop a 100-gram ball from a height of 50 centimeters, and then you drop a 1-kilogram brick from a height of 2 meters. Just before each hit the ground, the brick had how many times the momentum of the ball?
20
You put two solutions with different concentrations of salt in a container, separated by a semi-permeable membrane. Later, you observe that the water level on one side of the container is higher than the other. What effect is responsible for this?
OSMOSIS
Which of the following would be most useful for determining the age of an asteroid? W) Composition; X) Degree of differentiation; Y) Concentration of radioactive elements; Z) Temperature.
Y) CONCENTRATION OF RADIOACTIVE ELEMENTS
A rhombus has diagonals of length 13 and 22. What is its area?
143
Researchers at SLAC National Accelerator Lab are improving the intensity of their Linac Coherent Light Source, or LCLS, laser, that they currently use to determine the structures of biological molecules and crystals. This laser operates in what region of the electromagnetic spectrum?
X-RAY
What is the term for a device that converts radiant energy directly into electrical energy?
PHOTOVOLTAIC